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I've found out, that the Amoled can't display perfect black. I tried the desktop clock thing, the blackle Google page (scrolled to black only area), and I made a photo in PhotoShop completely black and open it up in gallery.
What I noticed is, that the screen still is displaying something when it should be black. This is very easy to see if you put the phone to sleep when displaying such black.
What am I missing? Doesn't the Amoled completely turn of a pixel that is black? Can someone try to replicate this?
Do you think it's possible that I have an lcd desire and just don't know it?
Sent from my HTC Desire
I have also a Hero (with lcd display) and black on my Desire is "more black" than Hero's
For me it's ok
If you look at LCD screens through a circular polarisation filter you'll sometimes see coloured patterns on it, or it will get completely filtered out at a certain angle. To the best of my knowledge, OLEDs don't emit polarised light, so if you've been to see Avatar or another movie in Real3D and walked away with the glasses then you can use them as an LCD detector...
(The blacking out effect works as a cool CSI-esque monitor dust detector)
No disrespect, but... who cares???
So the blacks are not as deep as say, a Kuro plasma. This is a smartphone, not a home theater tv.
Jaa-Yoo said:
No disrespect, but... who cares???
So the blacks are not as deep as say, a Kuro plasma. This is a smartphone, not a home theater tv.
Click to expand...
Click to collapse
no disrespect but,...
well real black "off pixel" don't use power so all the people who care about batterylife might care...
s.
I don't think they do emit light on blacks. I have noticed that in a completely dark room I can't see blacks on my Desire at all, it emits no visual light. Maybe the black you were testing isn't pure black.
Sent from my HTC Desire
"It's like, how much more black could this be? And the answer is none. None more black."
Couldn't help myself
Sent from my HTC Desire using XDA App
I do agree that it is much better than any lcd. BUT black should be no light at all. When you turn off the screen when all the pixels are supposed to be off, you see a change. You can also see the outline of the screen when it is in any of the previously mentioned methods of darkness.
Sent from my HTC Desire
I did the following test :
- found a room where I could be in complete darkness
- used the following enclosed file (a pure RGB=(0,0,0) 800x480 png file) and displayed it fullscreen on my phone.
- use the palm of a hand to cover the 4 lit buttons
- the screen is pretty damn BLACK ! (an LCD screen, next to it, also displaying black pixels, would look like a torchlight)
- After a minute or so, the eyes getting used to the darkness, I could very slightly see the screen. I don't know how the phone is built, but I'm guessing it's a light "leak" coming from the LED(s) of the 4 buttons.
I tried this procedure at various brightness settings (from min to max) : the remaining light coming from the screen did not change.
Is there a mod to kill the buttons backlight ?
It is possible to kill the backlights, but have not tried it myself.
http://forum.xda-developers.com/showthread.php?t=704977&highlight=buttons+backlight
Ok, switched off the buttons backlight thx to Flaggie. The screen indeed still emits some light when displaying a full screen black picture. Strange.
It would be interesting to get an explanation from HTC about this, but i'm pretty sure it pointless hoping they would reply to such a question. I'll give it a try...
Perhaps you hae one of those new Desire models with a LCD screen?
No, I bought it the day it came out. Try out on your own. The test I detailed is pretty straight forward...
kekkle said:
Perhaps you hae one of those new Desire models with a LCD screen?
Click to expand...
Click to collapse
That is what I thought at first, but than the amount of light on dark would change when you change the brightness.
I want to know what HTC has to say about this.
PS: I bought my phone in June.
Sent from my HTC Desire
OMG does any of you know how a led screen works? lol Active Matrix Organic Light Emitting Diode its name clearly states that the pixels are self-illuminating so clearly unless the screen is of the display is always going to give some light off
It is actually the other way around. They are self emitting, they can turn off. LCDs, however have a backlight, which doesn't turn off, so some light still passes through.
Sent from my HTC Desire
OLED can havae infinate contrast ratios. I have a cowon s9, it has an OLED screen and in a pitch black room you cannot tell it's on. The desire does emit some light even on true black :-/
AndroHero said:
OMG does any of you know how a led screen works? lol Active Matrix Organic Light Emitting Diode its name clearly states that the pixels are self-illuminating so clearly unless the screen is of the display is always going to give some light off
Click to expand...
