I have been noticing that when I am looking at darker solid colors they sometimes appear to have a slight gradient to them. I know this is an AMOLED panel, so when a true black pixel is displayed, that AMOLED display pixel should appear completely black (as in, NO light is emitted). This is one advantage to AMOLED panels. So even at 100% display brightness, a true black screen should appear OFF.
So I created some test images in Photoshop to see to see how different shades of black and near black appear on the screen (I tested tones from 100% black to dark gray).
From my test, I found that my tablet does in fact turn completely OFF when 100% black is displayed. BUT my panel actually appears to have a slight backlight bleeding problem (Edit: Mura Effect).This is only noticeable when I am viewing colors that are very dark (but not completely black) and consistent. Also, It it's only visible in pretty dark rooms. I am not sure if I am going to return/exchange my tablet out yet.
I thought I would share my process for others to try to see if this is a common problem first...
Here is a Dropbox link to the files I made to test the problem:
https://www.dropbox.com/sh/wtfuazfn7i7z09o/AABvbRuA7-MUx_tF7xmmGSfAa
Method:
1: Open link up in the Dropbox app on your tablet (file sizes are full screen). Or feel free to download the files to your tablet and view them in the gallery app.
2. Turn screen brightness to 100%.
3. Make sure you're in a DARK room.
3. View files on your tablet at full screen.
Image 1 should appear 100% black (your screen should appear OFF). Image 1 is NOT going to be the image that will make Mura noticeable. Image 2, 3, 4 and 5 should start to appear slightly lighter as you scroll through the images. Watch out for inconsistent shade gradients like you see on my examples below (this is what tells you if you have Mura effect problems).
Here are what my results unfortunately look like. As you can see, image 1 does appear completely black (don't mind the reflections in the pictures). But the effect is pretty obvious on images 2 and 3
What are your results?
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well first of all seeing my screen on full bright but appearing to look off was pretty cool. also on mine i did not have a bleeding problem and they all seemed to have a solid difference with nothing visible to my eye.
i have the 10.5 and had to put in portrait mode to gett full screen.
thanks
Well technically your super amoled panel cannot have backlight bleed because there is no backlight. What you are seeing is referred to as a mura effect and should not be happening with this advanced of a panel. It has been confirmed that some of the 8.4 units have defective screens. On my 10.5 unit all dark colors look solid with no mura effect at all. Here is one of your sample images on my screen. Of course if you view this on your tablet you may see the mura effect. View it on your PC.
No 'bleeding' here either.
I have a T700 (8.4) and have just testet you pictures, - mine also have some Mura Effect, however not as dominant as the ones you posted here. I can see on this link here that it unfortunately seams to be an issue on most of the units -> http://forum.xda-developers.com/galaxy-tab-s/help/users-feedback-want-to-buy-8-4-t2834969
---------- Post added at 06:50 PM ---------- Previous post was at 06:37 PM ----------
ThE_SoUrCe said:
No 'bleeding' here either.
Click to expand...
Click to collapse
Which version do you have?
AZBoomer said:
1: Open link up in the Dropbox app on your tablet your tablet and view them in the gallery app.
2. Turn screen brightness to 100%.
3. Make sure you're in a DARK room.
3. View files on your tablet at full screen.
Click to expand...
Click to collapse
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?
BarryH_GEG said:
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?
Click to expand...
Click to collapse
This is XDA. What did you expect?
Omg thats terrible
rockbastard said:
I have a T700 (8.4) and have just testet you pictures, - mine also have some Mura Effect, however not as dominant as the ones you posted here. I can see on this link here that it unfortunately seams to be an issue on most of the units -> http://forum.xda-developers.com/galaxy-tab-s/help/users-feedback-want-to-buy-8-4-t2834969
---------- Post added at 06:50 PM ---------- Previous post was at 06:37 PM ----------
Which version do you have?
Click to expand...
Click to collapse
T705. I noticed 3 green dots though.
I do not notice anyyhing like that on my 8.4.
I would get an exchange if you still can. Never know what the ramifications in the future to the display may be.
BarryH_GEG said:
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?
Click to expand...
Click to collapse
Exactly this. Some people have waayyyy too much time on their hands, I don't know how they manage to live their lives if this sort of nothingness is enough to trouble them. What exactly are you intending to do with this tablet, color time a Hollywood movie?
Must be a real killer for some people every time they have to change channel on their tv, I have to wait 0.4 seconds for the next station to come on. It's terrible.
Nobody can see this with their naked eyes.
Everyone that posts about this use ultra high iso pictures to show it.
Its a non problem.
DAvid_B said:
Nobody can see this with their naked eyes.
Everyone that posts about this use ultra high iso pictures to show it.
Its a non problem.
Click to expand...
Click to collapse
It actually is pretty noticeable even at 25% brightness when you're just using the tablet normally. Now it doesn't show up everywhere. You can see it pretty easily in the notification shade and in the settings menu. Or when you open up Chrome with no tabs, that background is not perfectly solid and I notice it every time. You can also see it on darker full screen photos too.
Still not sure if I care enough to exchange it. Although, I am very picky about image color representation as I am a photographer and this panel on AMOLED Photo mode matches my calibrated monitors pretty well, but that dark gradient just bothers me sometimes!
AZBoomer said:
It actually is pretty noticeable even at 25% brightness when you're just using the tablet normally. Now it doesn't show up everywhere. You can see it pretty easily in the notification shade and in the settings menu. Or when you open up Chrome with no tabs, that background is not perfectly solid and I notice it every time. You can also see it on darker full screen photos too.
Still not sure if I care enough to exchange it. Although, I am very picky about image color representation as I am a photographer and this panel on AMOLED Photo mode matches my calibrated monitors pretty well, but that dark gradient just bothers me sometimes!
Click to expand...
Click to collapse
Is yours also the 8.4 version?
3 I work with all have the 8.4 (T700) version myself included. All have visible Mura effect at normal settings. Samsung run an ad campaign here in Denmark, where you can buy and try for 30 days one did an exchange - but same result, visible Mura effect - however under normal working conditions is not a big issue.. Bur as a still photo viewer I understand your point.
Mine has dark mura at top right corner with dark banding at the lower screen
rockbastard said:
Is yours also the 8.4 version?
3 I work with all have the 8.4 (T700) version myself included. All have visible Mura effect at normal settings. Samsung run an ad campaign here in Denmark, where you can buy and try for 30 days one did an exchange - but same result, visible Mura effect - however under normal working conditions is not a big issue.. Bur as a still photo viewer I understand your point.
Click to expand...
Click to collapse
Yes, I have the 8.4 inch version. If it really is that common, I may just keep it. It does bother me, but overall I am happy with the tablet and am happy with the battery life. Not sure I want to chance getting a new one it it not being any better...We'll see though.
