screen blackness - Samsung Galaxy Nexus

someone here already mentioned that the GN screen isn't as black as the gs2 or nexus s. as in, a backlight is still visible on an all black background. can others confirm this? even better, can someone who owns both phones, or all 3, take a comparison pic? thanks
Sent from my HTC Vision using xda premium

I have the Nexus and GSII side by side and there is no difference in the 'blackness' when the screens are switched off. AMOLED does not use a backlight; absolute black is represented by a switched off pixel.
One thing I have noticed is that in boot screen animation they use a grayish background rather than absolute black which is kind of stupid. Makes the screen look like a washed out LCD.

i should have been more clear. i was referring to the screen in a switched on position with lets say an all black wallpaper. i know how amoled screens use a switched off pixel for blacks but some people on these forums have claimed that they are noticing a slight backlight, especially visible in the dark
Sent from my HTC Vision using xda premium

Galaxy nexus screen is pure black; however, it does seem to have more reflection when around light, and that light makes the pure blacks look not pure black.
But if you are in a dark area, blacks are pure black.

brian85 said:
Galaxy nexus screen is pure black; howeve.
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Click to collapse
Well, it isn't. It is as black as my Plasma TV (Panasonic GW20)...
Gesendet von meinem Galaxy Nexus mit Tapatalk

Mine is clearly glowing when having pure black background. Like night and day difference compared to my Nexus S which has pure black. I try to take comparison photo of the two as I'm about to send my GN for warranty.
Sent from my Galaxy Nexus using XDA App

myself noticed this although I'm not really concerned for now ( I own a nexus s )

So are the pixels 'off' or not..that is the question!
On the Battery test thread the all Black and all White screens were comparable in battery life, which i wouldn't expect.

DirkGently said:
So are the pixels 'off' or not..that is the question!
On the Battery test thread the all Black and all White screens were comparable in battery life, which i wouldn't expect.
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No, they are not off.
AMOLED screens have a minimum voltage applied when on. To turn a OLED pixel from fully off to fully on takes a lot more power. The contrast ratio of the sAMOLED screen is something like 100,000:1.

jpalo said:
Mine is clearly glowing when having pure black background. Like night and day difference compared to my Nexus S which has pure black. I try to take comparison photo of the two as I'm about to send my GN for warranty.
Sent from my Galaxy Nexus using XDA App
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thanks, I'd appreciate a picture to see the difference
Sent from my HTC Vision using xda premium

aadvanced1 said:
No, they are not off.
AMOLED screens have a minimum voltage applied when on. To turn a OLED pixel from fully off to fully on takes a lot more power. The contrast ratio of the sAMOLED screen is something like 100,000:1.
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Click to collapse
I guess the minimum voltage in GN has been increased at least compared to Nexus S. Here's comparison of my Nexus S (left) and GN (right). Pic is taken with 5 sec exposure. To be honest, the difference in that photo looks slightly bigger compared to what it is real life, probably because of that exposure time.
Black is from Dead Pixel Test apps black (second) screen. https://market.android.com/details?id=net.ujacha.deadpixel

aww that's kinda disappointing. I was really hoping for a pure black screen =/ you might be right about the minimum voltage increase being the cause of this

Well mine is BLACK and those pictures on my gn may look grey but the black around the phones show jet black (as viewed on my gn) Trust me blacks are black!

Disappointed, my Nexus S is really black.
Hope this is software issue and can be improved with future update.

you are correct the blackness is not pure black as my galaxy s, strange as it is using same screen technology

It is not pure black (as in a void of darkness) as it is like on my Nexus One. Very difficult to see... but seeable...

jpalo said:
I guess the minimum voltage in GN has been increased at least compared to Nexus S. Here's comparison of my Nexus S (left) and GN (right). Pic is taken with 5 sec exposure. To be honest, the difference in that photo looks slightly bigger compared to what it is real life, probably because of that exposure time.
Black is from Dead Pixel Test apps black (second) screen. https://market.android.com/details?id=net.ujacha.deadpixel
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Click to collapse
It is 100% a software issue. I've just done the same test using the same app (thanks for the link) and what I've noticed was the black wasn't pure black like Nexus S but software buttons were PURE BLACK. Because they are the part of the screen itself, it means Google changed it on purpose (or it's a bug)
Sent from my Galaxy Nexus using xda premium

Really hope this gets fixed

My screen is totally black when viewed when any light is around...like DAMN, black.
But I definitely agree when viewed in total blackness it looks like the screen has a (dim)backlight. Hopefully software and not hardware.