Click to collapse
OMG please read the Wikipedia article...
Unlike over saturated colors and Pentile jagginess which are clearly visible and to some point distracting (at least to me) this seem like pure academic issue, since it can be visible only in total darkness and even then it is not visible unless screen is completely black.
What would be practical purpose in looking at black screen in darkness?
vlasac said:
Unlike over saturated colors and Pentile jagginess which are clearly visible and to some point distracting (at least to me) this seem like pure academic issue, since it can be visible only in total darkness and even then it is not visible unless screen is completely black.
What would be practical purpose in looking at black screen in darkness?
Click to expand...
Click to collapse
I agree. This is an academic issue, but aren't you a bit disturbed by the fact that there has been soo much talk about this oled screen and its pure black, and it was all a lie?
I think the problem might be in the image to screen processing where it gets converted to the pentile matrix(and over saturated).
Sent from my HTC Desire
Any else notice dark blobs when displaying black backgrounds? I believe they're air bubbles, as they disappear when pressed. Is this typical of SAMOLED screens and does it go away? Or should I take my device back in?
Sent from my Galaxy Nexus using XDA App
I have noticed some lines on my screen when displaying in low brightness, do you see these spots on all brightness levels ?
Resolved! Looks like using the handset for a day--pressing it against my face, putting it in my pocket, et cetera--has made the blotches disappear. I only noticed them last night while reading from the kindle app, night mode, minimum brightness in a dark room. It's been about 12 hours since (and a little less than 24 hours since purchase), and testing it again in a dark room, the blotches are no longer an issue.
My theory is that it was air bubbles between the digitizer/glass/lcd, and it hadn't quite 'set'. This phone has only been out a week here in Korea, and it's been sold out everywhere, so I'm guessing that we're receiving these units as soon as they roll off the assembly line. The store I bought mine from didn't even have them on site, so they had to get a bike messenger to bring one from another location.
No lines, however. I'm not sure what that's about. Is it a banding type effect? Or are they thin, sharp, and jagged?
Goat_For_Sale said:
I have noticed some lines on my screen when displaying in low brightness, do you see these spots on all brightness levels ?
Click to expand...
Click to collapse
the lines are due to the pentile screen. at least with the higher res/ppi it doesn't do that fuzzy text/icon b.s. like the RAZR(at least not noticeably to the average eye).
Hi all.
Last night I accidentally discovered the burnt pixels on my one year old Focus screen The sights of high contrasts Metro-style icons (such as IE, phone and marketplace) are visible on the white background as a darker "shadows" (actual color is like a light-light yellow, close to white). These "shadows" are visible on the white background in the dark only.
It's not a big deal but I'm kinda disappointed
So, my conclusions are:
- high contrasts Metro-style tiles on the home screen are evil, at least for AMOLED screens. However live tiles (probably) can solve the issue (he-he, just thought - may be it's a real reason why MS implemented and pushing live tiles? Kidding );
- periodical changing of tile location on the home screen also can help;
- using AMOLED handsets for development is not so good. The best practice is to keep AMOLED screens off all the time (what is not acceptable for development).
My Focus is one year old, but I don't have any burn in problems some reported. Granted, I don't leave my phone screen on for extended periods, but my live tile arrangement really never changed.
Now that I have the HTC Titan, I have no regrets with the SLCD screen. The colors seem more natural to me. While AMOLED screens certainly have a "pop" factor, it's not a must-have for me.
This is a well known issue that you have to live with: AMOLED will get screen burn-in if it is use for an extend period of time.
I know most of the Android Galaxy phones also have screen burn-in especially on the status bar.
My own Samsung Focus developed screen burn-in (esp. Metro buttons) after only three months of use.
day2die said:
This is a well known issue that you have to live with: AMOLED will get screen burn-in if it is use for an extend period of time.
Click to expand...
Click to collapse
How about Super AMOLED screens, is problem still persists?
I notice things on my Omnia 7. Normally if i've had a menu open for a minute or more and i switch to a black background i can see a kind of greyish imprint of the last displayed icons.
sensboston said:
How about Super AMOLED screens, is problem still persists?
Click to expand...