BarryH_GEG said:
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?
Click to expand...
Click to collapse
These are the conditions to make it easily noticeable. I on my hand did notice the issue on regular use of the tablet:
- First noticed it while reading an e-book, the tint of the background was not homogenous.
- Then I noticed it while browsing the tablet options: "huh, the gradient on the background is not regular.. oh wait, it's not supposed to be a gradient".
- And now I notice it while playing movies, when the scenes are dark.
100% brightness is not a requirement for it to be visible. Actually, minimal brightness while in the darkness works very well at revealing the issue.
However, it is extremely unlikely that someone ever notice the issue while using the tab in daylight. In my case, I use it mainly in the darkness, and often get to see it.
Damn you OP, mine got it too...anyway, it isn't really noticeable with most content so I just keep mine since it seems very common anyway.
That's defective. You guys should not be satisfied at keeping it like that. I have no such effect. I'd take it back if it were mine. I didn't pay $600 for a tablet to have a defect like that
Inkedadrenaline said:
That's defective. You guys should not be satisfied at keeping it like that. I have no such effect. I'd take it back if it were mine. I didn't pay $600 for a tablet to have a defect like that
Click to expand...
Click to collapse
I don't know if it's defective, but if it is it's a defect that affects most AMOLED screens and all of the Tab S 8.4 I could test it for (3 of them). My Galaxy SII is affected as well, so is my PS Vita. And my friend's. And his Note II.
I returned my unit twice, once through the online store and once through the physical one, all of them suffered from Mura effects. Either I am utterly unlucky, or a large amount of the tabs are affected.
Related
Hello everyone. Right below the notification bar, there is a tinted area going sideways. This appeared about a week ago. Only the display is affected, this doesn't appear in screen shots. When I get the device in landscape mode, the tinted area stays physically over the same pixels, so it's now upside down. I took pics of the phone by another phone. The quality is not so good but sharp eyes will notice it. Anyone had the same problem? Any ideas what should I do about this?
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The first two are screenshots and in the last pic you can see bottom half of the username box is a darker tone.
Dr Fretless said:
Hello everyone. Right below the notification bar, there is a tinted area going sideways. This appeared about a week ago. Only the display is affected, this doesn't appear in screen shots. When I get the device in landscape mode, the tinted area stays physically over the same pixels, so it's now upside down. I took pics of the phone by another phone. The quality is not so good but sharp eyes will notice it. Anyone had the same problem? Any ideas what should I do about this?
The first two are screenshots and in the last pic you can see bottom half of the username box is a darker tone.
Click to expand...
Click to collapse
Hi! It's probably screen burn in, common with amoled displays, I had it quite bad on my old phone. Caused by spending a lot of time on the messaging app, in which the part below the notification bar was grey, and the rest white. Brighter sections of the screen age faster.
I assume you use your phone in portrait mode a majority of the time?
csmiler said:
Hi! It's probably screen burn in, common with amoled displays, I had it quite bad on my old phone. Caused by spending a lot of time on the messaging app, in which the part below the notification bar was grey, and the rest white. Brighter sections of the screen age faster.
I assume you use your phone in portrait mode a majority of the time?
Click to expand...
Click to collapse
I spend much time on tapatalk and yes in portrait mode. After reading your response my eye caught the bright blue bar of tapatalk 2s stock black theme. Probably that bar caused this because the screen is so dark with this theme but that blue bar.
But this shouldn't be taken as user error right? I think I should get a replacement screen as this phone has been in my hands for just 6 months. I'm still in warranty period.
What do you think?
Dr Fretless said:
I spend much time on tapatalk and yes in portrait mode. After reading your response my eye caught the bright blue bar of tapatalk 2s stock black theme. Probably that bar caused this because the screen is so dark with this theme but that blue bar.
But this shouldn't be taken as user error right? I think I should get a replacement screen as this phone has been in my hands for just 6 months. I'm still in warranty period.
What do you think?
Click to expand...
Click to collapse
It's not an error, amoled screens age this way, it's quite normal.
I understand it's quite frustrating, once you see it, you can't unsee it.
Especially in just 6 months of use, I noticed this on my old Galaxy S after a year, and realized it was because I was on an AOSP rom for a few months which had white messaging with a grey bar.
They probably won't replace the screen, either saying there's nothing wrong with the display.
No loss trying, they might be nice enough to give you a new display! :good:
csmiler said:
It's not an error, amoled screens age this way, it's quite normal.
I understand it's quite frustrating, once you see it, you can't unsee it.
Especially in just 6 months of use, I noticed this on my old Galaxy S after a year, and realized it was because I was on an AOSP rom for a few months which had white messaging with a grey bar.
They probably won't replace the screen, either saying there's nothing wrong with the display.
No loss trying, they might be nice enough to give you a new display! :good:
Click to expand...
Click to collapse
I see... But one expect at least a year to talk about aging. It's no big deal for now but if it gets darker I don't think I'd put up with it.
Too bad I love this thing a lot but guess I'll have to avoid amoled screens for my next device...
Dr Fretless said:
I see... But one expect at least a year to talk about aging. It's no big deal for now but if it gets darker I don't think I'd put up with it.
Too bad I love this thing a lot but guess I'll have to avoid amoled screens for my next device...
Click to expand...
Click to collapse
Agreed, 6 months doesn't speak much off the quality.
I considered it too, but Samsung devices always have Amoled, and I like Samsung hardware, even though a lot of their devices are faulty, including mine.
The LCD is one of the main reasons I like HTC hardware, better color tone.
Dr Fretless said:
I see... But one expect at least a year to talk about aging. It's no big deal for now but if it gets darker I don't think I'd put up with it.
Too bad I love this thing a lot but guess I'll have to avoid amoled screens for my next device...
Click to expand...
Click to collapse
Samsung Korea replaces panels for free if they can see a burn in. People there get quite worked up about this issue on amoled displays so Samsung does replace them quietly. Heck there's even people who leave the screen on blue (apparently the best colour for getting burn ins) and get them replaced on purpose. Not sure about anywhere else though. It's worth a try visiting a Samsung service centre if you can find one near you.
xcly said:
Samsung Korea replaces panels for free if they can see a burn in. People there get quite worked up about this issue on amoled displays so Samsung does replace them quietly. Heck there's even people who leave the screen on blue (apparently the best colour for getting burn ins) and get them replaced on purpose. Not sure about anywhere else though. It's worth a try visiting a Samsung service centre if you can find one near you.
Click to expand...