I think this could possible something that google have done on purpose to make the colours more "true to life" as with my S2 the blacks were gorgeous as the screen went off, but sometimes it didn't make the image very real as blacks were sometimes darker than they actually should of been
Any i don't know :/ - would be nice to have the option ie a switch on and off switch

Related

[Q] Yellow screen tint?

Hi all,
Has anybody else noticed a yellowish tint to their screen, especially when displaying lighter colours, white, light blue etc?
This only seems to be the case when looking directly at the screen. If I look at it from any sort of angle the yellow tint is not there.
Any info or confirmation that others are experiencing this too would be much appreciated. If this is a hardware issue then I will return my phone.
Thanks all
Sent from my Galaxy Nexus using Tapatalk
Sorry to bump this, but I assume the lack of replies means I'm alone with this issue?
Should I get my unit replaced or is this a software issue?
Thanks
Mine is quite yellow too against my S2. Decided it must be faulty and it's going back.
Going to stick to my S2 with Cyanogen as it's much better...
When I go into my settings screen it has a yellowish tint in the bottom half of the screen where the top half is black.
When I go into my app drawer the background is black as it should be.
Sent from my Galaxy Nexus using XDA App
seakins said:
When I go into my settings screen it has a yellowish tint in the bottom half of the screen where the top half is black.
When I go into my app drawer the background is black as it should be.
Sent from my Galaxy Nexus using XDA App
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Click to collapse
The gradient in the settings background is a feature.
Sent from my Galaxy Nexus using XDA App
I have not noticed any yellow screen in the settings menu myself.
I have been reading that the Galaxy SII had similar yellow tint problems when released and that it was corrected with a software fix?
I'm more worried that this isn't a hardware fault more than anything, software faults don't worry me too much as I'm happy to wait for a fix...comes with the territory when owning a smartphone
Think I will be returning my handset, the yellow tint combined with the volume problem is doing my head in!
I have been watching a few you tube clips and i don't see much yellowish tint on theirs but then again it does go completely black in the app drawer.
It really doesnt faze me as much as the volume issue though.
is it a problem or a feature?
I don't really know what to say, but let me give you my 2 cents.
First, AMOLED screens are all different for some reason, and I can vouch for this as I replaced my Nexus one 9 times for power button and various other issues, and each time the color temperature was different. Some were warmer (with a red tint) while others were cooler (blue tint). If you swap it, you might get a better tint, maybe even white if you're lucky.
Second, the Nexus S also had a tint problem (yellow tint) just like yours. The two display models at my BestBuy both are VERY YELLOW compared to my HTC Sensation and look really bad, but it might be because their screens were ruined from being on for so long. There was a post on XDA in the Nexus S forums who said he swapped until he got a "white tint" but then Google actually updated the Nexus S with different Color Settings and totally washed out his screen, while yellow tinted ones actually got better. If Google releases a color patch, you might not like it, but I don't think they will after the backlash from the Nexus S one.
tl;dr Get it swapped, it's a hardware issue. Swap until you get one you like, you paid for it, you deserve it.
Oh geez here go again, i thought the yellow tint was going to die with the galaxy s ii, guess not, it's alive again on the galaxy nexus , i swapped my galaxy s ii because the yellow tint was too distracting, in low "backlight" the white looked yellow , the one i got is less yellow but the colors dont pop as much as on the first galaxys ii i had
Chad_Petree said:
Oh geez here go again, i thought the yellow tint was going to die with the galaxy s ii, guess not, it's alive again on the galaxy nexus , i swapped my galaxy s ii because the yellow tint was too distracting, in low "backlight" the white looked yellow , the one i got is less yellow but the colors dont pop as much as on the first galaxys ii i had