Click to collapse
SAMOLED has it as well. I'm sure it was a big issue in the focus forums last year
The biggest disadvantage of an amoled screen is when you move to another type of screen, and notice just how gray blacks can be. Using my old focus and having the blacks blend with the bezel was so visually pleasing, and the colors had so much pop. I hear that the colors aren't as accurate, but what does that mean really? 90% of what I look at on a phone is arbitrary colors anyway; how would I ever know that the blue tiles are really supposed to be one shade vs. another, and why would I care?
(btw yes, I had the same screen burn-in problem on my focus)
Yeah i had a major burn in problem with my Omnia 7, I think it was something to do with the bright blue theme i used, i have pictures here: http://forum.xda-developers.com/showthread.php?t=973337
use a screen saver?
Oh ya.. nevermind
Wow... I had no idea of this...
I have a Galaxy S I9000 (as well as an LG Quantum) and luckily it hasn't burnt in...
Is this a really wide spread problem?
renatofontes said:
I have a Galaxy S I9000 (as well as an LG Quantum) and luckily it hasn't burnt in...
Click to expand...
Click to collapse
Try to look at your screen in darkness (set white background on the fullscreen first), then say "luckily"
sensboston said:
How about Super AMOLED screens, is problem still persists?
Click to expand...
Click to collapse
The problem is particularly bad on Super AMOLED screens.
Super AMOLED is still AMOLED.
My Vibrant, if I turn my screen on to the home screen and let it sit there for 10 seconds and then open another app, I can see the shadows on the home screen superimposed onto the app that's running. It's very noticeable, and gets irksome after a while. You won't see that on LCD screens.
The status bar is burnt in, which is noticeable when the phone is used in landscape mode because you can always see that faint strip where the status bar is (in portrait) on the side of the screen.
I set my screen timeout to 30 seconds to "preserve" the screen.
---------- Post added at 05:33 PM ---------- Previous post was at 05:30 PM ----------
renatofontes said:
Wow... I had no idea of this...
I have a Galaxy S I9000 (as well as an LG Quantum) and luckily it hasn't burnt in...
Is this a really wide spread problem?
Click to expand...
Click to collapse
All of Samsung's displays have this issue. Perhaps you just haven't noticed it, or are just fortunate
Not really widespread, and not really a "problem" per se. Just a component of the screen tech. It burns in and shadows easily.
However they have better power management than LCD screens and better brightness, viewing angles, and outdoor visibility - as well as better color saturation and reproduction. For example, I increase my Vibrant's stock battery life by like 4+ hours doing absolutely nothing but putting a true black background on the launcher...
It's a trade-off. It's worth it for someone like you who doesn't notice it, though. It's worth it even for some people who do. It really depends on how long you keep your phone, Lol. If you upgrade yearly it's not that big a deal. I can't see myself going 2 years with the Vibrant as my primary device and dealing with it, though. It's too startling to look at at times, especially after you spend a significant amount of time in one app with static UI elements and move to something else...
If you look at the AMOLED technology, it's understandable really. All the colours displayed on the screen are composed of green, red and blue sub-pixels.
In an AMOLED screen, there is no backlighting. The sub-pixels themselves generate the visible light, hence why the blacks are so black, because the black pixels are not powered on. (Think of an AMOLED screen as having thousands of tiny tiny LED's)
However the problem with AMOLED is the manufacturers could not produce a specific chemical compound for each colour that would wear evenly. For example, the blue sub pixel has a shorter lifespan than the green. When the AMOLED sub-pixels gets used, the intensity of light produced decreases, hence there is uneven wear. The pentile arrangement was to actually arrange the pixels in a way, which as the display wears, the colours look normal. When there are static pixels displayed, a certain portion of sub pixels gets used more than others, hence why you can notice it.
In an LCD, each sub-pixel is a polarizing filter, which filters out either red/blue/green and displays it or blocks it, so an LCD doesn't suffer from screen burn in as much as AMOLED and PLASMA displays.
From day one I have only ever used my phone on the lowest setting and I have alternated every few days from red/green tiles. I have never used blue due to the low lifespan of blues!!
I don't think it's a huge problem if you are smart. I made the mistake of leaving my screen on as often as possible when I first got my focus. Once I started noticing the burn in, I moved my tiles around, put my screen on 2 minute timeout, and didn't notice any more of the burn in. Just the original images.