Click to collapse
Hey, that's good news. I'll try talking to a center when I get time. Thank you very much.
tip for you guys. this issue with amoled screen is a common issue. you can check you note 2's screen burn by doing this test, open the Phone app and type *#0*#, check colors Red, Green and Blue (blue is most commonly affected). Note 2 is my 3rd smartphone with AMOLED screen for me. the first 2 phones got screenburned big time, but I took extra care of this one. it has a little screenburn in the notification area but you can hardly tell the difference even when testing it with the test I mentioned above.
here's 2 things to avoid: exposing screen to direct sunlight, keeping screen to full brightness al the time. better luck with next amoled screen.
ovidiugr said:
tip for you guys. this issue with amoled screen is a common issue. you can check you note 2's screen burn by doing this test, open the Phone app and type *#0*#, check colors Red, Green and Blue (blue is most commonly affected). Note 2 is my 3rd smartphone with AMOLED screen for me. the first 2 phones got screenburned big time, but I took extra care of this one. it has a little screenburn in the notification area but you can hardly tell the difference even when testing it with the test I mentioned above.
here's 2 things to avoid: exposing screen to direct sunlight, keeping screen to full brightness al the time. better luck with next amoled screen.
Click to expand...
Click to collapse
Thanks for the tip. Good to know that there's a way to avoid this. I use this phone as a navigator when driving so it must have gotten a great deal of direct sunlight. I'll keep the flip cover shut when not using the maps now.
Thank you all guys.
I just received my LG G Pad 8.3 from Newegg last night. So far, it's been a great experience. Looks good. I bought a Tab 3 8.0 during a sale at Staples last week, but when I saw the Cyber Monday deal on new egg, I jumped on it.
My question is this : After running a few processor oriented programs ( Antutu stability, etc ) , when I open up a browser tab ( white background or something similar ) I notice a yellow thin line (not a single line, however.. its a little thick) at the top end of the screen ( towards the front camera ). It is much more visible when I use the tablet in landscape mode ( when the screen rotates - and the tint shows up on the left hand side of the tablet ).
Is this normal? I can feel the heat under the screen (it is warm under the tint area) but, the tint is visible and its noticeably yellow. I do not see the blue line as some of you have mentioned on the forums.
I am not sure if this is much of an issue, to require a return. But, I just want to make sure I don't have a tablet which has a screen issue. I noticed it last night while using it after an hour of use, so I think it's visible for the most part (because someone else did not mention it to me )
Does anybody else have this issue ?
Also, compared to the Tab 3 screen, the screen has almost a 30% decrease in brightness. E.g The tab 3 at 50% is equal to the screen brightness of the LG pad at 80%. Lastly, the screen does seem to be pretty warm (color K) in comparison to the Tab 3. I don't know if that is necessarily a bad thing, but I did notice that while doing a side by side comparison of the two tablets.
Any info on the above issue would be greatly appreciated :laugh:
pic
i just got my today at the newegg cyber Monday deal and i don't have that problem. Can you upload a picture
snaketooth2007 said:
i just got my today at the newegg cyber Monday deal and i don't have that problem. Can you upload a picture
Click to expand...
Click to collapse
Unfortunately, due to my account being new, xda does not allow me to upload links or images. I've searched around the internet and I've read a couple of posts where people say that once the adhesive or "some other material " eases out on the screen, the tint slowly goes away (possibly a week or so) It is noticeably yellowish (color wise) in comparison to my Galaxy Tab 3. I'll keep on using it for the next week or so and see if the problem persists or declines.
I'll post pictures once my account reaches the link-free level. :good:
dev87 said:
Unfortunately, due to my account being new, xda does not allow me to upload links or images. I've searched around the internet and I've read a couple of posts where people say that once the adhesive or "some other material " eases out on the screen, the tint slowly goes away (possibly a week or so) It is noticeably yellowish (color wise) in comparison to my Galaxy Tab 3. I'll keep on using it for the next week or so and see if the problem persists or declines.
I'll post pictures once my account reaches the link-free level. :good:
Click to expand...
Click to collapse
I don't see it either.
RMA'ed the device through NewEgg for a replacement. The screen looked very yellowish in comparison to some review videos (posted on youtube). In addition, I wasn't able to ignore the yellow line on the screen while viewing it on white backgrounds.
I'm disappointed with the brightness and color reproduction compared to my Tab 3 8.0, but since I paid a fair price for it (249),I'm keeping the device. I'm hoping the replacement device will be better than the first unit I received through NewEgg. I've read several varying posts on the screen. It seems to me that there are units with an overall yellowish tint on them, whereas others do not have this issue. My desktop monitor (HP zr24w) has pretty good color reproduction, and in comparing my unit to the unit being reviewed on screen, my device had a much much warmer screen overall.
It was very similar to running Flux on my desktop at 3800k. None of the reviews not mention anything about the screen being so warm. Once I receive a replacement, I'll update the thread. If the problem is isolated to certain devices, I'd advise a replacement or return.
Looks like I have the same problem with my G Pad. I have a yellow patch at the top left of the screen and bottom right also.
Seems to come and go depending on usage, so I assume it's heat related?
Sent from my LG-V500 using Tapatalk
I don't have a problem with patches, but the colour accuracy of the display is terrible. Here is my G Pad at full brightness vs my full gamut RGB backlit IPS display at 80% brightness....
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The photo makes things look vastly worse than the way the human eye perceives the difference, but there is no denying that the cast is significant.
---------- Post added at 11:18 AM ---------- Previous post was at 11:17 AM ----------
I don't have a problem with patches, but the colour accuracy of the display is terrible. Here is my G Pad at full brightness vs my full gamut RGB backlit IPS display at 80% brightness....
The photo makes things look vastly worse than the way the human eye perceives the difference, but there is no denying that the cast is significant.
I only had a quick glance at this thread but I too get a yellow tint in the top part of the screen when the tab gets a bit warmer.
Within ten minutes of watching full hd mkv the brightness also throttles down.
pkoper said:
I only had a quick glance at this thread but I too get a yellow tint in the top part of the screen when the tab gets a bit warmer.
Within ten minutes of watching full hd mkv the brightness also throttles down.
Click to expand...
Click to collapse
Appears to be quite a common issue. Returned my 4th lg pad today for this reason.
Will be gunning for the sammy 8.4...
Great idea by LG, very poor execution
4th one?????
That's just crazy and a shame because else the tab is really nice.
Ok...
I think the "yellow tint" may have something to do with the adhesive. Quite sure the Display is glued to the digitizer. I had may tab on and stressed for a few hours. You can see the discoloration on almost any background. Even black, just couldn't capture it in a photo.
Has anyone had the tint go away after some time?
This is the same tab after sitting in the fridge for around 5 minutes...
