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Topic # 70062 18-Oct-2010 10:02 Send private message

I have had my SGS for about three months. I have had it set on max brightness and also set up so that screen stayed on while on the charger - which is all day when I am at work. This is because I love it and want to see it in all its bright Super AMOLED glory.

Over the weekend I noticed very faint yellowy discolouring in the lower RH corner of the screen where the 'Applications' icon is on the home screen. When looking at screens other than the home screen, there are four very faint yellowy squares that correspond to where the four white squares are in the Applications button of the home screen.

I'm pretty sure this is burn-in so I have activated auto-brightness, shortened the screen time-out and turned off the 'screen on while charging'.

The yellow is not too bad and most people may not notice it - but it's there and its scary.

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  Reply # 393072 18-Oct-2010 10:24 Send private message

From Wikipedia:

Plasma displays are highly susceptible to burn-in, while LCD-type displays are generally less so. Because of the more rapid luminance degradation of current organic compounds used in OLED-type displays, OLED is even more susceptible to burn-in than plasma.[citation needed] In addition, the wide variation in luminance degradation with OLED [1] will cause noticeable color drift over time (where one of the red-green-blue colors becomes more prominent).
 

Yeah it looks like these screens can get burn in quite easilly afaik. 




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  Reply # 393073 18-Oct-2010 10:25 Send private message

There is an application in the Market called 'pixel check' that loads the complete screen with the 3 primary colours and black and white in sequence. While it doesn't offer a cure it may assist in determining if any of the pixels (or particular primary colour) have become 'lazy'.
While I'm not really familiar with super amoled I guess it it is using a technology where the pixel generates its luminousity (like a plasma TV) as opposed to blocking a backlight (like an LCD TV) may be more susceptible to some sort of afterimage.
While I have loved the look of the SGS's screen (particularly in sunlight) when I have seen demos, this may end up being another hardware 'difficulty' to go along with the gps and the memory problems.

Edit:  +1 to the above comments.  Guess I should learn to type faster.




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  Reply # 393074 18-Oct-2010 10:25 Send private message

Ouch. Be interesting to know if it was a temporary effect and disappears if you reboot/reset the screen like LCD TVs.




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  Reply # 393085 18-Oct-2010 10:36 Send private message

Interesting, not heard a single other GS user complain of this (and I'm a frequent browser of the XDA and Androidforums GS subforums).

Strange...




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  Reply # 393100 18-Oct-2010 11:25 Send private message

Have any of you noticed that swiping the notification bar no longer changes the brightness in Froyo?




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  Reply # 393103 18-Oct-2010 11:29 Send private message

It does still change the brightness, but you need to hold your press on the bar a couple of seconds. Makes accidentally changing brightness less frequent.




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  Reply # 393106 18-Oct-2010 11:33 Send private message

Ah I wondered why it wasn't working. I felt like a dick when trying to show someone that feature.




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  Reply # 393119 18-Oct-2010 12:16 Send private message

NZtechfreak: It does still change the brightness, but you need to hold your press on the bar a couple of seconds. Makes accidentally changing brightness less frequent.


Yes took me a day or two before I worked that one out.




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  Reply # 393155 18-Oct-2010 13:35 Send private message

If it's there with the screen test, get a blank screen, maybe a flashlight app, turn Standby to off and put it on the charger, leave it on a white screen for about 12-24 hours, that usually fixes most LCD/Plasma screens I get in with burn in :)





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  Reply # 393159 18-Oct-2010 13:39 Send private message

vinnieg: If it's there with the screen test, get a blank screen, maybe a flashlight app, turn Standby to off and put it on the charger, leave it on a white screen for about 12-24 hours, that usually fixes most LCD/Plasma screens I get in with burn in :)




... and then the whole screen slowly turns slightly yellowy, rather then just the part I have now, so that the yellowy bit I have now won't be noticeable?

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  Reply # 393310 18-Oct-2010 19:43 Send private message

eracode:
vinnieg: If it's there with the screen test, get a blank screen, maybe a flashlight app, turn Standby to off and put it on the charger, leave it on a white screen for about 12-24 hours, that usually fixes most LCD/Plasma screens I get in with burn in :)




... and then the whole screen slowly turns slightly yellowy, rather then just the part I have now, so that the yellowy bit I have now won't be noticeable?


Sort of, you get the idea, it should burn in white, so it won't be noticeable and hopefully un yellow it. There could be a change that the damage might be the touch screen layers in between the amoled separating, in which case that'd be a warranty job and one of the first Galaxy to experience it




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  Reply # 393452 19-Oct-2010 08:32 Send private message

I'm assuming that since you've had your SGS for 3 months it is a parallel import which will make a warranty claim just that little bit more odious. But obviously worth pursuing for a handset of this value, and supposedly Samsung's flagship model.
It will be interesting to see if your problem is covered under warranty or is just considered fair wear and tear for this kind of device. I know that when early plasmas were more susceptable to burn in that the manufacturers decided it was not a defect in manufacture but just a fact of life for that particular technology. Most plasma owners manuals carry a warning about long term static images, I wonder if your phone's OM has the same.




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