Related
I have an Epic 4g Touch (SGSII), and am wondering about screen burn-in.
I already know it's possible to burn-in our Super AMOLED+ screens, but I'm wondering what kind of things I can do to prevent it, and if doing certain things will accelerate the burn-in or not.
1. I'm mostly indoors, so I always keep the brightness set to 30%. This should be sufficiently low to slow the burn-in, correct?
2. I use ADW Launcher Pro, but I don't have it auto-hiding the notification bar. My screen is on between 1-3 hours per day. Should I be using the auto-hide feature?
3. I was thinking about using the clock in dock mode at night while I charge my phone. I set the brightness to the lowest possible setting, and I know that after a few minutes, the phone sets a black background with the clock text being yellow and moving around the screen every minute or so. With all of that in mind, is that going to be bad for the burn-in?
4. This is kind of related to #3. If a pixel is pure black, is it susceptible to burn-in?
Thanks in advance to all replies. I'm pretty tech savvy, but kind of a noob when it comes to these advanced screen questions.
Awesome, thanks. Wasn't aware of that strobe trick; I'll have to start doing that
newalker91 said:
My suggestion to reduce any and all burn-in is the same trick used to fix stuck pixels on LCD screens. Download a strobe light application that uses multiple colors, and once every couple of weeks allow your phone to sit while your screen rapidly flickers through all of the colors for about 10-15 minutes. This will wash away any burn-in that may be building.
Click to expand...
Click to collapse
I just had a thought...
Isn't burn-in caused by pixels becoming physically damaged? So how can a strobe light app that uses these damaged pixels "wash away" burn-in?
Not trying to be rude or anything; I definitely appreciate everyone's knowledge on this subject. I guess I'm just looking for more information.
personally i wouldn't worry too much about burn in. things move around enough on these phones to mostly prevent it.
and for what it's worth i still use my original samsung launch day moment as a clock for the last year or so and have yet to notice any burn in at all (and that clock doesn't bounce around) sometimes during the day i still use it as a media player or terminal device too. screen still looks awesome (not compared to the gsii but)
granted the moment was super amoled not super amoled+ but heh....
newalker91 said:
No, the Samsung Moment was sure not Super AMOLED. It was LCD. I've taken probably a thousand of them apart.
Click to expand...
Click to collapse
you sure? the og box i have on my shelf def says amoled.
EDIT. ok maybe its not SUPER AMOLED. But it def is AMOLED.
"3.2-inch AMOLED display"
newalker91 said:
Regular AMOLED displays are basically the same as LCD screens. They function completely different than Super AMOLED.
Click to expand...
Click to collapse
the only difference between amoled and super amoled is the PenTile RGBG pixel matrix is replaced with a common RGB subpixels arrangement, going from eight to twelve subpixels in a group, resulting in finer details. The screen technology is also brighter, thinner and 18% more energy efficient. super amoled+ adds more of the same just brighter lighter and less power hungry.
yes any led panel (amoled and super amoled) is just an led panel thats true.
its the material used for the led catalyst (organic) and position of the film in the glass (under not over) that differentiate them.
but then again it's really not an issue. and i could be wrong.
all i know is that my moment has been left on in situations that i know would cause burn in on any normal lcd style device and has never been an issue.
for the length of time that most people keep a phone (2years or so) i personally wouldn't worry about it.
that being said OLED pixels degrade with use (become dimmer, and the different colour pixels degrade at different rates), but according to most screen datasheets ive seen we are talking 15-20,000 hours of screen on use for a noticeable difference.
just ask yourself this do you ever see screen burn in on display phones that are left running screen on all day?
but didn't mean to push the thread offtopic
I have seen burn in on my Captivate, so yes it will happen.
yep it will happen in certain circumstances i just went looking through my old amoled info and found this link
http://data.4dsystems.com.au/downloads/micro-OLED/Docs/4D_AMOLED_Presentation.pdf
this has a lot of good info but is out of date.
what we get isn't true burn in (although the outcome is similar)
what we see as burn in is really the degradation of pixel intensity and has alot to do with the colors the screen must display. so even a moving clock is degrading the pixels just that it's degrading them (hopefully evenly across the screen) the super amoled+ screens seem to have added a white led to the mix to help prevent burn in from white screens/txt and lower power consumption.
it also appears some colors are better for screen life than others with blue having the shortest life.
keep in mind if your interested in looking at the link that it is describing the first gen amoled screen and much has been improved since then.
from this i would also make the assumption that flashing the screen doesn't unstick any pixels it just burns them all out a bit.
i'll shut up now
Well I've done some more research too, and found that what mjcollum said is pretty much the case for us. We don't actually get a "burn-in", but rather the pixels degrade and leave a sort of "ghost" image where the degradation is worse than surrounding areas.