Click to expand...
Click to collapse
You're going to want LCD if you want perfection, but you'll give up great blacks and thinness+battery life, not to mention the phone entirely.
Keep swapping, took my 9 tries but it was worth it for my Nexus One
seakins said:
When I go into my settings screen it has a yellowish tint in the bottom half of the screen where the top half is black.
When I go into my app drawer the background is black as it should be.
Sent from my Galaxy Nexus using XDA App
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Click to collapse
I've got the same 'issue'. While I understand it is a feature, it really looks odd/very greyish, especially on auto brightness.
BTW I'm starting to like that yellow tint. It really is helpful when browsing the Internet, because it's more pleasant for the eye.
Sent from my Galaxy Nexus using xda premium
Got mine today. The yellow tint was the first thing I noticed. I know it's fixable, but it's annoying.
Sent from my Galaxy Nexus using XDA App
OMG, is it really as bad as in this video?
The Galaxy Nexus screen looks so yellow compared to iPhone 4S display
It looks like he has auto-brightness enabled on the Galaxy Nexus.. it looks yellower unless you turn up the brightness.
The whites on the iPhone 4 are ridiculously clean and white, no phone compares to it. The blacks on the Nexus are also ridiculous and no phone (except other Super AMOLED phones) compare to it.
Take your pick, better whites, better blacks. The iPhone screen is still tops, but it's small. I have an iPhone 4 and a Nexus (just sold a GS2).
If I compare the screens side by side, then yeah, the utter blinding white of the iPhone 4 makes the Nexus white look kind of eggshell white, just not as bright or crisp. But using the Nexus on it's own and it's fine, white looks white enough when not being compared to the iPhone. The colors on the nexus are much more vivid and true to life than on the iPhone.
Nexus also has crisper text than on the iPhone 4 believe it or not. There is no perfect screen, all have +'s and -'s, you just have to pick which +'s you like best. For me it was the insane resolution, size and color accuracy of the Nexus. It's plenty bright, just not plenty white when compared to the ifruit.
ferris2375 said:
Nexus also has crisper text than on the iPhone 4 believe it or not.
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Click to collapse
iPhone doesn't have Roboto
definately noticed the yellow tinge... bloody Samsung!
actually the yellow issue on the GN appears to be because of the colour profiles that have been set in a similar way to how google updated the nexus S and altered the colors.
in AMOLED screens overtime the colours actually fade and become less vibrant now blue usually goes first and is at a much faster rate than the other colours.
considering that this fading occurs perhaps they deliberatly make the colours a bit 'warmer' to offset the blue fade time.
this was also interesting:
"Color balance issues
Additionally, as the OLED material used to produce blue light degrades significantly more rapidly than the materials that produce other colors, blue light output will decrease relative to the other colors of light. This variation in the differential color output will change the color balance of the display and is much more noticeable than a decrease in overall luminance.[63] This can be partially avoided by adjusting colour balance but this may require advanced control circuits and interaction with the user, which is unacceptable for some users. In order to delay the problem, manufacturers bias the colour balance towards blue so that the display initially has an artificially blue tint, leading to complaints of artificial-looking, over-saturated colors. More commonly, though, manufacturers optimize the size of the R, G and B subpixels to reduce the current density through the subpixel in order to equalize lifetime at full luminance. For example, a blue subpixel may be 100% larger than the green subpixel. The red subpixel may be 10% smaller than the green."
its quite possible that the tints that are experienced on oled devices are probably deliberate to offset the problems with oled technology.

