anytime I rotate my s2 in the notifications area I see a faint line that appears on the sides of the screen (usually 2 lines, one on each end, running parallel in respect to the orientation of the screen), which disappears slowly after a couple of seconds. is this a fault? or normal with these AMOLED displays?
mine does this too, as well as many other sgs2's. It's more of a ghosting effect rather than banding. I say it's normal and just a drawback of the super amoled displays.
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Moving to Q&A
so, pretty much all s2s are affected because of the super amoled plus displays right?
KayvinM said:
mine does this too, as well as many other sgs2's. It's more of a ghosting effect rather than banding. I say it's normal and just a drawback of the super amoled displays.
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I'm not an expert but going by personal experience I would say yes. Although I have only noticed it happen when the brightness is low. Personally it doesn't bother me much.
i agree, it only at low brightness you see it along with yellow tint on left, predominantly on lower left (right-triangle shape)
this has to be software related
does anyone else have an explanation for the banding that appears and disappears?
Related
There are a few threads out there that have touched on this issue but none as far as I can see that deal with it directly.
The problem comes when you display a pure black screen in low light conditions. It shows that the AMOLED screen is actually grey / blotchy / cloudy instead of being pure black. Initially I thought mine had fingerprints or smudge marks on it, until I realised they were behind the screen. I guess I might have got a phone with a screen that was replaced, but the amount of people who have also reported a similar issue leads me to believe that it might be a manufacturing default? The blotches / clouds on the screen dont change, but exhibit a random formation as one would expect from a defect. It is also possible to see a very faint outline of light running along 3 edges of the screen.
Naturally this is a situation that doesnt reveal itself very often. But I as I use my phone a lot at night, especially reading ebooks or watching films, you start to notice it more and more where you have large expanses of empty black screen.
What I would like to know is how many people have got screens that exhibit this behaviour and how many of you have sent them in for service or had them replaced?
Is it a common issue and something that is to be expected from this type of screen?
You can test if yours has this problem using 'Screen Test' (its free) from the market place. It cycles through solid colours and patterns every time you touch the screen.
Just do it in bed with all the lights out P), give your eyes a few seconds to adjust and see what your screen looks like displaying pure black.
I'm very interested in everyone's experiences and any input or information you have.
Thanks everyone in advance!
ps: I came from a ZTE blade (OLED) which has a uniformly dark grey background when displaying pure black. I kinda expect this as it is a budget phone (albeit with a better than budget screen), but I didnt expect the SGS2 to be quite as bad.
Use "screen adjuster" from the market and set contrast to -60
i have never seen this black low light screen defect. but i am asking you people if any of you have noticed that ugly blurry shadows which are perfectly visible with low light, on white backgrounds especially. they look like marks above the actual display and make high quality images look like low resolution.. it is annoying as hell..
I have this. Noticed it one night when my phone was switched off and charging.
Sent from my GT-I9100 using XDA App
I also have this, noticed the first evening i used the phone...you can notice this during the screen wake delay, or when in a call if you cover then uncover the proximity sensor...don't know if it's a defect but sure it bugs me, i know many won't notice it and will say they don't have this...i will add that if u look carefully to the screen dimmed at lowest brightness in a low light (buy not dark) environment, like early morning, you'll see some "interferences" behind the image, also the darker/yellower left half screen is still visible in these conditions
These things shouldn't be there in a 500€ phone
Sent from my GT-I9100 using XDA App
Thanks for the feedback already.
@elmerendeiro: I have also noticed some 'interference' lines on my phone from time to time. I did a bit of research and it seems when your phone's brightness is set around 25 - 30% it picks up interference from either the wifi or 3g radio. Notch the brightness either above or below this level and you wont see it anymore.
I agree with you when you say we shouldn't be having these problems on such an expensive phone.
It bugs me too - if it wasnt for this i'd have to say it would be an amazing phone
Might give the Samsung service center a call and see if its something they're aware of and if they are replacing screens with this problem?
Hello,
Im Using Amoled Smartphones since the Galaxy (i7500). They all were always showing at 100% Brightness for Black parts of a picture a true Black like the Display is OFF.
If you put the Brightness to 100% and go to an complete Dark Room and open an Black Picture you see some Gray/Yellow Tint on the Screen. You can compare this good by locking the phone to see the Screen OFF and than unlock it to view the Black Picture again. You should see a huge difference. Hope to hear from your experiences.
I've seen that already on the S1 when abusing it a a nightstand clock.
Best guess I've heard is that the (AMO)LED screen leaks some luminosity to other pixels in the background which is then visible as a very faint glow.