The "half life" of older AMOLED pixels was 14k hours, but most articles I've encountered mention that technology has improved, ergo the pixels should last a bit longer in our Super AMOLED+ displays.
But still, there will definitely be some degree of degradation. I suppose it's a lot like sex; leaving the screen off will keep your pixels the safest, but it's a lot more fun to use what you've got
I only wonder if a dim display degrades slower than a brighter display... ?
interesting. good to know.
does this apply to qhd displays like the photon also? or is this only a amoled thing?
newalker91 said:
Regular AMOLED displays are basically the same as LCD screens. They function completely different than Super AMOLED.
Click to expand...
Click to collapse
The moment was AMOLED... it had a seperate digitizer.
The Galaxy S was Super AMOLED it incorporated the digitizer with the pentile matrix.
The Galaxy S II is Super AMOLED+ which replaces the pentile layot with the standard RGB grid.
To prevent burn in limit screen on time, no need to do any crazy pixel unsticking tricks as it'll just reduce the vibrancy of your screen.
thanks warlord good to know.
one thing to think about is even if the pixel halflife is only still 14k hours
365(days) x 24(hours) = 8,7650 hours if you left it on for a full year.
so i say just use the thing.
---------- Post added at 10:19 PM ---------- Previous post was at 10:13 PM ----------
SpaceMonky said:
interesting. good to know.
does this apply to qhd displays like the photon also? or is this only a amoled thing?
Click to expand...
Click to collapse
i could be wrong but i believe the qhd part just references the resolution.
and the photon has a normal style lcd display. so if it got burn in at all it would be the normal lcd style.
mjcollum said:
i could be wrong but i believe the qhd part just references the resolution.
and the photon has a normal style lcd display. so if it got burn in at all it would be the normal lcd style.
Click to expand...
Click to collapse
You're correct, qHD only references the resolution, not the display type. Which is funny, because a lot of Google searches are for "qHD vs Super AMOLED+". I think people are just trying to pit their Droid Bionics against our SGSIIs
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.
Most of us know by now the limitations of Producing AMOLED Displays for devices such as the Galaxy S, S2, Note 1, S3, and Note 2. All of these devices share the same screen-technology. There is always praise for OLED, but the technology is still pre-mature; that is why when you look at your display in the dark, you come across something called, the Mura Effect. Some folks claim they don't have it on their AMOLED displays. However, all AMOLED displays have this limitation. Obviously, Samsung doesn't want to tell you this. Some might then consider their phone to be defective, whereas some won't.. There is some degree as to how much Mura Effect your display has. Some displays have the Mura Effect in the form of black lines, / blotches, & dots, and some will have them in the form of faint stains, which can only be looked upon when viewed closely in the dark.
From my understanding, the Mura Effect occurs due to the way the display is aligned with the TFT. AMOLED displays are assembled in two layers, the OLED film on top, and the transistor plane below. Due to limitations of the manufacturing process, it is very difficult to get both layers aligned correctly & perfectly to produce a uniform, seamless, display; note that AMOLED displays are very thin. The contacts of the transistors which power the OLED screen are not 100% set on our displays. Therefore, problems begin to stir when you bring the brightness down to the minimum level; insufficient voltage prevents all the pixels on your AMOLED display to light uniformly. That's why brightness unformity issues are very common in AMOLED Displays as well. Voltage is too low at low brightness to get flawless picture quality. The low voltage at low brightness is too low to power all the pixels effectively in our displays. This explains why the Mura Effect shows.
I've made some interesting observations on the past AMOLED display's I've dealt with in the past.
1). In Displays which do not consist of black lines and blotches, but do consist of blocks of faint black stains entailing the Mura Effect; and faint horizontal lines (which become more prominent overtime), burn-in faster, and brightness uniformity issues, become quickly apparent in these particular displays. Colors are warmer compared to the contrary. Some yellowish tint / pink hue is also to be spotted.