[Q] Screen blackness

The Nexus S had a completely black screen - at night black was no different that if it was switched off. My GN appears to have slight screen glow in the backs. However, I thought they were both SAMOLED screens? Presume I am wrong? Can anyone explain?
/R
I noticed the same thing. I just assumed that not all sAMOLED screens are equal, and that the change in resolution could have been a cause. Maybe Samsung wasn't able to perfect it. Just speculation
It is pretty close though.
Sent from my Galaxy Nexus using XDA App
I was expecting this too and was a little dissapointed, was looking forward to having my night clock on and the only light coming from the screen to be the clock text but the whole screen has a slight glow to it
Same here, I wonder why is it like that. No bragging of true black anymore. Feels like step backwards.
Sent from my Galaxy Nexus using XDA App
jpalo said:
Same here, I wonder why is it like that. No bragging of true black anymore. Feels like step backwards.
Sent from my Galaxy Nexus using XDA App
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The screen does do true black.
It's just the wallpaper isn't turned to black, it's made very dim.
The "slight glow" is the dim wallpaper if you look carefully.
Hmm, I made own 1x1 black picture for background. Still it isn't true black.
Sent from my Galaxy Nexus using XDA App
The same here, not nearly as black as my old Galaxy S
The blacks look black as black to me.
Mine seems pretty black. I've only had a Vibrant with SAMOLED before, and I think this is equivalent if not better. Sadly, I've got a small weird green dent on the pixels on the second quadrant though...
I've noticed this too. Definately not as dark as my Galaxy S2 was.
My blacks look as good as my GS2's did to my eye. When you guys open up the app drawer, it's not totally black behind the icons? I can't make out bezel or screen with blacks.
I've also noticed that the blacks aren't as black as on my Galaxy S. The blackness on the GS was even more noticeable since every colour displayed is eye-burstingly vivid. I do miss the true black but at least the general display is nicer on the GN than the GS.
Sent from my Galaxy Nexus using XDA App
I just used the night display mode on Gentle Alarm.
I put the Galaxy Nexus and Galaxy S2 side-by-side.
The Nexus definitely has a noticeable backlight compared to the S2.
jasbur17 said:
I just used the night display mode on Gentle Alarm.
I put the Galaxy Nexus and Galaxy S2 side-by-side.
The Nexus definitely has a noticeable backlight compared to the S2.
Click to expand...
Click to collapse
Well the nexus doesn't use any backlight. Which is odd because there is a definite glow, I wonder if some screen tuning can remove it
Sent from my Galaxy Nexus using Tapatalk
Nigel Tufnel: It's like, how much more black could this be? and the answer is none. None more black.
I hate black screens I only like white ones....yea i said it!
My screen is as dark as midnight and is peferectly fine with me.
Can people please who say screen is completely black test the clock app in night mode in a perfectly dark place. I have a feeling this is not only in some of the phones but in all. Will contact support to verify this.
I think the black tint on the glass isn't as dark as it was on the nexus s. At least that's how it looks on my gnex.
When the screen is on for an AMOLED display, it's not "true black". If I remember correctly, there's a minimum voltage applied when the screen is on. Otherwise it would draw more power to switch the pixels from fully off to on. In other words, the GN might have some slightly different minimum voltage.
jpalo said:
Can people please who say screen is completely black test the clock app in night mode in a perfectly dark place. I have a feeling this is not only in some of the phones but in all. Will contact support to verify this.
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Click to collapse
As mentioned earlier, the clock app doesn't use a pure black background. Rather, it uses an dark overlay over your wallpaper.
Also, the default background for apps has been changed to one that isn't pure black

Galaxy Nexus grainy and vertical banding screen!

how many have devices like this? It doesnt seem to disappear on mine until about half brightness up.. and even there i can slightly tell. is this a problem on most phones or only some? Also with light usage i'm losing over 10% per hour, doesnt seem right at all
All AMOLED screens have that issue at low brightness, it just varies from phone to phone. Give it a few charge cycles before you start looking at the battery. The battery on my Nexus drained extremely quickly when I first got it but it's been lasting longer and longer with each passing day (3 so far)
My screen is the same, you need to be at half brightness to get a decent image. Auto brightness in full darkness makes you think that the screen is totally broken.
yours has like bands of a different shade too? mine has one thick one on the right of the screen and it's pretty annoying.. about to go into the city tomorrow to exchange it but if there all like that then i dont know
I went in to the store, and they said that they wouldn't switch it out.
Mine looks fine at lowest brightness. I use mine mostly at.about 10% brightness and look great.
Sent from my Galaxy Nexus using xda premium
Yes ! I thought that mine was also broken. It is good to know i am not alone .
can we get a screenshot?
Would it even show in a screenshot? Yes, it's AMOLED... that's the way it is. More than worth it.
It wouldn't show in a screenshot since this is a hardware related issue. And I don't think it's normal if it has brighter spots like explained. Mine isn't as smooth as you would expect either at lower brightness levels but it is not like explained by the OP.
Sent from my Galaxy Nexus using XDA App
All SAMOLEDs sacrifice clarity and color representation for slightly better black levels. Just the nature of the screen technology. All 4 Samsung models (and all 7 phones) I've come across have it.
@rbiter said:
Mine looks fine at lowest brightness. I use mine mostly at.about 10% brightness and look great.
Sent from my Galaxy Nexus using xda premium
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in denial???
I've never seen the banding effect before, and this is coming from someone in a household with two out-of-commission Galaxy S', two GSIIs, a Focus, and my Nexus. The PenTile screen door effect can get to me if I'm looking for it, but that's the only SAMOLED issue I'm familiar with.
Sent from my Galaxy Nexus using XDA App
I actually like the slightly grainy look mine has at lower brightness levels
Would Voodoo Control be compatible with this? It was an awesome feature that my Nexus S had!
Sent from my Galaxy Nexus using xda premium
Not only is mine grainy at low brightness, it also has a pink and green tinge (in opposite sides of the screen)
It doesn't seem to happen on the 1st gen AMOLED (Nexus one, not grainy at low light) or S-AMOLED (Galaxy S, it did have an overall blue tint, but it was on the WHOLE screen)
Not completely noticeable, but would have expected better. At 40% or higher, its barely noticeable.
Got the same problem 40-50% and its barely noticable, any lower and i can see much distortion.
I know its a hardware thing but is this something that might be fixed with a future update or are we stuck with this?
The screen will look grainy on white/grey backgrounds at lower brightness settings, but there should not be any vertical/horizontal banding on the screen.
My first phone had a vertical bar of banding going down the entire screen, and bothered the crap out of me. Went in this morning and had it swapped with a Nexus that has no issues. For the price that we're paying for this phone (especially those with International unlocked imports) it better be perfect.
yup, i only ever see it in one place (the grain), and thats on the store before anything loads (an all gray background). Don't see it on white or anything else... that i know is pentile.
Galaxy Note is similar at lower brightness levels, must be AMOLED.
iPhone 4S is best if reading at lowest brightness levels is very important,
but in brighter light the Nexus and Note look amazing.