However I rather believe that the AMOLED are not truely off but rather get some leak voltage and thus have a very-very-very faint glow (like one photon per second xD )
That would explain the black spots most people seem to mind on AMOLED when on minimum brightness with a black screen; they are truely off or without insufficient leak voltagage (LED's requie a minimum voltage to work).
AMOLED production is somewhat complicated (very thin layer of silver as a power source and a control-layer) so I wouldn't be surprised if the above is true.
Nothing is perfect, especially not a rather new technology.
What else did you expect from a backlit display.
jbadboy2007 said:
What else did you expect from a backlit display.
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It's not backlit is the point.
Correct me if im wrong here but amoled is, by design, not backlit.
Sent from my LG-P920 using xda premium
Yeah so I was wondering why it does this little/ hard noticeable yellow/gray tint on a dark room...
There is no Backlight... Unfortunely i Sold my Galaxy S2 so I cant compare it.. But im Sure it wasnt like this
I have this on my gsiii and also on the Gnote... I think is due to the pentile screen
I had this on my Fascinate but realized it wasn't a big issue. Definitely more noticeable on my Gnex but it also has more pixels so that could be why you see more light. I wouldn't call it a problem because the majority of the time it's absolutely unnoticeable. Each pixel has so have some sort of voltage to be ready to react to changes. Turning off/on completely each time light is needed might waste battery.
P.S. I'm noob at displays but that's my theory.
Zacisblack said:
I had this on my Fascinate but realized it wasn't a big issue. Definitely more noticeable on my Gnex but it also has more pixels so that could be why you see more light. I wouldn't call it a problem because the majority of the time it's absolutely unnoticeable. Each pixel has so have some sort of voltage to be ready to react to changes. Turning off/on completely each time light is needed might waste battery.
P.S. I'm noob at displays but that's my theory.
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I was curious about this issue as well. It's my understanding that OLEDs do not produce any light in their inactive state.
Regarding your theory, I wonder if it's similar to plasma displays. Even though plasmas are capable of true black (they do not use a backlight) The individual plasma cells have better response times if they aren't fully discharged on blacks. So they have a faint glow that comes from the low power they are using to keep the pixel charged up and ready to go when a color change is needed.
This actually costs a little power though, rather than saving it. So if thats what they are doing, it is for screen quality reasons so that movies and other things look better.
Did some Googling and I couldn't find much information, but there is talk of delivering pre-charge voltage to the OLED pixels to improve response times. So it could be that they are indeed similar to plasma displays in that respect: Capable of true black, but the benefits of not using true black are too good to pass up.
Are you SURE the picture is actually true black? By that i mean pure 100% black in an uncompressed image? If not then you cant expect the phone to display true black. A JPEG of black may not be enough.
My screen it totally off when displaying true black.
I can confirm the screen showing a faint glow on S3 with a true black screen.
Use Firefox with Fullscreen extension (Chrome and the default browser don't seem to have fullscreen mode yet) and go to http://d4f.pf-control.de/black.html
That's rendered on the phone so we can expect it to be the blackest black an app can produce, however in a (very) dark room you'll see a very faint glow coming from the screen and you'll be able to see the black spots (truely black) that people keep complaining about.
The theory about it being a precharge voltage does indeed sound plausible since LED's have a certain reaction time which unfortunately cannot be compensated by e.g. Overdrive as is used in LCD screens.
Note that the S3's "black" is still far better than any LCD.
No mine is still jet black, no light at all.
Go to a COMPLETELY dark room and make sure the screen is actually turned on when on the website (not timed out).
Then take a long-exposure photograph of your phone (still make sure the screen is turned ON!).
I don't have a long exposure camera, but the room is completely dark and my eyes have adjusted, there is no light.
All sgs3 ( as sgs2) screens emit a very week glow on a black pictures ( with the screen on )
Sent from my GT-I9300 using xda premium
It would seem to me that the 'ink spots' many have are not overly dark spots at all, they are what the screen should be. My screen emits no visible light when displaying a true black image, at least nothing my eyes can see, even at the edge of my vision field where light cell are most sensitive. My screen is on maximum brightness.
My screen has no patches, no streaks, no spots, no pink or excessively blue tint. I guess i have a screen thats as near to perfect as they get.
yes there is very faint glow indeed making the screen a bit greyish instead of pitch black
Excuse me if I am being naive but where is real life use would this ever be a negative impact?
jfenton57 said:
Excuse me if I am being naive but where is real life use would this ever be a negative impact?
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no negative impact, but still raises a question "why so?"
jfenton57 said:
Excuse me if I am being naive but where is real life use would this ever be a negative impact?