As Big K mentions, blue pixels are the quickest to degrade, that is why you never use a blue theme with an AMOLED display. Also, displaying white actually activates some blue pixels and draws more power, so the black system theme should always be used over white.
Every AMOLED owner should know these 2 things and it is a shame that Samsung and the carriers don't do a better job of informing their customers of these simple facts.
I cringe every time I see an AMOLED phone with a white background and blue theme.
This is why I still stick to Super LCD.
I saw an S2 get a burn in within 2 months of use. Lawl.
ohgood said:
use a screen saver?
Oh ya.. nevermind
Click to expand...
Click to collapse
The solution is ridiculously obvious: turn off your screen when you're done using the phone. Duh. That's obvious from a simple battery life perspective.
Of course, I see people *constantly* who just set their phones down with the screen on and walk away. Idiots.
jasongw said:
The solution is ridiculously obvious: turn off your screen when you're done using the phone. Duh. That's obvious from a simple battery life perspective.
Of course, I see people *constantly* who just set their phones down with the screen on and walk away. Idiots.
Click to expand...
Click to collapse
The solution is not ridiculously obvious because other screen types do not suffer from thsi issue, therefor the user who moves from an LCD screen to an AMOLED has absolutely no clue that this screen type has these deficiencies. They simply assume their screen will always look the way it does as long as they take care of their phone.
That is not a bad assumption. It just doesn't jive with this display tech.
I love the deep blacks and color saturation on Samsung's AMOLED screens, but I don't think I can ever convince myself to get another one.
The issue isn't just keeping the screen on. I've always used a 30 second screen time-out on all my phones, so they aren't just sitting there a ton with an image on them. Even when you have something on the screen for like 10 seconds and move to another app you can see the image shadows on the screen. Yes, it gets pretty noticeable after a while to the point where it's constantly drawing your attention.
It's actually worse than the PenTile they use in the 1st gen SAMOLED screens, TBH.
N8ter said:
The solution is not ridiculously obvious because other screen types do not suffer from thsi issue, therefor the user who moves from an LCD screen to an AMOLED has absolutely no clue that this screen type has these deficiencies. They simply assume their screen will always look the way it does as long as they take care of their phone.
That is not a bad assumption. It just doesn't jive with this display tech.
I love the deep blacks and color saturation on Samsung's AMOLED screens, but I don't think I can ever convince myself to get another one.
The issue isn't just keeping the screen on. I've always used a 30 second screen time-out on all my phones, so they aren't just sitting there a ton with an image on them. Even when you have something on the screen for like 10 seconds and move to another app you can see the image shadows on the screen. Yes, it gets pretty noticeable after a while to the point where it's constantly drawing your attention.
It's actually worse than the PenTile they use in the 1st gen SAMOLED screens, TBH.
Click to expand...
Click to collapse
1st gen? It's being used in the Galaxy Nexus, too
It's a really useful point to raise, and something to think about for people using their phones for development. Automatic screen time-outs can be an annoyance when you're testing features (against a real device), and wanting to stay connected (in visual studio) to the phone for debugging info and deployment. I know I have my current phone on most of the day to test tile and page updates etc. so there's bound to be large areas of the screen remaining static for long periods of time.
It's made me think twice about getting a Lumia (which I assume would be prone too) for this reason
I'm surprised manufactures don't include info on it bundled with the phones (e.g. on not having a white background) - that's pretty irresponsible.
I'm writing to see if anyone here might have the same issue I'm having with my Note 4.
When it's bright outside, sometimes, the screen not only amps up the brightness, but for some reason all the colors on the screen appear really washed out. Facebook's logo is now neon blue, Evernote is like a pale lime, etc. All the colors are horribly ugly. If I open an app, or the drawer, the screen goes back to normal color, still bright though.
This ONLY happens (thus far) when I've turned the phone on while being in direct sunlight.
If I manually turn my brightness level ALL the way up, the colors still appear fine, I can't make the screen wash the colors out like that manually (not with brightness levels or adaptive display modes).
This also doesn't happen every time I wake the phone up while in direct sunlight, but about 50% of the time.
So, anyone else have this problem? Is it normal, or should I try to get a replacement? Course, since I can't replicate it on demand that will be a PITA.
Thanks
Happens to me as well. I even went to far as to disable the "dynamic screen adjustment" or whatever it is, and it still happens. Just like you said, only in direct sunlight.