I would hence say it is a hardware issue and not software or kernel related as some suggest.
dupe...
pkoper said:
dupe...
Click to expand...
Click to collapse
In your experience, does it go away with time?
I really loved the tab save for that bit...But if it stays like that forever, well...
It definately seems temperature related. As soon as the tab gets warmer the blotch/tint appears. When the tab cools down it goes away.
I don't know if it is some residual adhesive that has not dried/hardened out during manufacturing.
I still have a few days where I can just give it back, so I will be looking into it.
pkoper said:
It definately seems temperature related. As soon as the tab gets warmer the blotch/tint appears. When the tab cools down it goes away.
I don't know if it is some residual adhesive that has not dried/hardened out during manufacturing.
I still have a few days where I can just give it back, so I will be looking into it.
Click to expand...
Click to collapse
Good luck mate
Such a beautiful device giving us so many problems...4 LGs. I don't think I have it in me to go for a 5th one..
Such a nice tab ruined by the screen. Never ever LG again. Unfortunately bought of private seller who didn't keep receipt (new and sealed) and lg doesn't stand behind their product.
From my experience: HTC - yes, Apple - yes, Samsung - yes, LG - warranty not transferable.
Avoid like a plague.
michal_alton said:
Such a nice tab ruined by the screen. Never ever LG again. Unfortunately bought of private seller who didn't keep receipt (new and sealed) and lg doesn't stand behind their product.
From my experience: HTC - yes, Apple - yes, Samsung - yes, LG - warranty not transferable.
Avoid like a plague.
Click to expand...
Click to collapse
There is somebody working on that fix for your version now. Probably know something more in a week or so.
That would be nice but still won't be buying LG product again if they don't change their policy of transferring warranty to another end - user as other companies does.
As it looks like a batch of defective units they should respect warranty repair of product that has just been introduced and is well within 2 years warranty
evak2979 said:
Good luck mate
Such a beautiful device giving us so many problems...4 LGs. I don't think I have it in me to go for a 5th one..
Click to expand...
Click to collapse
Mine also has that line. Its not as noticeable as your picture. I did return another one due to the same line. The previous tab had once turned on. It didn't have to be running foe a long time.
Sent from my SCH-I605 using xda app-developers app
So I just got a new Galaxy Note 10.1 2014 from amazon, the first one they sent had dead pixels on it so I sent it back for a replacement. My second one came and things are looking pretty good except I've noticed the screen just doesn't look very crisp/sharp and icons/text look very pixelated when compared to my 3rd generation iPad or my new Nexus 5's screen. I took screen shots (of the lock screen, home screen, settings, etc..) on the note 10.1 and loaded it up on the iPad and the same screen shots look much sharper/better than on the iPad's screen. I believe the first one I got (with the dead pixels) had about the same pixelation/quality. It is very apparent when I look at the battery icon in the corner, it is appears very jagged and pixelated.
Before I go for another replacement, I'm wondering if the Galaxy Note 10.1 2014 is suppose to look like this or if both units I got just had issues with the screens. For a tablet with 2560x1600 resolution, I would have thought the picture quality would be much better (on par with the iPad or my nexus 5), but when I compare the screen quality of the note 10.1's to my iPad or my Nexus 5 it doesn't even come close.
Edit: Added photos with phone's camera (not great due to how poorly cameras generally capture lcd screens, but I think it shows what I'm talking about).
https://www.dropbox.com/s/1yv8lp4tj9l6ftx/Galaxy%20Note%20Screen.jpg
https://www.dropbox.com/s/z735p1n4swmzj7z/Galaxy%20Note%20Screen%20%282%29.jpg
https://www.dropbox.com/s/yk87yermiinnmj2/3rd%20gen%20iPad%20with%20Galaxy%20Note%20Screen%20Shot.jpg
Well, I figured out the issue, the Galaxy Note 10.1 2014 uses a PenTile RGBW screen. This causes me to basically see a checkerboard of pixels everywhere, it was more apparent with the green battery indicator icon. Not sure why they would use this technology, but I guess I'll have to look into a different tablet. Its a shame because I was quite looking forward to the Note 10.1.
I wish my eyes were good enough to see the individual pixels on the note 2014 display.
To me the battery icon looks solid green with no pixellation
You can see it if you out your eyes on the screen
Sent from my SM-P600 using XDA Premium 4 mobile app
Ok, I see the issue now, I decided to read up about it some more, here is a bit of a technical blog post. A person was explaining an issue similar to mine with Pentile's technology and they replied, in rather in depth detail http://pentileblog.com/oled/pentile-and-sharp-eyesight/
And I would highly suggest not putting your faces so close to the screens, you people are talking about 3 inches away, which is crazy, I took a tape measure and my eyes were really straining/hurting at about 3-4 inches, would imagine that not to be healthy for the eyes. My "close" viewing distance (if I'm holding it or laying down) is about 8-14 inches. My normal viewing distance (if its on my lap or the table) is about 19-23 inches (I took a tape measure to attempt to get an accurate measurement). At both my "close" and "normal" viewing distance I can see the checkerboard pattern on most solid colors (largely depends on the color) areas like backgrounds, text, and icons quite clearly.
So this seems like it would only effect certain individuals (would like to apologize to daddydark as I thought the issue was more wide spread). This is quite a disappointment for me as I am in the market for a new tablet and I have been interested in the galaxy note line for quite some time (hardly anyone puts a decent active stylus on their tablets). The Galaxy Note 10.1 2014 seemed like a great choice with great specs, great listed resolution, reliable active stylus. Guess I'll have to look into a different product (the screen is just too distracting for me unfortunately).
But the screens amazing!!!
Sent from my SM-P600 using XDA Premium 4 mobile app
choji7 said:
Ok, I see the issue now, I decided to read up about it some more, here is a bit of a technical blog post. A person was explaining an issue similar to mine with Pentile's technology and they replied, in rather in depth detail http://pentileblog.com/oled/pentile-and-sharp-eyesight/
And I would highly suggest not putting your faces so close to the screens, you people are talking about 3 inches away, which is crazy, I took a tape measure and my eyes were really straining/hurting at about 3-4 inches, would imagine that not to be healthy for the eyes. My "close" viewing distance (if I'm holding it or laying down) is about 8-14 inches. My normal viewing distance (if its on my lap or the table) is about 19-23 inches (I took a tape measure to attempt to get an accurate measurement). At both my "close" and "normal" viewing distance I can see the checkerboard pattern on most solid colors (largely depends on the color) areas like backgrounds, text, and icons quite clearly.
