with super amoled, if you use a black bg those pixels are just shut off and can save you some battery life. But the SLCD isn't as easy to see in the sunlight and i was curious if there is a difference in battery juice consumption with a white bg. Even black has to be luminated by the screen, not shut off pixels like S-AMOLED. Is there a difference between black n white on SLCD's battery drain?
I'm looking for a more technical answer with reasoning rather than "just try em both and find out".
White would be easier to see in sunlight without having to turn up the brightness past 25%.
Please don't quote me on this but I believe the difference in battery usage would be very negligible. It does take less power to display a black LCD screen than a white one but not enough to provide any noticeable difference in battery life like it does on AMOLED devices.
connerrs said:
Please don't quote me on this but I believe the difference in battery usage would be very negligible. It does take less power to display a black LCD screen than a white one but not enough to provide any noticeable difference in battery life like it does on AMOLED devices.
Click to expand...
Click to collapse
Thanks. I did just remember about a cyanogenmod setting to filter the color of the screen and it quote "potential battery saver". Im not sayin battery life is an issue, just curious on knowing the differences in power consumption by color. But like u said, its probably very minimal tho. My 2 past devices were S-AMOLED and I didn't bother with predominantly white backgrounds because it actually made a difference. Time to be able to enjoy the entire spectrum on SLCD without worry! Haha one of the few benefits of LCD
Sent from my PG86100 using XDA Premium App
I think it might use more power on LCD screens. Or, at least, I remember reading that. However, back on my Hero, I tried the effect and it seemed to use the CPU more to render the effect. The phone got slower while in red, blue, etc. I think it is really only for AMOLED screens. Phones using that type of screen benefit a lot more. But I am most likely wrong. It has been a long time since I read up on this tweak.
Sent from my iPhone with the bigger GeeBees.
notasimpleway said:
I think it might use more power on LCD screens. Or, at least, I remember reading that. However, back on my Hero, I tried the effect and it seemed to use the CPU more to render the effect. The phone got slower while in red, blue, etc. I think it is really only for AMOLED screens. Phones using that type of screen benefit a lot more. But I am most likely wrong. It has been a long time since I read up on this tweak.
Sent from my iPhone with the bigger GeeBees.
Click to expand...
Click to collapse
that sucks that the phone becomes sluggish, but then again it was the hero which is 1/4 the phone the 3D is...
also, i'm trying to make sense of it being for AMOLED screens, cuz the pixels are individual LEDs (or so i think) which are on/off individually. but LCD is Liquid.Crystal.Display, which to me makes more sense to render the entire display a certain color... i dunno, probably talking outta my a$$ but hopefully someone with a definite answer can chime in..
thanks for all the info & opinions from you guys, i feel we're getting closer
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?
Do you have such stains? I hear this is normal among AMOLEDs.
welcome to mass produced (aka economically viable) OLEDs...
Some patterning or colour patching is inevitable even from new. Blue or Grey backgrounds tend to show patches up more. Very low brightness shows a greenish cast on the left of the screen too.
It took more than a decade before LCDs could be produced in volume with a very low dead pixel yield.
We have a dozen GS2s at work and they all have minor screen issues. From new. They do get worse or even change position over time (many months) as the pixel level elements shift in luminosity.
Also note that if the phone is warm, the effect lessens.
LenAsh said:
welcome to mass produced (aka economically viable) OLEDs...
Some patterning or colour patching is inevitable even from new. Blue or Grey backgrounds tend to show patches up more. Very low brightness shows a greenish cast on the left of the screen too.
It took more than a decade before LCDs could be produced in volume with a very low dead pixel yield.
We have a dozen GS2s at work and they all have minor screen issues. From new. They do get worse or even change position over time (many months) as the pixel level elements shift in luminosity.
Also note that if the phone is warm, the effect lessens.
Click to expand...
Click to collapse
Thank God I don't have dead pixels. At least this patch I got is visible only on dark-gray / medium-light (so-to-say, idk) brown. I'd rather have that than dead pixels .