It's too make the screen more viewable in direct sunlight.
washing out the colors is normal in order for the phone to be bright enough to see in direct sunlight. I, for one, love that they did this because i can see the screen perfectly in bright sunlight.
nyydynasty said:
washing out the colors is normal in order for the phone to be bright enough to see in direct sunlight. I, for one, love that they did this because i can see the screen perfectly in bright sunlight.
Click to expand...
Click to collapse
I'm with you on this one, I think it's an awesome function. Heck when I found out it did I was showing everyone lol I have noticed that it's only sunlight cuz I tried using my note 3 flash light to do the same thing but to no avail.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
589
Yes if you have your note 4 set to auto brightness, in direct sunlight the phones backlight will push the brightness all the way up to 750nits of brightness. It will wash out the colors, but it makes the screen very visible in direct sunlight. I personally love the feature, no need to cover your hand over your phone to see a text message or something else anymore. If you don't like, like myself, I manual adjust brightness myself. Half brightness is plenty bright for any other time of the day.
This happened to me yesterday and I thought my phone was going bad. It was a wtf moment for sure. Glad to know it's a feature and not an issue with the screen. I turned the screen off then on and it went away (might have been walking indoors).
I had this happen in the day time while I was in the car multiple times, so I just turned off the automatic brightness, solved my issue.
This is the first phone that has ever been bright enough for me to read books with in the noon day sun. So I'm loving this feature bigtime. I think the automatic feature could use some fine tuning because indoors it dims the brightness too much for me but otherwise... loving it.
Freaked me out the first time it did that to me outside, but quickly realized it was on purpose to make it more viewable since it was so bright outside. Love that feature tho
nyydynasty said:
washing out the colors is normal in order for the phone to be bright enough to see in direct sunlight. I, for one, love that they did this because i can see the screen perfectly in bright sunlight.
Click to expand...
Click to collapse
I love that they did this. 1st phone I've had that I can easily see the screen in direct bright sunlight. Good job Samsung.
I was shocked when I first saw it this morning... then did a google which led me here... thank God it aint faulty...
I was shocked when I first saw it this morning... then did a google which led me here... thank God it aint faulty...
I think I have this issue but idk. Dark pictures on my screen show horrible and like blocky when there's blacks. The Samsung boot screen has a yellowish greenish tint to it. My colors look washed but it isn't horrible just the dark colors and blacks get to me
NexusS4gFreak said:
I think I have this issue but idk. Dark pictures on my screen show horrible and like blocky when there's blacks. The Samsung boot screen has a yellowish greenish tint to it. My colors look washed but it isn't horrible just the dark colors and blacks get to me
Click to expand...
Click to collapse
For example this is how my blacks show
Has anyone worn a bright white face here yet using WM? Every time I set a bright white face, the screen flickers a little when dim mode is active. It is so hard to see it but it's definitely there. I have troubleshot for 12+ hours and have determined that it just can't be a hardware issue because any other bright face is fine and in normal/non-dim mode, everything is perfect! Plus, when I use a chronograph with bright white dials, the flicker isn't there at all. I know one thing: I'm NOT RMA'ing this thing until the 11th month OR if ti fails, lol. Thanks in advance for your input!
Yes, I have seen this too. It only happens with a white face in dim mode.
I don't think it's a big deal as I am not sure that we should be using a white face in dim mode, as it "could" cause burn in (but not sure about that).
I have the same thing on my watch. I tought it was my Android phone at first so I did a factory reset on the watch and tried it on an iPhone 6 running iOS 9 and still saw this issue.
You can clearly see the flickering on Catchcat watchface app. https://play.google.com/store/apps/details?id=dd.watchdesigner.catchcat
It's really annoying and I'm hoping there's a software fix so I don't have to return my watch.
Would this also happen on the moto 360 2nd Gen? I know the screen is not AMOLED...
Thanks guys, I was starting to think it was me since no one else saw it when I posted on G+! I'm hoping it is a software issue at this point.