So this seems like it would only effect certain individuals (would like to apologize to daddydark as I thought the issue was more wide spread). This is quite a disappointment for me as I am in the market for a new tablet and I have been interested in the galaxy note line for quite some time (hardly anyone puts a decent active stylus on their tablets). The Galaxy Note 10.1 2014 seemed like a great choice with great specs, great listed resolution, reliable active stylus. Guess I'll have to look into a different product (the screen is just too distracting for me unfortunately).
Click to expand...
Click to collapse
The problem is you can look at every tablet out there, and non have the same resolution with pen support. Sad but true.
There's nothing wrong the screen, you can only see the pixels if you look at distances your not suppose too, and I have a keen eye
Sent from my SM-P600 using XDA Premium 4 mobile app
skyline23 said:
The problem is you can look at every tablet out there, and non have the same resolution with pen support. Sad but true.
Click to expand...
Click to collapse
There is Toshiba eXcite Write
Thread Cleaned.... Please stay on topic without disrespecting other users... Thanks!
Apple troll Good luck. And Good riddance.
I can see the pixels
So, I went to a local best buy and we were both staring at the same screen (the sales rep an I), I asked him he could see the pixelation and he said he couldn't but I could, so oh well, at least he wasn't rude about it. After some research and looking at other options I will keep the tablet as it was exactly what I wanted and I will just buy like a Nexus 7 for recreational use (where I am most likely to notice the pixelation).
Since most people here really seem to be very rude or disrespectful about this topic, I would appreciate if people just stop posting in this thread (aka let it die), as it doesn't seem to be an issue with the product but with my eyes.
daddydark said:
I can see the pixels
Click to expand...
Click to collapse
This guy really confuses me. Wasn't he the one being disrespectful about you being able to see the pixels? Oh well. I think the opinion of a sales rep won't really be of any help because they will say anything to get you to buy something considering that they probably work on commission. I can see the pixels, but I learned to live with it because I use the GS3 which also has the same pentile technology.
choji7 said:
So, I went to a local best buy and we were both staring at the same screen (the sales rep an I), I asked him he could see the pixelation and he said he couldn't but I could, so oh well, at least he wasn't rude about it. After some research and looking at other options I will keep the tablet as it was exactly what I wanted and I will just buy like a Nexus 7 for recreational use (where I am most likely to notice the pixelation).
Since most people here really seem to be very rude or disrespectful about this topic, I would appreciate if people just stop posting in this thread (aka let it die), as it doesn't seem to be an issue with the product but with my eyes.
Click to expand...
Click to collapse
Good luck to you fella, with eyes that keen I hope you find a job in law enforcement or something for the better good of society. Anyone hoping to steal a march over you better not reply upon Samsung.
I went to best buy and the sales guy said he could see my retina in my left eye, I couldn't. Something must be wrong with my note 2014 edition.
choji7 said:
So, I went to a local best buy and we were both staring at the same screen (the sales rep an I), I asked him he could see the pixelation and he said he couldn't but I could, so oh well, at least he wasn't rude about it. After some research and looking at other options I will keep the tablet as it was exactly what I wanted and I will just buy like a Nexus 7 for recreational use (where I am most likely to notice the pixelation).
Since most people here really seem to be very rude or disrespectful about this topic, I would appreciate if people just stop posting in this thread (aka let it die), as it doesn't seem to be an issue with the product but with my eyes.
Click to expand...
Click to collapse
choji,
I have to get very close to see ANY pixilation. And I need a 6x magnifier to see it as well as the pictures you posted. But; I can't see near as well as I could 40 years ago either.
If you see enough to bother you from 12", then you have far better eyesight than most of us. There's nothing wrong with your eyes. That's the good news. The bad news is, you will be far more conscious of normal pixilation than others are. If I could have sight that good, I'd be willing to live with the pixilation on the icons.
Please don't read any rudeness or disrespect into my comments, none is intended.
If I may interject...
choji7 is specifically referring to the moire pattern visible on the green battery indicator on the shots of the samsung. But there is an explanation. And its not what he thinks.
The "live" battery indicator does have a crosshatch pattern. That is NOT a result of the pixel arrangement. It is the way the battery indicator was designed.
If you capture the screen, which he did in order to display it on an iPad, the Note seems to take a much lower res capture than the actual screen resolution. You can see this yourself if you capture a launcher screen, then show it in the gallery and then switch back to the live launcher. If you switch back and forth between the launcher and the gallery, you can't help but see that the capture is low res and lossy. The edges of icons look smooth on the launcher, but you will see edge pixels on the capture AND, most importantly, the battery indicator will magically be SOLID in the capture. So of course, if he displays the capture on the iPad, it will not show the pattern in the battery indicator as the capture eliminated it. If you look at the same capture on the Note, the battery indicator looks identical to the way it looks on the iPad. Its especially apparent if you enlarge the capture to show the battery indicator. It becomes a solid patch of green.
Mystery solved. Nothing wrong with the Note 10.1 screen.
My question is why is the default screen capture on the Note saving a very lossy, low-res image and how can you change it to lossless? I don't see an option to change that. The screen captures it made were tiny files of 3.7 MB PNG format. It should have been a much larger file at 2560x1600.
jaytee23 said:
If I may interject...
choji7 is specifically referring to the moire pattern visible on the green battery indicator on the shots of the samsung. But there is an explanation. And its not what he thinks.
The "live" battery indicator does have a crosshatch pattern. That is NOT a result of the pixel arrangement. It is the way the battery indicator was designed.
If you capture the screen, which he did in order to display it on an iPad, the Note seems to take a much lower res capture than the actual screen resolution. You can see this yourself if you capture a launcher screen, then show it in the gallery and then switch back to the live launcher. If you switch back and forth between the launcher and the gallery, you can't help but see that the capture is low res and lossy. The edges of icons look smooth on the launcher, but you will see edge pixels on the capture AND, most importantly, the battery indicator will magically be SOLID in the capture. So of course, if he displays the capture on the iPad, it will not show the pattern in the battery indicator as the capture eliminated it. If you look at the same capture on the Note, the battery indicator looks identical to the way it looks on the iPad. Its especially apparent if you enlarge the capture to show the battery indicator. It becomes a solid patch of green.
Mystery solved. Nothing wrong with the Note 10.1 screen.
My question is why is the default screen capture on the Note saving a very lossy, low-res image and how can you change it to lossless? I don't see an option to change that. The screen captures it made were tiny files of 3.7 MB PNG format. It should have been a much larger file at 2560x1600.
Click to expand...
Click to collapse
That's actually not the design of the battery icon. Rather, the battery icon looks like that because of the technology of the screen used. Samsung decided to put a RGBW matrix screen rather than the traditional RGB matrix. You can see the difference in the review gsmarena did comparing the iPad Retina and the Note 10.1 2014. Here are the pics showing the matrices.