Actually, if I start Screen Test, the patch is visible on ALL colors. On blue/red/green, it is less visible. On white, it is most visible. Also, when displaying full whites, the color is not homogeneous. Vertical and horizontal lines seem to be present ALL ACROSS the screen. These lines are visible on white, yellow and such colors.
At least I don't have ghosting effect and the whites are actually white, not yellow - as it was on Gingerbread (yeah, software problem, eh?).
So... the patch appeared to have vanished after running the fix (which rapidly ****s four colors) for half an hour, because the screen was a bit warmer... and as it cooled down, the patch has shown its face again. Oh well...
the galaxy note and s2 super amoled screens are prone to burn ins, very common, you need to eliminate risks involved.
Turn off auto brightness, lower the brightness level, shorten the time youre screen stays awake for, and if youre using themes, avid the blue themed ics ones, although they look nice, the blue themes are one of the biggest culprits of the burn in issue and before ya know it youve got a battery image burnt in.
i notice it looks like you have a blue theme or something, my mate had same issue, what can ya do, its a pain and well probably all suffer it, whereas htcs dont have the issue, they just suffer dead pixels a lot, but hey, id soone have slight burn in than dead pixels i guess
graemeg said:
the galaxy note and s2 super amoled screens are prone to burn ins, very common, you need to eliminate risks involved.
Turn off auto brightness, lower the brightness level, shorten the time youre screen stays awake for, and if youre using themes, avid the blue themed ics ones, although they look nice, the blue themes are one of the biggest culprits of the burn in issue and before ya know it youve got a battery image burnt in.
i notice it looks like you have a blue theme or something, my mate had same issue, what can ya do, its a pain and well probably all suffer it, whereas htcs dont have the issue, they just suffer dead pixels a lot, but hey, id soone have slight burn in than dead pixels i guess
Click to expand...
Click to collapse
F*** !
MIUI uses white & orange. Are those colors dangerous, too?
I mean... what colors should I avoid the most? Besides blue - I get it, it's bad (again, F***).
Anything that turns the RGB elements hard on (!). So high brightness only and white is worst as this is RGB full on, then pure red, pure blue, pure green. Cyan, yellow and magenta are less risky. In theory.
In practice and the real world, just keep the brightness down a little and you'll get years out of it. And save battery - the screen is THE major power consumer...
LenAsh said:
Anything that turns the RGB elements hard on (!). So high brightness only and white is worst as this is RGB full on, then pure red, pure blue, pure green. Cyan, yellow and magenta are less risky. In theory.
In practice and the real world, just keep the brightness down a little and you'll get years out of it. And save battery - the screen is THE major power consumer...
Click to expand...
Click to collapse
+1 absolutely right, follow these simple rules and all should be good.
White requires all three elements (RGB), right? Blue = B. Which one should I stick to...? My logics tell me blue, but I hear AMOLED's blue color is so pure because of a compound from algae (rofl) and it wears off more quickly (if any of that makes sense).
Cyan, magenta, yellow... Yeah, I don't have that on AOKP, lol. And neither would I want a yellow theme. Magenta would be nice, though.
RGB... hell, those are the primary colors. How about we use black, with polarised glasses? That'd be a good deal, since I wear glasses, lol.
Seriously, guys, what do YOU do to make sure the screen doesn't get damaged over time? Don't tell me you're using a yellow-black theme. And setting the screen brightness to 50% or more is required outdoors, so...
-----
I just went to a showroom today. Seen the Galaxy Nexus there. It's on, with the brightness set to maximum, 12 hours a day, and it's been like that ever since they put it there - more than 3 months. Seeing anything strange here?
well, as a rule i dont have wallpapers that have bright vibrant colours, i find it annoying and painful on the eyes, and if you have shortcuts on the homescreen it gets to looking messy, so i stick with dark colours, to be honest most of my wallpapers are black or almost black and my brightness is set at around 20%, and i dont struggle to see it outside in sunlight or anything, but this is just my prefernce, im sure everyone has different tastes, i think you should just enjoy your phone and use it how you wish, but try to avoid having it too bright, it should be ok.
graemeg said:
well, as a rule i dont have wallpapers that have bright vibrant colours, i find it annoying and painful on the eyes, and if you have shortcuts on the homescreen it gets to looking messy, so i stick with dark colours, to be honest most of my wallpapers are black or almost black and my brightness is set at around 20%, and i dont struggle to see it outside in sunlight or anything, but this is just my prefernce, im sure everyone has different tastes, i think you should just enjoy your phone and use it how you wish, but try to avoid having it too bright, it should be ok.