2). Whereas, in displays which do display their Mura Effect in the form of lines of little blotches / dots, tend to have a better color reproduction & brightness uniformity, and do not show faint horizontal lines quickly overtime; though they eventually do due to the organic (half-life) nature of OLED's. Yellowish-tint is rarely found. However, blue-tint is more apparent on displays with this degree of Mura Effect.
[Note: Yellowish tint is not the result of glue (common in LCDs); the Yellow tint is a calibration issue, and though sometimes kernel / software updates may resolve the issue, the yellow tint is not completely gone].
My ultimate question is, does the kind of Mura Effect on the AMOLED screen on each Note 2 unit manufacture thus far determine the life expectancy of the display itself? What about the formation of dead pixels? Do dead pixels (due to low-voltage effect) form frequently depending on the extent of Mura Effect on our displays? If my display for instance has black lines / blotches / dots, does that increase my chances of living with a dud phone?
Similarly explained in the following thread from last week,
http://forum.xda-developers.com/showthread.php?p=36908128
The AMOLED Displays use an "Active-Matrix" compared to standard OLED's in today's flag ship televisions which do not have an Active Matrix.
In AMOLED, as a result of continuous low voltage that is being fed into OLED via the TFT even in the lowest brightness, the blacks won't be necessarily black.
Every Note 2 has the Mura Effect like in previous Galaxy Devices. However, the manufacturing process has slightly improved, but not to the extent we all would like it to be.
Unfortunately, I don't consider our displays to feature local dimming, because individual pixels do not actually turn off. Blacks are not blacks, as a result of the varying voltage.
Although there are improvements to the AMOLED display as explained here,
http://www.ignisinnovation.com/technology/ignis-technology-overview/ignis-admo-p-technology
Unfortunately, even though the solution provided in the above link by ignisinnovation has been in the market for a couple of years already, Samsung does not employ these kind of standards, therefore every AMOLED display has the Mura effect but in varying degrees such as in the form of stains, lines, blobs, dots, and splothces. This can also affect the display output when it comes to uniformity because the TFT is solely responsible for the luminescence of individual sub-pixels on the OLED film.
The AMOLED displays are improved with compensation.
http://www.youtube.com/watch?v=ctA114zaY98
When I say manufacturing has gotten better, I meant that Samsung's method of making slightly better AMOLED displays has been accomplished by changing the voltage and better quality control handling.
The material has been slightly improved; the material used on today's AMOLED displays is purer than let's say the material that was used on the S2 and Note 1.
Let's hope that future AMOLED displays by Samsung will be free of Mura and other Quality Defects.
Compesation for a Relaxed Area,
http://www.youtube.com/watch?v=tFgo6CIZgmo
I haven't noticed any such effects with the Note 2, but I did notice them on the Galaxy Nexus, when brightness was turned down 'below' what the factory minimum level was set to (20).
They still exist on all Note 2's in a form which appears less severe and is different from the one you observed in the Galaxy Nexus
winlinmac001 said:
They still exist on all Note 2's in a form which appears less severe and is different from the one you observed in the Galaxy Nexus
Click to expand...
Click to collapse
The only screen "defect", if you will, that I've noticed on my note 2 is as described below:
When a pure black screen is displayed and it is observed in a completely black room, there is a noticeable red glow emitted from the screen itself. Like the red sub-pixels doesn't turn off completely or something. The brightness contol affects the brightness of the prominent red glow.
Not really an annoyance, and I rarely even care, I just wonder why. I figure if the blacks completely shut off the sub-pixels, It would save battery power (a negligible amount)
I compared this same scenario on a Nexus S that my sister has, and her screen is completely black compared to mine (which glows red).
I just thought I'd make a comment on the subject matter.
hiii,
i bought my note 2 on 29-1-2013
now what i noticed in my screen,
there middle 10% part is shaded with 1% opacity,
if we look closely then it's not noticable as u seen from far,
from naked eyes is too difficult to see,
its not like Colours are gone, only looks like shade,
if i increase brightness to 100% then the small shade like finish.
i m confused that it is defected or not,
is that Normal, does nay body heard that type of case,
Please make me happy,tell me that it is Normal,I dont wana give my phone to bad service guys. :crying:
vebulous said:
The only screen "defect", if you will, that I've noticed on my note 2 is as described below:
When a pure black screen is displayed and it is observed in a completely black room, there is a noticeable red glow emitted from the screen itself. Like the red sub-pixels doesn't turn off completely or something. The brightness contol affects the brightness of the prominent red glow.