Hey Jeff! Just chiming in here. Like you, I do change up my faces and have tried to troubleshoot and replicate the flicker. I think my eyes are going so I don't really notice it. Did you try using the animation boost in Watchmaker to see if that does anything? I personally think it's a refresh issue, because of the res of the Huatch, it can't handle it when going into dimmed mode. Just thinkin out loud lol.
kpjimmy said:
Hey Jeff! Just chiming in here. Like you, I do change up my faces and have tried to troubleshoot and replicate the flicker. I think my eyes are going so I don't really notice it. Did you try using the animation boost in Watchmaker to see if that does anything? I personally think it's a refresh issue, because of the res of the Huatch, it can't handle it when going into dimmed mode. Just thinkin out loud lol.
Click to expand...
Click to collapse
Hey, long time to hear I definitely misunderstood you on that one...I thought you meant the bright>dim animation transitions, which I don't use. I actually didn't try the animation boost yet under settings, will try that! For the record, I still find this to be my favorite smartwatch:good:
tgcid2040 said:
I have the same thing on my watch. I tought it was my Android phone at first so I did a factory reset on the watch and tried it on an iPhone 6 running iOS 9 and still saw this issue.
You can clearly see the flickering on Catchcat watchface app. https://play.google.com/store/apps/details?id=dd.watchdesigner.catchcat
It's really annoying and I'm hoping there's a software fix so I don't have to return my watch.
Would this also happen on the moto 360 2nd Gen? I know the screen is not AMOLED...
Click to expand...
Click to collapse
The Moto 360 2 has a very "dim" ambient mode so no, it definitely will not flicker but who cares when you can't even see it, LOL. Please let us know if you decide to return it and/or contact Huawei about this.
There is one solution that works quite well.
Place a solid black circle on the top layer (actually below the hands layer).
Make the layer dimmed only.
Use opacity to suit eg 60%.
When watch goes to dim or wakes up from dim, the flicker will be much less noticeable.
niteowl360 said:
There is one solution that works quite well.
Place a solid black circle on the top layer (actually below the hands layer).
Make the layer dimmed only.
Use opacity to suit eg 60%.
When watch goes to dim or wakes up from dim, the flicker will be much less noticeable.
Click to expand...
Click to collapse
Nice to see you here too The flicker only occurs when a white face is sitting in dim mode. (not the transition) What's really odd is the fact I can still see the flicker after adding a circle at 80% opacity in dim only...weird issue. (almost like it cant handle any whites in dim mode/low power mode) As I mentioned on Google+ it's not a big deal, I never wear white faces. (was just testing them) Thanks anyway!
niteowl360 said:
There is one solution that works quite well.
Place a solid black circle on the top layer (actually below the hands layer).
Make the layer dimmed only.
Use opacity to suit eg 60%.
When watch goes to dim or wakes up from dim, the flicker will be much less noticeable.
Click to expand...
Click to collapse
Great, it works :good:
Great. Thanks for feedback. Cheers
My watch also flickers but only in sunlight. If I'm somewhere indoors I can barely see it but its definitely there. It also happens with black watchfaces and white numbers. Anyone with the same problem?
I know this is old post, but mine also does that. Black face with white numbers and hands. It flickers only when outside in sunlight.
So what's the solution? I modify my watchmaker face to put a black circle with an opacity on top of everything?
Again, sorry for raising a dead thread, but these are my thoughts:
I think the hwatch is just lowering the refresh rate of the screen in dim mode as to preserve battery life. Instead of running at 60hz it's probably clocking down to 30hz or something of that nature.
Just a guess.
My Huawei Watch slightly flickers when activate the dimmed mode. Only in faces with clear backgrounds
pretty sure some talanted dev can just look into the kernel/settings because its just a refresh rate setting.
I think its absolutely normal unless its literally flickering right infront of your eyes all the time...it depends when your eyes catches the screen (on a white background ) the level of degree you see it. Im sure it flickers but our eyes cant see it
Sent from my SM-N920T using Tapatalk
My watch has the same thing but you can see the flicker really good when using a white watchface in dim mode.
So this is "normal" and i don't have to RMA it?
Check flickering under normal light. Outside. Mike
Great "fix"
niteowl360 said:
There is one solution that works quite well.
Place a solid black circle on the top layer (actually below the hands layer).
Make the layer dimmed only.
Use opacity to suit eg 60%.
When watch goes to dim or wakes up from dim, the flicker will be much less noticeable.
Click to expand...
Click to collapse
Thanks ! That's an easy and effective fix...