Click to expand...
Click to collapse
I'll stick to the stock AOKP theme (blue, that is); but I will be careful not to raise the brightness above the point of 50%. And even if I do, I guess setting it to the maximum point for a few minutes (when the sunlight is very strong) wouldn't hurt...
Oh and mind archiving your black and dark wallpapers and sending them over to me? Please (I'm always happy to pile up such wallpapers)
So i've heard that the S-AMOLED and S-AMOLED Plus technology has "Perfect" Blacks! Like the Blacks don't even "Light-up".
Is it true? Or is it just a marketing thing? :/
Try this and tell me what do u have?
Turn off all the lights in the night and then view some BLACK picture. U'll see that the Blacks are kinda "Greyish" :/
And there are some pixels that are perfectly black.. but they're just Random... :/
known "issue" on lowest screen brightness
Ohk.. So its not "Completely Black".
theres also another problem with it aswell... When I view some pitch black picture in a completely dark room. I see some small rectangular shapes that are "Pitch Black" in that Greyish background. I cant snap a picture of that unfortunately but u kinda get the idea. Can someone try this with there own S3 and report me? :/
It'll be quite helpful
Is well known issue.
http://forum.xda-developers.com/showthread.php?t=1703086
Sent from my GT-I9300 using xda app-developers app
Mine does the same thing: darker black splotches when viewing a black picture on the dimmest screen setting in a dark room.
Fortunately I don't often find myself looking at all-black images in the dark. It's hardly a major issue.
this issue is quite common, even on iPads, Motorola etc...apparently it is the adhesive within the layers of the AMOLED that causes an "ink" mark when screen displays black images within a dark environment...nothing is actually wrong with your scren, mine has 2 very small dots...while my other friend has had his replaced because the issue was far more prominant...so there is a possibility of claiming warranty? but this will depend on the country/retailer/etc...but always worth giving it a shot if you cant stand this issue...but yes, earlier batches, the issue was far more obvious...but later ones are better but information from other XDA threads suggest that you WONT find a unit without any marks...period.
Just picked up an AT&T One M7, and wow, the screen temp is incredibly warm compared to my G2 and just about everything else I use with an LCD screen. Is there an app/rom/kernel (or any combo) out there that will back my screen away from the warm tint? Thanks!
matt310 said:
Just picked up an AT&T One M7, and wow, the screen temp is incredibly warm compared to my G2 and just about everything else I use with an LCD screen. Is there an app/rom/kernel (or any combo) out there that will back my screen away from the warm tint? Thanks!
Click to expand...
Click to collapse
The warm tint is supposed to be correct and true to real life colors and what you actually see. Why would you want to stress your eyes by making the colors unnatural and harsh? I wish more companies would make their LCD's this way instead of the artificial over driven blinding harsh colors.
I calibrate my Nexus 5 with the SpyderGallery app. You just need a Spyder sensor... It isn't really a calibration in the operating system. But it will show the right colours opening images in the gallery of this app. This helps me when showing photos to my clients.
Solarenemy68 said:
The warm tint is supposed to be correct and true to real life colors and what you actually see. Why would you want to stress your eyes by making the colors unnatural and harsh? I wish more companies would make their LCD's this way instead of the artificial over driven blinding harsh colors.
Click to expand...
Click to collapse
I wish manufacturers would give consumers the choice. Clearly there's a variance in panel manufacturing and factory calibrations, even from within the same display supplier. To me, warmer, yellow screens looks dingy and dirty, and not what my eyes are used to when reading web pages. So the warmer temperature may actually have the opposite effect on my reading comfort. Nokia has begun offering an in-OS setting on WP devices that helps correct minor variations - and I'd love to see other OEMs follow suit.