Noticed when using light colored wallpapers a vertical line down the middle of the screen and am wondering if my screen is defective.
Never seen anything like it
I have, but not on a Streak. An old IBM Thinkpad I had suffered from a similar issue. With LCD screens, there are microtransistors that control the on/off state of all the pixels in a particular column or row on the screen. In my case, the transistor for one column was stuck in the on state for the color red, thus giving whatever was displayed on those pixels a permanent red cast. On a black background, the pixels would be red, not black. In the case of this Streak, one of the transistors is stuck in an off state, resulting in the line you see in the photo from the OP.
The screen is defective.
Related
Hello to all
As the title says it's another screen defect that this phone have
I have noticed a darker area, which make almost a perfect rectangular shape upper to left of the screen and it is visible only in some circumstances
- screen brightness need to be lower that maximum (the lower it is the higher this defect is visible)
- mostly visible on grey image (for example the market startup) see other images in the links
http://imageshack.us/photo/my-images/85/img0636gb.jpg/
http://imageshack.us/photo/my-images/851/img0635ul.jpg/
http://imageshack.us/photo/my-images/864/img0633u.jpg/
not visible at all on black screen of course but when the screen is off and with a bright light (sunlight of a power lamp) in some right angles I can see some darker dots (looks to be some kind of liquid inside the screen) at the size of 5mm and also this rectangular shape (good eyes need here ) no picture for this because it is not visible with any camera
I wonder how came to this and is any possibilities to fix this such as those screen burners, could these help? or only a screen replacement?
PS: phone have no waranty
Thanks
Screen burns are permanent on AMOLED as far as I know. You'll either have to live with that or do a costly screen replacement.
Ah well, guess I have to live with it, not a major problem but it's looks a bit ugly sometimes.
Just read a bit more about amoled screen burn and it seems that the blue leds are the most that probably get weaker in time and causing this screen burn, and yes this is an explanation why on a blue screen this is almost not visible no mather of the screen brightness
Maybe burn all the screen with a white image, but I believe the result can be worst that this
Thanks
Hey quick Q, i bought a S3 on Wednesday, just noticed that when the screen is green ( or when browsing 0 brightness) that there is a faint whitish pixel that always shows up. Its not visible on black screens, red, purple, or blue.
Anything i can do? Or should i not even bother as its only 1 and how often does the screen go green.
There is no such thing as stuck pixels on AMOLED screens, only defective (either always-on or always-off) pixels or lazy pixels.
While it may sound stupid when related to what I just said, try the app 'Dead Pixel Detect and Fix' and let it run for half an hour.
It will cycle the colors very fast. It will most probably not work but it's worth a try.
If it still appears, try taking it back. Defective screens on a new 600$-handset is not very nice.
ah i see, but can you explain to me why it does not show up on a black screen/background? I just find it interesting and would like to know the reason behind it.
cruisx said:
ah i see, but can you explain to me why it does not show up on a black screen/background? I just find it interesting and would like to know the reason behind it.
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Click to collapse
If it bothers you, just take it back to where you got it from and get it either fixed or see if they can give you a new one.
LCD screens use a white backlight illuminating the whole screen from behind. White includes all visible colors from near-infrared to near-ultraviolet.
To create the different colors they use crystals which are rotated by a power source in the correct angle that only a certain color (e.g. blue) is visible.
LED-Screens [*] and their derivates such as OLED get rid of the backlight and instead of using crystalls, replace each dot with a ligh-emitting diod (LED) which by itself gives light. However LED's have a big deficit; they can only produce one single exact color. So, similar as with the old CRT screens, LED's use multiple colors per pixel [**], these are the RGB colors (Red Green Blue). So each pixel is made up of multiple so-called sub-pixels.
If all 3 are lighted, they mix together to white, any combination in intensity (from 'off' to 'full brightness') gives you millions and millions of colors to display.
(It's easiest to see on large-scale LED televisions, just move very close and you see the 3 tiny 'lamps')
Now your particular issue is that a certain, due to one of several possible issues is not powered off or connected incorrectly; it is lightened at the wrong time.
So the reason it only shows at certain combinations is, that at other combinations you cannot see it due to the difference in color being too marginal or the other LED's also being off.
While it's unnerving, these issues keep arising during production. One has to keep in mind that one such small screen is made up out of thousands of individual light sources which can each be triggered individually to form millions of different colors.
Usually quality-control should get rid of such screens, but sometimes one slips through. I'm not sure what Samsung's standard for the S3 in regard to maximum defective pixels per inch or unit is, but you can (and should) always try to get it replaced.
[*] A lot of cheapskates sell LED televisions where in fact a normal LCD panel is built-in but they refer to the backlight source which in their case (and most other current productions) in fact is an LED source. It has nothing but the name in common.
[**]
This is not entirely true since structures such as active-matrix OLED (AMOLED) share LED's between pixels to cram a higher pixel densitiy in the same physical size.
d4fseeker said:
LCD screens use a white backlight illuminating the whole screen from behind. White includes all visible colors from near-infrared to near-ultraviolet.