This is the traditional RGB matrix:
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This is the RGBW matrix in the Note 10.1:
choji7 said:
So, I went to a local best buy and we were both staring at the same screen (the sales rep an I), I asked him he could see the pixelation and he said he couldn't but I could, so oh well, at least he wasn't rude about it. After some research and looking at other options I will keep the tablet as it was exactly what I wanted and I will just buy like a Nexus 7 for recreational use (where I am most likely to notice the pixelation).
Since most people here really seem to be very rude or disrespectful about this topic, I would appreciate if people just stop posting in this thread (aka let it die), as it doesn't seem to be an issue with the product but with my eyes.
Click to expand...
Click to collapse
I agree that some people have been disrespectful to you, I think most (inc myself) just find it hard to believe you can see any pixels on a screen which has the best screen possible in the tablet market. If you see pixels on this then surely you would see them on every tablet since the all have lower resolution. Anyways glad you decided to keep it and I hope you enjoy it as much as I have....I love it.
-------------------
The only thing I noticed when I seen the the Note 10.1 on display at a local electronics store (Bare in mind it was very very heavily lit area) was these faint white/crystal matrix lines running all along the entire screen from top to bottom and the viewing angle had to be pretty precise to see it and had to focus on it a lot - LOL.
Basically imagine the RGBW matrix that notebooko just posted, identical to that however very faint. But it seems as though it was on the screen since the screen was on and thats when I seen it.
I havent been able to recreate it in the house but curious to what it is. Just a guess but maybe it could be some sort of filer for the RGBW display or something.
Hi, I've noticed that my screen seems to have a warmer color tone to it, along with an slight overall yellow tint. You can see it best on light gray colors. I also had an AT&T model for a few days (returned) and that phone had a cooler, overall blue tint to it. You could really see the difference with the phones side by side. I've talked to friends with a AT&T and a Verizon version, they said their screens have the cooler toned blue tint.
So what tint is your screen, if any?
I'm wondering, maybe Tmobile just calibrates their screens for the warmer look... or is there something wrong with mine? Thanks.
aimfire72 said:
Hi, I've noticed that my screen seems to have a warmer color tone to it, along with an slight overall yellow tint. You can see it best on light gray colors. I also had an AT&T model for a few days (returned) and that phone had a cooler, overall blue tint to it. You could really see the difference with the phones side by side. I've talked to friends with a AT&T and a Verizon version, they said their screens have the cooler toned blue tint.
So what tint is your screen, if any?
I'm wondering, maybe Tmobile just calibrates their screens for the warmer look... or is there something wrong with mine? Thanks.
Click to expand...
Click to collapse
Settings > Accessibility > Color Adjustment
turquoise circle over camera is the best setting for me.
YiZK said:
Settings > Accessibility > Color Adjustment
turquoise circle over camera is the best setting for me.
Click to expand...
Click to collapse
Yes, but what was the screen tone before you did that?
OK... no one here today? lol
So I just went to T-Mobile store to compare, side by side... The screens are their demo phones actually looked worse than mine, almost a green tone to them and not nearly as bright. One thing for sure, they did not have the blueish tint to them, was more of a green/yellow. I'm beginning to think that since every carrier seems to have messed around with the software so much, they probably also adjusted the screen calibrations as well. I'm going to check at the Verizon store and another T-Mobile just to verify
Mine is t-mobile and bright white.. The nexus 5 had the same issue, 2 different screen manufacturers one with a warmer almost yellow screen and the other blue cooler feel.. I've been lucky with both my nexus 5 and g3 both are bright white screens and no yellow. You could try swapping it and hope you get a better screen.
Why with every new phone release this topic comes up? We know every screen's not made the same, some is warm some are cool.
Sent from my LG-D851 using Tapatalk
shook187 said:
Why with every new phone release this topic comes up? We know every screen's not made the same, some is warm some are cool.
Sent from my LG-D851 using Tapatalk
Click to expand...
Click to collapse
Because when people pay $600+ for a new phone that's main feature is the screen, they want to make sure nothing is wrong with theirs.
Long story short, went to my T-Mobile store to compare to display models and possibly do an exchange. Compared side by side, trying out different stock wallpapers at 100% brightness. The two display models they had were also yellowish, but noticeably much more dim. Compared to an employee's phone, his was also yellowish and very dim. My phone looked good compared to all those!
Stopped by a 3rd party T-Mobile store on way home to see their display model. Not yellow at all, it had the cooler blue tone, but also much dimmer than my phone. Decided to go to the store where I originally purchased mine and compare to those... Both display models had the blueish tone, as well as the manager's phone - however, mine was still much brighter than all. So was going to exchange and we opened the new box... That phone was even more yellowish than mine and also much dimmer. Opened another one, just as bad! Those were the last two they had in stock, so they arranged for me to go to another store and try again.
Got to the other store, they got a new phone out for me - same yellowish tone and dimmer than mine. I didn't want to make them open every phone again, so I kept my original phone and left. The manager thinks they may have gotten an "off" batch maybe, and if that were the case, then every store in the area would have phones from this batch. He suggested that I come back in about a week when they get a new shipment, perhaps from a different batch, and try again.
So... out of 10 T-Mobile phones that I saw today:
- 4 had cooler blueish tone screens
- 6 had warmer yellowish tone screens
- My phone was brighter than all of them!
Not sure what to make of all this, lol... cannot believe the differences in the displays on this phone. And why is mine so freakin' bright?? lol... Is it a freak accident or did I maybe somehow get like a 2nd revision screen on my phone? Not sure... What do you all make of this?
I've noticed no tint on mine and it's plenty bright. I keep it at 60% and it looks great
bfranklin1986 said:
I've noticed no tint on mine and it's plenty bright. I keep it at 60% and it looks great
Click to expand...
Click to collapse
Mine is good and keep at 40 to extend battery just a bit. When rooted and I remove a lot of junk I will be ok for whole day.
I also noticed that (see my reply in "screen problem" thread).
http://forum.xda-developers.com/showpost.php?p=54262695&postcount=17
Open Google.com with Chrome (or stock browser) using desktop view to compare.
I used my Note 3 to compare (100% brightness).
The one has "reddish" tint seems to have more problem (dark screen, overly shaded fonts on standby screen) while "cool tint" one looks "normal". In addition, I found out cool tint one runs cool.
Nope no color tints
-Sent from my TMO LG G3 using Tapatalk
FYI, I found a corp store has both good and bad models
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DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!
mingkee said:
FYI, I found a corp store has both good and bad models
DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!
Click to expand...