Not really an annoyance, and I rarely even care, I just wonder why. I figure if the blacks completely shut off the sub-pixels, It would save battery power (a negligible amount)
I compared this same scenario on a Nexus S that my sister has, and her screen is completely black compared to mine (which glows red).
I just thought I'd make a comment on the subject matter.
Click to expand...
Click to collapse
Thats normal on the Note2, between the Galaxy S/S2/Note1 the note 2 has the 'brightest' blacks while the S1 has the dimmest and they dont really shut off.
I have these dots and lines on my note 2, galaxy s3 (changed 5 times and all of them had it) and my galaxy s plus
Sent from my GT-N7100 using Tapatalk 2
lopman said:
I have these dots and lines on my note 2, galaxy s3 (changed 5 times and all of them had it) and my galaxy s plus
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Had dots on my Galaxy S2, dots and lines on my Note 1, dots/lines on my Tab 7.7
No dots/lines on my Galaxy S and Note 2
I've noticed that the black levels have changed over the last couple of Galaxy-line generations. I never saw anything significant with the Galaxy S, but that was because the blacks were more dark. Moving further into the subsequent years, the blacks began showing the Mura Effect very prominently. Every AMOLED display will have its quality variations. The units that do have the "noticeable" Mura Effect may even survive longer than the units that do have Mura Effect, but without lines, dots, and other artifacts. Its a give or take; if you buy a new AMOLED unit today, you will definitely come across some artifacts, especially dots. Each display manufactured requires special attention in order to perfect the manufacturing process, but this almost never happens in Samsung's assembly line, only because AMOLED technology is a very delicate piece of hardware.
hi.. i have an international SGN2 with normal super AMOLED display which is too much in contrast. if you want to have a crystal clear display why not choose true hd ips screen?
sorry my english..
Many don't choose the True HD IPS screen because many have the misconception that AMOLED displays provide a better color gamut, therefore a providing richer colors, accurate RGB, and premium experience. However, this is no longer necessarily the case. True HD IPS Displays have come a long way and are now thought to be leading the way for mobile displays. AMOLED is not the same as true OLED which provides deeper blacks and bright whites. Even though in an AMOLED display, individual pixels do turn off in the presence of black, the active matrix leaves the transistor film actively on. That's where the term Active-Matrix comes from. So much for AMOLED. It is speculation that Samsung may use SLCD's on their Samsung Galaxy S4 this year, according to a recent article on GSMArena.
rymote said:
hi.. i have an international SGN2 with normal super AMOLED display which is too much in contrast. if you want to have a crystal clear display why not choose true hd ips screen?
sorry my english..
Click to expand...
Click to collapse
winlinmac001 said:
Many don't choose the True HD IPS screen because many have the misconception that AMOLED displays provide a better color gamut, therefore a providing richer colors, accurate RGB, and premium experience. However, this is no longer necessarily the case. True HD IPS Displays have come a long way and are now thought to be leading the way for mobile displays. AMOLED is not the same as true OLED which provides deeper blacks and bright whites. Even though in an AMOLED display, individual pixels do turn off in the presence of black, the active matrix leaves the transistor film actively on. That's where the term Active-Matrix comes from. So much for AMOLED. It is speculation that Samsung may use SLCD's on their Samsung Galaxy S4 this year, according to a recent article on GSMArena.
Click to expand...
Click to collapse
Id prefer sammy go back to LCD's and develop it further, AMOLED just has way to many uniformity issues for those who are not lucky. If sammy can produce a 'backlight bleeding free' SLCD then Im sold, as long as theres a way to increase the color saturation
Is s4 has this kind of issue too? Like mura effect..? I think s4 has too...
Sent from my GT-I9500 using xda app-developers app
Sorry for bumping this thread into 2014, speaking of the Note 4, Samsung seems to have done some interesting software mods, but the hardware is still relatively same behavior when you test the displays using Supercurio's app. It's gruesome to know, but I've been with the AMOELD family since 2011. Have you moved up to the Note 4, EarlZ?
EarlZ said:
Id prefer sammy go back to LCD's and develop it further, AMOLED just has way to many uniformity issues for those who are not lucky. If sammy can produce a 'backlight bleeding free' SLCD then Im sold, as long as theres a way to increase the color saturation
Click to expand...