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I don't think anyone is trying to paint it as an issue that needs to be resolved. It's more of an odd technical mystery rather than a real problem. The blacks are still extremely deep on an AMOLED, just like with Plasma it puts LCD to shame in that department.
I read through much of the threads regarding the N10 display. The light bleed on mine is there, but it doesn't bother me.
What I do notice especially on a white background is the top (landscape) of the screen seems to be slightly darker along the entire top edge. This seems to extend down about 1/2 and inch. It is especially noticeable with the kindle app when the screen brightness is high.
Anyone else notice this or are my eye just getting old?
I do a lot of reading on my tablet so the sharper display (replacing a Xoom) is certainly a big plus. The dark band is more of a distraction when reading especially when I'm thinking about it while reading!
mgerbasio said:
I read through much of the threads regarding the N10 display. The light bleed on mine is there, but it doesn't bother me.
What I do notice especially on a white background is the top (landscape) of the screen seems to be slightly darker along the entire top edge. This seems to extend down about 1/2 and inch. It is especially noticeable with the kindle app when the screen brightness is high.
Anyone else notice this or are my eye just getting old?
I do a lot of reading on my tablet so the sharper display (replacing a Xoom) is certainly a big plus. The dark band is more of a distraction when reading especially when I'm thinking about it while reading!
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I have slight light-bleed which does not bother me but nothing like this mate.
mgerbasio said:
I read through much of the threads regarding the N10 display. The light bleed on mine is there, but it doesn't bother me.
What I do notice especially on a white background is the top (landscape) of the screen seems to be slightly darker along the entire top edge. This seems to extend down about 1/2 and inch. It is especially noticeable with the kindle app when the screen brightness is high.
Anyone else notice this or are my eye just getting old?
I do a lot of reading on my tablet so the sharper display (replacing a Xoom) is certainly a big plus. The dark band is more of a distraction when reading especially when I'm thinking about it while reading!
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I think that is only present on stock ROM, I had noticed it when I first got my tablet but been on AOSPA for months and haven't seen it since I left stock.
RoloRacer on RootBox 4.2.2
mgerbasio said:
I read through much of the threads regarding the N10 display. The light bleed on mine is there, but it doesn't bother me.
What I do notice especially on a white background is the top (landscape) of the screen seems to be slightly darker along the entire top edge. This seems to extend down about 1/2 and inch. It is especially noticeable with the kindle app when the screen brightness is high.
Anyone else notice this or are my eye just getting old?
I do a lot of reading on my tablet so the sharper display (replacing a Xoom) is certainly a big plus. The dark band is more of a distraction when reading especially when I'm thinking about it while reading!
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I have this too and I suspect a lot if not all do too. There was a big thread on this a while back.
Sent from my Nexus 10 using xda premium
Are you guys aware that there is a gradient shading that is naturally there? It is most noticeable on the initial setup screen, it gets gradually darker. Download the light bleed app and go through the solid colors to test for consistency of the backlight.
Hello, I own a i9100 and I have some burn-ins at the top of the screen that replicate some buttons of a browser or something, and some burn-ins at the bottom as well. I have read that leaving overnight an app that's constantly switching colours, with full brightness, could help a bit on that. I also read that leaving a blank screen (white image) on the same conditions (overnight, full brightness) would help as well. My question is, how true these both things are? I don't want to end with a bigger problem than the one I currently have. The burn-ins are most viewable at Blue, Red, and Black screen colors.(like if I put a background with one of those colors on it)
Never had any of these on my S2,but from my experience with the galaxy s plus,these tricks won't work.None will to be honest.It's permanent.This shows how immature amoled technology is.Learn to live with it or replace the screen if that bothers you much.
what a sign you got there...
Lucky you. Mine is not THAT noticeable if you're using it normally, but as soon as you open something with a plain color on it, the burn in shows itself on all its glory. So right now you can't tell if leaving the white image all the night or the thing switching colors will damage my screen more?
mwehehe
Well,back then when I tried every method you described above on my i9001,I didn't noticed any improvement nor any further damage.Even after running those for 10h+.So I assume it's safe.Can't say the same for the S2 though,have no problems with it.
I have a new GS9+ (SD, unlocked) which I love.
BUT, does anyone else notice that when viewing the screen anywhere greater than ~10 degrees from perpendicular, the screen turns blue-ish?
The blue-filter option does not seem to affect this effect.
Color shift is a inherent issue with AMOLED displays.
GibMcFragger said:
Color shift is a inherent issue with AMOLED displays.
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Perhaps, but on my GS7e it's unnoticeable. When doing a side by side with the GS9+ and GS7e the older screen keeps it color at an angle... the new screen does not. :-|
First world problems.