Click to collapse
too bad you didnt have the same page up on both phones for an accurate comparison.AND, some people like warm tones more than cool ones..
mingkee said:
FYI, I found a corp store has both good and bad models
DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!
Click to expand...
Click to collapse
Excellent - thanks for that pic!
It's crazy how bad the differences are! There haven't been many reports of bad screens, but when there are, it's usually the T-Mobile version. No idea what's going on with their phones.
mingkee said:
FYI, I found a corp store has both good and bad models
DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!
Click to expand...
Click to collapse
how do we know the brightness was set to the same level on each phone sir ?
wavrunrx said:
how do we know the brightness was set to the same level on each phone sir ?
Click to expand...
Click to collapse
Why would he lie? lol
Some of the screens on the T-Mobile models vary wildly from phone to phone. If you have a good screen, then cool... but some of us do not and are trying to figure out what's going on.
ATT model I had was warm/yellow and also a little brighter. TMO one I bought yesterday is cool/blue but a little dimmer. I always prefer the cooler blue screens.
Skizzy034 said:
ATT model I had was warm/yellow and also a little brighter. TMO one I bought yesterday is cool/blue but a little dimmer. I always prefer the cooler blue screens.
Click to expand...
Click to collapse
Yeah, the cooler blue screen is normal, you got a good one.
wase4711 said:
too bad you didnt have the same page up on both phones for an accurate comparison.AND, some people like warm tones more than cool ones..
Click to expand...
Click to collapse
The reason not to buy warm tone screen one is such screen appears to have more problem (heating, overshadowing, and darker screen) than cool tone screen one.
Both were adjusted to same conditions (brightness, wallpaper) but the one on the left did not have data access.
---------- Post added at 04:47 PM ---------- Previous post was at 04:27 PM ----------
wavrunrx said:
how do we know the brightness was set to the same level on each phone sir ?
Click to expand...
Click to collapse
I already set the brightness to max on both, and set no color adjustment on accessibility.
Even you may not be able to see the page, check out the soft buttons on the bottom.
In addition, I need to check the return policy if I get "warm" screen one because I mentioned above.
The reasons why I purchased a Tab S 8.4 were its awesome screen quality and high grade processor. For the later, the poor touchwiz optimization and the average gpu led to disappointing results. But well, the screen IS awesome !
Or is it ?
At first, I was truly impressed. But after some web browsing and reading e-books, something felt wrong with the colors homogeneity. On white backgrounds, the right part of the screen in portrait mode would tend towards a yellowish tone, while the left part would tend toward purple tones. Nothing obvious, but quite annoying when noticed.
After trying around with different backgrounds, it become more obvious with certain colors. The one used in settings background for example: The left side of the screen is deep blue, the right part is much lighter.. and greener.
Further investigating the issue, I figured it is most obvious when watched in the darkness and using dark colors: RBG such as R:0, G:10 , B: 20 or even R:20, G:10, B:0
Did anyone else notice similar issues ? Would you guys mind trying to create a R:0, G:10, B:20 (#000A14) background and check the result on your tab S in a low light environment ? On mine, it results in an obvious gradation from dark blue to green.
Attaching some pictures. The rendering is not the best especially in the darkness, but the issue remains clearly visible.
There is something very wrong with your screen. Return it.
suzook said:
There is something very wrong with your screen. Return it.
Click to expand...
Click to collapse
I second that, that is not normal
I concur with the others, get it replaced.
AMOLED screens can fail for any number of reasons (pixel death is the main one) , if yours is showing problems get it replaced now rather than live with it and have a more serious problem later.
We've seen this yellow color issue reported by a few others. Looks like Samsung let a few diseased horses out of the barn. I concur with the others. Return it.
Thanks for your feedback, guys.
I'd like to highlight the fact this issue goes completely unnoticed in most scenarios. A friend I showed it on white background didn't notice it at all, in movies/games/pictures I don't see it at all. I only felt it while reading, and even then it was not obvious, just a persistant feeling that led me to further testing.
Only the extremely dark colors seem to be affected, and even then it's only noticeable in the darkness. I will go back to the store tomorow and exchange it for a new one, but I'm wondering if the issue isn't widespread and simply went under the radar as its effect is hardly noticeable in 99.9% of the situations.
Did anyone else check at an homogenous R:0, G:10, B:20 image in the darkness with their tab ?
I personnally used Moon+ Reader's background color settings for testing purpose, pretty easy to set up.
New Tab S, same issue
I changed my Tab S 8.4 today for a brand new one. Same test, same issue: the background is still not homogeneous. The issue is visible in the darkness on dark colors such as the one used for the settings menu, which seems naturally gradated from deep to lighter blue on my screen.
Could someone else test and reproduce the issue on their tab ?
I have tried to reproduce what you're seeing on my 10.5 and honestly I can't. I'm not going to say the white is always 100% pure white but it's close enough. At the same time I'm trying to avoid looking for something that's not there for my Tab.
ukael said:
I changed my Tab S 8.4 today for a brand new one. Same test, same issue: the background is still not homogeneous. The issue is visible in the darkness on dark colors such as the one used for the settings menu, which seems naturally gradated from deep to lighter blue on my screen.
Could someone else test and reproduce the issue on their tab ?
Click to expand...
Click to collapse
Maybe you can go into Settings / Accessibility / Vision / Color Adjustments and see if your calibration is off. There is a test there where you arrange tiles by color gradation and it adjusts your screen. I am having none of the issues you mentioned, but my 10.5 Tab also passed that test with no color adjustments required. Give it a try.
mitchellvii said:
Maybe you can go into Settings / Accessibility / Vision / Color Adjustments and see if your calibration is off. There is a test there where you arrange tiles by color gradation and it adjusts your screen. I am having none of the issues you mentioned, but my 10.5 Tab also passed that test with no color adjustments required. Give it a try.
Click to expand...
Click to collapse
Test completed successfully. The calibration is fine, and the issue is not noticeable during the test. The issue is actually not noticeable in most usages, I only see it on homogenous very dark color backgrounds (the 10% darkest colors), and while in a dark environment myself. In most common usages, the screen looks fantastic and flawless.
Unfortunately, I often use my toys in my bed in the darkness. AND I am concerned about a possible defect that would get worse over time.
That said, tests on similar colored backgrounds on other AMOLED screens (PS Vita, Galaxy SII) lead me to think this could be a global issue with AMOLED.
Unfortunately, I often use my toys in my bed in the darkness.
Click to expand...
Click to collapse
Lol, to those of us with a perverse sense of humor we would refer to that as a hanging curveball.