Click to collapse
winlinmac001 said:
Sorry for bumping this thread into 2014, speaking of the Note 4, Samsung seems to have done some interesting software mods, but the hardware is still relatively same behavior when you test the displays using Supercurio's app. It's gruesome to know, but I've been with the AMOELD family since 2011. Have you moved up to the Note 4, EarlZ?
Click to expand...
Click to collapse
Nope, I did get the Note 3 for my 24 month contract. Same old issues exist black is still problematic (no more black crush though) as you can see white spots the screen if its not displaying something that is totally black.
These AMOLED panels are still in its infantile state, but more like it its pre-teen years undergoing puberty. I'd give it a couple more years for the technology to fully mature.
EarlZ said:
Nope, I did get the Note 3 for my 24 month contract. Same old issues exist black is still problematic (no more black crush though) as you can see white spots the screen if its not displaying something that is totally black.
Click to expand...
Click to collapse
I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
bobandar said:
I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
Click to expand...
Click to collapse
yes, its the problem off one UI dark mode not A50 problems!
try good lock to make ur bar!
Mahdi2000 said:
yes, its the problem off one UI dark mode not A50 problems!
try good lock to make ur bar!
Click to expand...
Click to collapse
That can be but it is completely black amoled on my s9+. Maybe software update can fix it in the future. Not a major bug though, just wanted to know if the problem was common.
bobandar said:
I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
Click to expand...
Click to collapse
Mine is just simply not true black, but I can only see it when I boost the brightness. But to be fair, samsung doesn't really promise a true AMOLED black as they say it's just so it's easier on the eye at night (dark/low light) ambient. But yeah, it'd be better to have a true AMOLED black in night mode.
amrazing33 said:
Mine is just simply not true black, but I can only see it when I boost the brightness. But to be fair, samsung doesn't really promise a true AMOLED black as they say it's just so it's easier on the eye at night (dark/low light) ambient. But yeah, it'd be better to have a true AMOLED black in night mode.
Click to expand...
Click to collapse
Mate, it is true amoled back on flagship devices after s8, i had a true amoled black on my s9+ no matter at what level my brightness was set.
bobandar said:
Mate, it is true amoled back on flagship devices after s8, i had a true amoled black on my s9+ no matter at what level my brightness was set.
Click to expand...
Click to collapse
Well then it sucks. What's the point of having an AMOLED display if the software won't let us have its advantages
amrazing33 said:
Well then it sucks. What's the point of having an AMOLED display if the software won't let us have its advantages
Click to expand...
Click to collapse
Yes , exactly my point
Its named night mode and not dark mode maybe its different
Yep, I agree, however I don't notice any difference depending upon brightness level.
bobandar said:
Mate, it is true amoled back on flagship devices after s8, i had a true amoled black on my s9+ no matter at what level my brightness was set.
Click to expand...
Click to collapse
Yeah its also amoled black on my a7 2018 and a50 except for the normally white parts in the ui but its okay like most of the ui is still pure black its not like the whole screen is grey
There is s little fix guys. See this video
https://youtu.be/Y398_v3DRkI
Theres no large difference in mah consumption between completely dark mode (pixels off) and dark theme.
To me it seems black parts are true black/turned off. On any level of brightness is the same.
No I think Samsung did it intentionally.. because true black is way more susceptible to burn in.. you can't have UI elements being turned off all the time that would result in very bad burn ins to text and Icones..
Still thay made it dark enough so you won't notice it
And another thing it's the opposite of what you said when the brightest is low it turns off and when it's high it becomes very dark gray technically black but not off.
Also you can't design a decent looking gui if all elements are pure black.
Guys try good lock app via which the notification panel can be adjusted to colors we want
baraa_a_awwad said:
No I think Samsung did it intentionally.. because true black is way more susceptible to burn in.. you can't have UI elements being turned off all the time that would result in very bad burn ins to text and Icones..
Still thay made it dark enough so you won't notice it
And another thing it's the opposite of what you said when the brightest is low it turns off and when it's high it becomes very dark gray technically black but not off.
Click to expand...
Click to collapse
That's not how burn in works. Burn in occurs at the pixel level. A pixel that's on all the time will burn at the regardless of the colors of the surrounding pixels (black, grey, or whatever)
felixdd said:
That's not how burn in works. Burn in occurs at the pixel level. A pixel that's on all the time will burn at the regardless of the colors of the surrounding pixels (black, grey, or whatever)
Click to expand...