Blacks are not completely black

Previous to my GN, I've had a Nexus One, Nexus S, and Galaxy S II (international version) and on all of the phones black levels were pitch black and no different to the screen being completely off. Despite still being an AMOLED display, it seems the GN's screen can't do pitch black.
As a test, go in a dark room and open the clock app. Long press anywhere on the screen and the clock will go into night mode where it will be a completely black screen with just the time showing. You'll notice that there is a still a bit of light emitting from the dark spots.
A little disappointing... I wonder if this could be fixed in software.
PrawnPoBoy said:
Previous to my GN, I've had a Nexus One, Nexus S, and Galaxy S II (international version) and on all of the phones black levels were pitch black and no different to the screen being completely off. Despite still being an AMOLED display, it seems the GN's screen can't do pitch black.
As a test, go in a dark room and open the clock app. Long press anywhere on the screen and the clock will go into night mode where it will be a completely black screen with just the time showing. You'll notice that there is a still a bit of light emitting from the dark spots.
A little disappointing... I wonder if this could be fixed in software.
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Click to collapse
It can do pure black but not everything is pure black. I just rebooted and say the Google boot image. Its solid black. I'm in a dark room now and can't tell a difference where the soft keys end and the case begins.
LTE Google Galaxy Nexus! - Stock
Asus Transformer - OC/UV
PrawnPoBoy said:
Previous to my GN, I've had a Nexus One, Nexus S, and Galaxy S II (international version) and on all of the phones black levels were pitch black and no different to the screen being completely off. Despite still being an AMOLED display, it seems the GN's screen can't do pitch black.
As a test, go in a dark room and open the clock app. Long press anywhere on the screen and the clock will go into night mode where it will be a completely black screen with just the time showing. You'll notice that there is a still a bit of light emitting from the dark spots.
A little disappointing... I wonder if this could be fixed in software.
Click to expand...
Click to collapse
Actually that's just the clock app, you can easily see that it's an extremely dimmed version of your wallpaper. My wallpaper is this http://cooldesktopbackgroundsx.com/wp-content/uploads/2011/02/34327523.png
and I can easily see the eye in the dark mode.
I don't see how your background could make a difference. Night mode is completely black. Just look at the screen shot.
I can also notice this when first booting up and see the Google logo. It was the same this on two other units that I looked at, so I don't think it's unique to my phone. To truly notice it you have to be in a pitch black room. I only noticed it because I was using my phone as a bed side clock.
No screen will give you true black that close... Maybe you need a plasma tv screen
Sent from my Galaxy Nexus
tryceo said:
No screen will give you true black that close... Maybe you need a plasma tv screen
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
The whole point of AMOLED is that each pixel is it's own light source which can be completely turned off. True black was possible on every AMOLED phone I've ever used prior to this one.
PrawnPoBoy said:
The whole point of AMOLED is that each pixel is it's own light source which can be completely turned off. True black was possible on every AMOLED phone I've ever used prior to this one.
Click to expand...
Click to collapse
That is exactly correct. Fortunately, at very low brightness, my GN does indeed display true black. I have an all black background and if I cover the time, I can't tell a difference between the phone off and on. Keep in mind that true black only occurs under extremely low brightness. Turning the brightness up introduces a bit of light polution.
PrawnPoBoy said:
The whole point of AMOLED is that each pixel is it's own light source which can be completely turned off. True black was possible on every AMOLED phone I've ever used prior to this one.
Click to expand...
Click to collapse
No, no... I've owned the Fascinate on Verizon and when in complete darkness you can see a little bit of light emitting from the screen. The Gnex just has more pixels so there's probably more light emitting. But the blacks don't seem to be any less black than my Fascinate. When you turn the screen on the pixels must be excited in order to know when they must turn on or off, this will still emit a miniscule amount light.
