After a year of usage, through using the antutu test app for LCD I noticed that the pixels on top edge of the screen are brighter than the rest. It's probably because of the black notification bar.
Can other users with super amoled NS check this and see how their panel holded up? The best way to check it is with a plain gray or blue image.
Thanks
neXus S i9020T - AOSP+ - SG Kernel - 100/1320 MHz
I've the i9023 myself, but current (possibly future, too) OLED panels degrade unevenly. Whites and blues use the most power and lower the brightness after prolonged use more so than reds and blacks (with blacks effectively turning off the pixels and draining little to no power and don't effect brightness).
These kinds of effects are likely going to be more prevalent now that some years have passed since the first OLED displays have appeared. For comparison, LCDs use a backlight behind the screen which uses the same amount of power between white and black, though blacks look a little grey. As a result, there is even brightness fade.
Related
Okay, so, one of the things that's really disappointed me with some recent Android tablets I've tried out has been the screen's color temperature and contrast:
1. The Samsung Galaxy Tab 2 7" and Toshiba Excite 10 all had very cold screens, with very blue-ish whites. Also, contrast was poor on both, so reading ebook on them with black text on a "white" background was unpleasant.
2. On some Primes I tried, whites were a dingy yellowish color (although I'm not sure that's because of the temp or some other issue), while some were a nice neutral-to-warm color.
3. The Toshiba Excite 7.7 screen varies depending on how much black/dark colors are being shown, clearly a power-saving feature. On screens with a lot of whites, the temp is made much coolor and contrast is reduced. On screens with a lot of darker colors, temp is warmer, contrast is increased, and whites are much less blue.
So, what I'm wondering about the Nexus 7 is this: what's the apparent color temp? Are whites "white," or are they yellow-ish (warmer) or blue-ish (colder)? And how's contrast, specifically black text on white?
I know I'll get the darn thing in a few weeks, but in the meantime I'm not finding any reviews that say anything other than "great screen for the money." And unless someone's being really careful, it's tough to show screen colors and temperature in pics and video...
i just wondered how the battery consumption is on white compared to amoled screens? since i had a gs2 before i've been hesitating to choose white backgrounds to not to drain my battery.
I don't think colours matter on LCD screens, so black won't save any battery either
Exactly. Black colors will conserve your battery on AMOLED screens, but not LCD screens.
Sent from my Nexus 4 using xda premium
so there won't be any difference?i believe in daylight time it's more reasonable to choose lighter colors than darker to see the screen.
Simple answer: There is no affect on battery life. It will drain just as fast on white as it will on black.
Basic screen technology lesson incoming...
The image displayed on a regular LCD screen (aka most phones) will not affect your battery life. Only AMOLED screens (aka most Samsung phones) are affected by this phenomenon because the image is also the lightsource.
Battery life with LCD screens is affected by the backlight brightness. The backlight covers the whole back, is always white, and only shines through the LCD to allow you to see the image. Turn up the brightness, consume more power. Turn down the brightness, consume less power. Has nothing to do with the image on the screen.
Amoled screens do not shine through anything, the image they produce is also producing the light. That's why blacks use no power (off), and whites use max power (all on).
The end.
OLED looks OK but I never liked it on my S2 and the S3 looks the same TBH.
OLED looks green/bluish in tone. Whites are not as crisp as LED either.
Also OLED consumes MORE on White than LED on White at the same light output !
Not sure if it's visible but I'm fairly certain that I can spot this. Check the attached gif. Notice how the lower three thumbnails lag while scrolling . This thing is slowly making me insane.
Any suggestions? Phone is pure stock, no modifications, miui 11 global 11.0.1.
yes, i can also spot wavy motion when using Instagram in dark mode with brightness low.
the edges of images give some black wavy shades on scrolling same occurs when we use in direct sunlight color are too sharp on full brightness under the sun
I think you speak about the big AMOLED weakness, that's "normal" and can't be fixed...