Click to collapse
Every burn in is different from another.. basically the higher the contrast the worst the burn is
baraa_a_awwad said:
Every burn in is different from another.. basically the higher the contrast the worst the burn is
Click to expand...
Click to collapse
I think maybe you're confusing contrast with brightness? Again, burn-in occurs at the pixel level, when a pixel cannot return to its initial relaxed state, and is not dependent on whether the pixel beside it is on or off.
https://en.wikipedia.org/wiki/Screen_burn-in#Plasma,_LCD,_and_OLED_displays for a very brief primer
bobandar said:
I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
Click to expand...
Click to collapse
Hello, on my galaxy a50, there is a similar effect, only at a brightness close to the minimum, a gray gradient appears, part of the screen becomes gray and part black. When you increase the brightness to about 40 percent, the color is aligned. At the same time, the black color remains black on the lock screen at any brightness.
Man I hate OLED lottery.
Does anyone else have this issue? It's something similar to this:
https://forum.xda-developers.com/oneplus-7t/help/green-tint-issue-oneplus-7t-t3986231
I'm debating if I should exchange it or just keep it, it's only noticeable at low brightness
vwite said:
Man I hate OLED lottery.
Does anyone else have this issue? It's something similar to this:
https://forum.xda-developers.com/oneplus-7t/help/green-tint-issue-oneplus-7t-t3986231
I'm debating if I should exchange it or just keep it, it's only noticeable at leow brightness
Click to expand...
Click to collapse
I have the same effect in original Youtube app. It is just a bad background gradient in the application. Don´t blame the phone....
When I open Messenger with black background and grey status bar at the top of the app in the same brightness level, there is no greenish effect.
I am also having uniformity issues. Very noticeable, unfortunately. As there are no 512GB Ultras available anyway ATM, O will just have to live with it for the moment. Maybe I get used to it...
buddy66 said:
I have the same effect in original Youtube app. It is just a bad background gradient in the application. Don´t blame the phone....
When I open Messenger with black background and grey status bar at the top of the app in the same brightness level, there is no greenish effect.
Click to expand...
Click to collapse
mm weird, I see it in every single app with dark grey background, even in settings (w/Dark mode on), the bleeding is a lot bigger from the top right corner.
EDIT: Just checked the messenger app (FB messenger) and background is completely black so most pixels are off except for the letters and gray search bar but bleeding wouldn't be noticeable.
vwite said:
mm weird, I see it in every single app with dark grey background, even in settings (w/Dark mode on), the bleeding is a lot bigger from the top right corner.
EDIT: Just checked the messenger app (FB messenger) and background is completely black so most pixels are off except for the letters and gray search bar but bleeding wouldn't be noticeable.
Click to expand...
Click to collapse
I've just checked it with Gmail since it is also a Google application and you can notice the bleed when the lights in the room are turned on and I try to cover the top of the phone to see it. After turning the lights off, whole app is equally gray so in my opinion it is just an optical illusion. If I recall well the AMOLED displays use some kind of dimming (tinkering with the frequency) in order to reach a lower point of the brightness that is not noticeable for human eye. Probably this can be seen when covering a gray part of Google apps in a room that has another not so bright light source.
buddy66 said:
I've just checked it with Gmail since it is also a Google application and you can notice the bleed when the lights in the room are turned on and I try to cover the top of the phone to see it. After turning the lights off, whole app is equally gray so in my opinion it is just an optical illusion. If I recall well the AMOLED displays use some kind of dimming (tinkering with the frequency) in order to reach a lower point of the brightness that is not noticeable for human eye. Probably this can be seen when covering a gray part of Google apps in a room that has another not so bright light source.
Click to expand...
Click to collapse
I made a picture. It is showing a 5% gray test pic and supposed to be uniform. It is easy to see and I was kind of shocked when instantly noticing it the first time I was using it in the dark. Settings and many parts of the dark one UI are using grays in that range.
Anybody else? If it is rare, it will be worth pushing for an exchange.
corwin_amber said:
I made a picture. It is showing a 5% gray test pic and supposed to be uniform. It is easy to see and I was kind of shocked when instantly noticing it the first time I was using it in the dark. Settings and many parts of the dark one UI are using grays in that range.
Anybody else? If it is rare, it will be worth pushing for an exchange.
Click to expand...