To create the different colors they use crystals which are rotated by a power source in the correct angle that only a certain color (e.g. blue) is visible.
LED-Screens [*] and their derivates such as OLED get rid of the backlight and instead of using crystalls, replace each dot with a ligh-emitting diod (LED) which by itself gives light. However LED's have a big deficit; they can only produce one single exact color. So, similar as with the old CRT screens, LED's use multiple colors per pixel [**], these are the RGB colors (Red Green Blue). So each pixel is made up of multiple so-called sub-pixels.
If all 3 are lighted, they mix together to white, any combination in intensity (from 'off' to 'full brightness') gives you millions and millions of colors to display.
(It's easiest to see on large-scale LED televisions, just move very close and you see the 3 tiny 'lamps')
Now your particular issue is that a certain, due to one of several possible issues is not powered off or connected incorrectly; it is lightened at the wrong time.
So the reason it only shows at certain combinations is, that at other combinations you cannot see it due to the difference in color being too marginal or the other LED's also being off.
While it's unnerving, these issues keep arising during production. One has to keep in mind that one such small screen is made up out of thousands of individual light sources which can each be triggered individually to form millions of different colors.
Usually quality-control should get rid of such screens, but sometimes one slips through. I'm not sure what Samsung's standard for the S3 in regard to maximum defective pixels per inch or unit is, but you can (and should) always try to get it replaced.
[*] A lot of cheapskates sell LED televisions where in fact a normal LCD panel is built-in but they refer to the backlight source which in their case (and most other current productions) in fact is an LED source. It has nothing but the name in common.
[**]
This is not entirely true since structures such as active-matrix OLED (AMOLED) share LED's between pixels to cram a higher pixel densitiy in the same physical size.
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Click to collapse
yes
So i just bought an S3 and there is a pixel on the edge of the screen that is coloured bright on low brightness and coloured black on high brightness.
I did the *#0*# test and while it was not visible on red and blue background, it was visible on green background as a black dot.
I mean if it was a dead pixel, it should always appear as a black dot instead of appearing white on low birghtness right?
It doesn't look like a dead pixel, but it might be the green subpixel that does not work properly (although this does not explain the low/high brightness stuff). I remember that I had a stucked pixel on an old lcd and I used a java program to unstuck it. After a search I found that are equivalents for android, like https://play.google.com/store/apps/details?id=com.htc.chris.blackspotdetect&hl=en . Take this solution with a grain of salt, it doesn't always work and also bear in mind that the screen has a lifetime, do not overuse it.
thanks for your comment. i'll just try to be less ocd about that point on screen.
I just got a new Z2, I noticed there's a visible array of little dots on the screen (or glass) when the screen is off or displaying a black image under artificial cold white light.
Is this normal on the device or should I get an exchange?
It's my first IPS display, I come from an AMOLED world.
http://oi60.tinypic.com/2dv4hmu.jpg
I think that you see something like this if am not wrong. And if you see this, i will just tell you its normal.
This thing is called digitizer grid, on some phone are more visible, on some phone are well hiden, anyway, any phone out on the world have this.
Is anyone experiencing image retention issues with their Xperia 1? I've noticed that using Always on display I can see an imprint of the clock on the screen for a few seconds after unlocking the phone.
RaiderX303 said:
Is anyone experiencing image retention issues with their Xperia 1? I've noticed that using Always on display I can see an imprint of the clock on the screen for a few seconds after unlocking the phone.
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Click to collapse
it's weird why is it changing place, how long is the mobile?
The burning you can find on OLED panel is due to the difference in life span of the subpixel. Blue ones wear 2 to 3 times faster than red and green ones. That's why when you always have a black bar on the bottom due to nav button, or in the top due to the info bar, one year later when you turn all the screen white, you will see that the top and bottom bars are whiter and the middle yellowish (more red and green power than blue).
It's permanent, and can't be cleaned by a color strobe. The only workaround, if the wear is homogeneous, is to change the color tint to correct all the screen.
Also to prevent this, best is to avoid blue wallpaper since it will accentuate the wear of the blue oled subpixel.
Now about the always ON display, it's moving regularly to avoid the wear of the blue oled (white display is equally using blue, green and red) only in one specific area, it shouldn't burn the screen (not like a Coyote app on the S7 edge of a friend).
But here it's another thing, like a long response time of the pixel, since it's not permanent and just disappear in few seconds, so it's not a screen damage. I do not have it, but I don't use the Sony launcher, maybe is it just an animation?
When I power on my phone, the always one disappears for half a second displaying black screen then the wallpaper appears.
I've had zero issues with mine.
charlatan01 said:
I've had zero issues with mine.
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Click to collapse
Ditto
No issues
what you're telling happened to me on some tested Samsung phones (Note8/ 9 S9 etc...)
Mine looks better every time