It's normal for AMOLED displays and VA Lcd displays.
when its complete black pixels turn off and it takes a while for them to turn on again and show the new color
less visible in higher brighnesses
Yeah i have this problem any solution to fix?
Its very simple. Because we have an OLED display the individual pixels can and will turn off to display a true black. But when that black pixel that was turned off needs to change color to for example green, the pixel will have to turn back on again. And this takes a few miliseconds (probably more than 15ms, but thats just my opinion) thats why you see ghosting/trail. We cant do anything about this. Better have true blacks then less ghosting and greyish blacks on other panels like LCD.
Hey, I've recently noticed small dark dots on my screen. Few of them are in a left corner, but these are only visible in a really dark room, on a really dark grey screen and on the lowest possible brightness. However, there is one dot in a center part of the screen which is more visible than the other ones (it is still visible at approx. 50% (or even higher) brightness on a dark grey screen). This one particular dot is newer than the corner ones. I couldn't find a lot of information about this issue, but from what I've found I learned that this is a common issue with some AMOLED displays. Is it true?
sntr37 said:
Hey, I've recently noticed small dark dots on my screen. Few of them are in a left corner, but these are only visible in a really dark room, on a really dark grey screen and on the lowest possible brightness. However, there is one dot in a center part of the screen which is more visible than the other ones (it is still visible at approx. 50% (or even higher) brightness on a dark grey screen). This one particular dot is newer than the corner ones. I couldn't find a lot of information about this issue, but from what I've found I learned that this is a common issue with some AMOLED displays. Is it true?
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Sounds to me a lot like dead pixels
My Mi 9T also has this. It's not dead pixels, but rather unbalanced pixels due to manufacturing tolerances on (AM)OLED panels. On lower brightness some pixels may be sligthly dimmer/brighter than others as it is difficult to drive an OLED panel evenly on low power. This is also why the screen can seem to flicker on low brightness, because PWM is used the pixels rapidly turn on/off to keep image quality acceptable on low brightness. Without it the artifacts would be even more visible.
Every OLED screen will have this to some degree, but it is more noticeable on non-flagship phones because they tend to get the panels which are not good enough for flagship priced phones.
sanchaz12 said:
My Mi 9T also has this. It's not dead pixels, but rather unbalanced pixels due to manufacturing tolerances on (AM)OLED panels. On lower brightness some pixels may be sligthly dimmer/brighter than others as it is difficult to drive an OLED panel evenly on low power. This is also why the screen can seem to flicker on low brightness, because PWM is used the pixels rapidly turn on/off to keep image quality acceptable on low brightness. Without it the artifacts would be even more visible.
Every OLED screen will have this to some degree, but it is more noticeable on non-flagship phones because they tend to get the panels which are not good enough for flagship priced phones.
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Thank you.
Recently I switched to Evolution X custom rom on my Galaxy A205F. It works amazing, there are no problems with optimisations.
But the text and some things are too bright. I play Battle Royale games and the health bar got burnt into the screen.
Is there any fix for this like OneUi had? So that this doesn't happen at other parts of the screen.
Keep brightness at 50% or less.
Avoid using in direct sunlight*.
OLEDs have a limited lifespan.
Less brightness/time on means a longer lifespan.
Blues OLEDs have the shortest lifespans while the lower wavelength energy reds the longest. Any type of blue LED or OLED have notorious shorter lifespans than their lower light energy red counterparts.
However to generate the color white the blue pixels operate at a higher output in comparison to other colors.
So white produces the most overall damage as well the most damage to the blue pixels.
Limit the length of time the same static image is present especially whites and blues.
Use dark mode and darker wallpapers, minimalist icons packs with more red and less whites/blues.
Get rid of perpetually displayed icons on the header bar; use a pull down style if possible.
Rotate the position of widgets and icons occasionally if possible.
*it's not just the OLED semiconductors in the display but thousands of semiconductor that drive them. All can be damaged by excessive temperatures and their heat sinking capacity is limited. A display operating at full brightness in direct sunlight on a hot running device can damage a display.