Whatever issues you are experiencing I would take that over LCD light bleed any day.
ukael said:
Test completed successfully. The calibration is fine, and the issue is not noticeable during the test. The issue is actually not noticeable in most usages, I only see it on homogenous very dark color backgrounds (the 10% darkest colors), and while in a dark environment myself. In most common usages, the screen looks fantastic and flawless.
Unfortunately, I often use my toys in my bed in the darkness. AND I am concerned about a possible defect that would get worse over time.
That said, tests on similar colored backgrounds on other AMOLED screens (PS Vita, Galaxy SII) lead me to think this could be a global issue with AMOLED.
Click to expand...
Click to collapse
Dear Friend. Like you I am very sensible in that point. I have a lot behind me and I can tell you, that homogeneity is something we can not expect from all types of modern displays, except the pro ones with a special function that takes care about this issue. Any screen has such issues, the question is just what type of and the intensity differs. The lower the light in our environment the more sensible our eyes get. The longer we stare into the screen the better we see all color details. Worst case scenario is a totally darkened room. Your eyes won´t get more sensible than in such a situation. Especially AMOLED displays will show the strangest kind of irregularities you would never see normally. I remember the Tab 7.7 -- in a dark room the screen was over and over covered with black circles. Wow ! The Vita shows strange textures instead. It is horrible.
My advice to you would be to start trying to avoid using your tablet or any display in a dark room. Turn a light on, it will be nice for your brain and eyes and you will not see the described things. It´s just a matter of habit, nothing else. You will get used to it and probably feel very well with it. Anyway there will still be the green haze.... Not to talk about the yellowish etc. stuff.
I returned the Tab S for a MiPad and it´s much better, really nice homogeneity (compared to other actual devices).
I had 4-5 iPad Mini Retina and all of them have horrible yellowish/blueish tint.
I had 4 iPad Airs, 3 were horrible in a similar way, now the 4th one is okay, I finally had luck.
I had 2 Galaxy 12.2 - the first one yellowish in a quarter, the second has just a slight, short yellow stripe on the bottom border.
I had a Kindle Fire HD + HDX - both with bad, ugly green spots at borders and corners. Also partially yellowish.
Once I held a Galaxy Tab 3 in my hands that was actually flawless. I was shocked. It never happened again. Was from a classmate.
Today I guess it was a mistake since I could not test in in a home-at-night-environment.
I checked dozens of Tablets in big stores here - guess what I found ???
Look at the iMacs .... Horrible yellowish tint. Horrible. It´s a shame.
I use my Tab S 10.5 in a dark room with some regularity. I've never experienced any of these odd artifacts you guys are discussing. My black screen is just black. Colors look right. White is white. I think its a fallacy to claim that all amoled screens face these issues. The amoled screen on the Tab S is the best most advanced amoled screen ever created. Problems from older devices shouldn't apply here.
Please remember based upon other user input, Samsung did seem to have a run of defective screens on these tabs they put out.
Here's a quick video test taken in a pretty dark room (it's daytime here). As you can see the screen is just black. There is absolutely no reason to avoid viewing your Tab S in a dark room. If you are not seeing the solid black I have demonstrated in this video I suggest exchanging your possibly defective unit.
ukael said:
Did anyone else check at an homogenous R:0, G:10, B:20 image in the darkness with their tab ?
Click to expand...
Click to collapse
In my experience 100% of AMOLED displays exhibit this behaviour, i.e. both Tab S 8.4 I've had! The first one (exchanged because of unhappy whites) had it so obviously that it looked like a diagonal gradient fade to one corner. The second tablet shows it as a slightly patchy screen, see attached photo which looks worse than the reality.
This is only visible in a completely dark room with the display set to its darkest (or close to), displaying a very dark image (my photo is of the spec. you mentioned - hence blue/green colour). To show this I needed to use an exposure of about 1 second, if you use less the image will appear black, likewise (probably) if you try to capture it as a video using normal ISO values in camera, the camera won't pick up the background.
Armpowered said:
In my experience 100% of AMOLED displays exhibit this behaviour, i.e. both Tab S 8.4 I've had! The first one (exchanged because of unhappy whites) had it so obviously that it looked like a diagonal gradient fade to one corner. The second tablet shows it as a slightly patchy screen, see attached photo which looks worse than the reality.
This is only visible in a completely dark room with the display set to its darkest (or close to), displaying a very dark image (my photo is of the spec. you mentioned - hence blue/green colour). To show this I needed to use an exposure of about 1 second, if you use less the image will appear black, likewise (probably) if you try to capture it as a video using normal ISO values in camera, the camera won't pick up the background.
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All I can say is that is seriously messed up. My screen looks nothing like that and just as pitch black as in my video. Considering black pixels in amoled screens are basically turned off, they should be utterly and completely black and devoid of light. Am I misunderstanding and your picture is of a blue background?
All other dark colors should be solid without strange light effects as well.
mitchellvii said:
All I can say is that is seriously messed up. My screen looks nothing like that and just as pitch black as in my video. Considering black pixels in amoled screens are basically turned off, they should be utterly and completely black and devoid of light. Am I misunderstanding and your picture is of a blue background?.
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It's daytime for me at the moment but yes from memory, if you display an actual black image then it will appear as black, you see this effect when trying to display an image that is almost black, at very low levels of light output the (my!) panel isn't even.
The attached image is R0 G10 B20 and on my PC looks black - it isn't I just used "ColorPic" to check the screen colour and it shows those values.
It's not a big issue but does appear when using in fully dark room with brightness turned down, I notice it in some apps that have very dark background colours (which you'd assume were black and see as such in daylight, but aren't).
Obviously under these circumstances an LCD would appear as a (relatively) bright grey !
Armpowered said:
It's daytime for me at the moment but yes from memory, if you display an actual black image then it will appear as black, you see this effect when trying to display an image that is almost black, at very low levels of light output the (my!) panel isn't even.
The attached image is R0 G10 B20 and on my PC looks black - it isn't I just used "ColorPic" to check the screen colour and it shows those values.
It's not a big issue but does appear when using in fully dark room with brightness turned down, I notice it in some apps that have very dark background colours (which you'd assume were black and see as such in daylight, but aren't).
Obviously under these circumstances an LCD would appear as a (relatively) bright grey !
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OK I'm a bit confused. The image you attached looks either black or very very dark gray on my screen. No color variation at all. Oh well
mitchellvii said:
OK I'm a bit confused. The image you attached looks either black or very very dark gray on my screen. No color variation at all. Oh well
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Same on my tab in daylight, it only appears patchy when in a very dark room with brightness turned right down. Maybe amongst the variations some will be perfect?
Armpowered said:
Same on my tab in daylight, it only appears patchy when in a very dark room with brightness turned right down. Maybe amongst the variations some will be perfect?
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Still beats LCD light bleed