Click to collapse
I did the same test, I'm attaching a picture of my Note 10+ and the S20 Ultra side by side. Uniformity seems a lot better on the note 10+, however on white background the Note 10+ turns more red when I slightly tilt it while the S20 Ultra seems to shift colors a lot less and still white overall.
Still not sure if it's worth the hassle to return.
Ok, the fact, that it looks very much like mine can be good and bad ?
Could you please check, if is different at 60Hz? For me, it is clearly different.
corwin_amber said:
Ok, the fact, that it looks very much like mine can be good and bad
Could you please check, if is different at 60Hz? For me, it is clearly different.
Click to expand...
Click to collapse
Oh wow, you're right! I set it to 60 hz and QHD+ and uniformity on the gray test got noticeable better, still some green on top right corner and around the punch hole but noticeable less. I love reaaally 120 hz during normal use though.
Thanks for confirming, same here. I wonder, if this is something, that can be fixed in software... And if the rumoured 'dynamic refresh raze' update might change things.
Could please note people check their Ultras displays?
Same here with my s20 more visible at 12hz refresh rate with dark theme
Damn it, ok, then I really hope that it is fixable... Weird.
I am using smiled displays since Symbian Nokias, never had one, where I noticed it so much.
I remember all the Mate 20 Pros with LG screen had this issue buy way worse in some cases
https://www.google.com/search?q=mat...JtXpfSDsL9sQXomrbgDQ&rlz=1C1CHBF_enUS731US731
In some cases they were normal during the first days but the problem evolved until the display was unsusable in low light conditions, hope the same won't happen to our phone during the next weeks.
yeah I don`t have this issue I did the screen test in Gmail and download the app that does all the different colors including gray, at the lowest brightness and at other levels of brightness at 120hz its all uniform.
2003vstrom said:
yeah I don`t have this issue I did the screen test in Gmail and download the app that does all the different colors including gray, at the lowest brightness and at other levels of brightness at 120hz its all uniform.
Click to expand...
Click to collapse
Mine is most noticeable at around 35-40% brightness and with 120 hz but still noticeable with 60 hz while on the note 10+ I can't see any green at all at any level of brightness. I think it's a quality issue and variation of OLED screens but not sure if it would count as "defective". Samsung doesn't do exchanges so it would be a pain to return everything and recorder without the promotions and reservation/pre-order credits. Ugh not sure what to do yet.
EDIT: Btw I tested with gmail and didn't notice the green in the app since it's light gray but as soon as I drop down the notification panel (w/dark mode on) the green is immediately noticeable. It's only with very dark gray that lookd almost black which is what Samsung use for all their apps (settings, calculator, messages, etc.) when dark mode is on. I wish they used true black so pixels were completely off like with facebook messenger.
I am also unsure what to do. I have to say, however, that this is the device that gives me the most uncertainty ever. For this opportunity price I want a good to perfect display. @vwite Don't you think that the dark grays are too bright as well? It wouldn't be so visible otherwhise. I also sent my picture to the 'write the CEO' address and a pledge to be aware of the issue:
https://www.samsung.com/uk/info/contactus/email-the-ceo/ (example: UK)
I will try checking in a store, which will be totally hard because of the light there. Maybe I will just order another one... Or a plus ?
Made another picture 'for the CEO' :silly: and will also attach the source image I showed on screen. To replicate:
- 25% brightness
- Show 5% picture in a dark room
- made picture with an S10+ on full auto
corwin_amber said:
Made another picture 'for the CEO' :silly: and will also attach the source image I showed on screen. To replicate:
- 25% brightness
- Show 5% picture in a dark room
- made picture with an S10+ on full auto
Click to expand...
Click to collapse
Thanks! Please let me know what they say.
Actually I ordered an S20+ now and will most likely just give the Ultra back in the first 2 weeks. Yes, it is a pain, but I really can not stand the screen as is. I am even putting it in its box before I have the plus and using my S10+ in the meantime - the green tint is driving me a little nuts.
I am having a hard time justifying the thickness and weight for a feature I hardly use (amazing zoom) while having an inferior main camera at the same time (focus issues).
i noticed this issue too on my 20+
it seems to be worse some days less bad other days
it also is very dependable on how much ambient light is around - eg is much more noticeable in dark rooms
and yes is an issue with Samsung dark mode that isn't true black but some dark greyish
other then this - all other colours look amazing = so not sure if the screen itself is defective
I do hope there will be a software update that will fix this or make it less visible