PrawnPoBoy said:
I don't see how your background could make a difference. Night mode is completely black. Just look at the screen shot.
Click to expand...
Click to collapse
I'm sorry but you're TERRIBLY mistaken and I wish this thread would get deleted before you confuse others! Night mode is simply DIMMED. It is NOT 100% black, but transparently darkened. There is a really easy way you can see this for yourself, simply turn on an animated live wall paper and go into night mode in the clock. You'll se the moving live wallpaper in the background in the "black" areas. That screen shot you took is showing the TRANSPARENCY where it's black. It is NOT actually black there!!!
The GNEX screen is JUST as black as any other SAMOLED Screen if not even more so! If you want to see 100% black - just boot into clockwork mod recovery! the entire background ther is 100% black and you'll see how inky black it looks! That said the status bar at the top of the screen is also black, and blends right in with the bezel.
PrawnPoBoy said:
The whole point of AMOLED is that each pixel is it's own light source which can be completely turned off. True black was possible on every AMOLED phone I've ever used prior to this one.
Click to expand...
Click to collapse
when i dim my clock app i can still easily see my background live wallpaper...
Let's leave race out of this. We're all created equal.
Sent from my iPad 2 using Tapatalk
jburnette87 said:
Let's leave race out of this. We're all created equal.
Sent from my iPad 2 using Tapatalk
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well, uhm, white ain't completely white either. haha.
pukemon said:
well, uhm, white ain't completely white either. haha.
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Click to collapse
Lol
Sent from my iPad 2 using Tapatalk
Protonus said:
I'm sorry but you're TERRIBLY mistaken and I wish this thread would get deleted before you confuse others! Night mode is simply DIMMED. It is NOT 100% black, but transparently darkened. There is a really easy way you can see this for yourself, simply turn on an animated live wall paper and go into night mode in the clock. You'll se the moving live wallpaper in the background in the "black" areas. That screen shot you took is showing the TRANSPARENCY where it's black. It is NOT actually black there!!!
The GNEX screen is JUST as black as any other SAMOLED Screen if not even more so! If you want to see 100% black - just boot into clockwork mod recovery! the entire background ther is 100% black and you'll see how inky black it looks! That said the status bar at the top of the screen is also black, and blends right in with the bezel.
Click to expand...
Click to collapse
What are you smoking? Download that screen shot and check thd color yourself. Its #000000, meaning BLACK. The only confusion is with people not knowing how to go into that mode in the clock. LONG PRESS, not just a simple tap.
Managed to finally find another thread talking about this. Theres even photographic evidence using a long exposure shot.
http://forum.xda-developers.com/showthread.php?t=1371449
I guess the comment that there is always a minimum amount of power in even the black pixels could be accurate.
PrawnPoBoy said:
Managed to finally find another thread talking about this. Theres even photographic evidence using a long exposure shot.
http://forum.xda-developers.com/showthread.php?t=1371449
I guess the comment that there is always a minimum amount of power in even the black pixels could be accurate.
Click to expand...
Click to collapse
Yes. From what I have read (OLED information, a few book selections, and an interesting patent) sAMOLED displays include what is called "pixel pre-charging".
This is due to the fact that it is far easier to precisely control the pixel, which corresponds to a "drive voltage", when the starting point is a pre-charge. Its faster and more accurate. However the pre-charge causes light to be emitted. There is no avoiding that. As much as people say "my nexus s/galaxy s/galaxy s 2 have pure black", there is NO SUCH THING even on a sAMOLED display. Contrast ratio for the Galaxy Nexus is 100,000:1 rather than infinite.
Hi, just wanted to put this topic to rest.
Was somewhat disappointed in the screen performance of the Galaxy Nexus, coming from an Galaxy S2. However I reckon it is an issue that can be fixed with drivers.
The blacks on the Galaxy Nexus are far from as good as the SAMOLED+ panel on the SGS2.
Here are some pictures of them side by side with the clock app set to night modus.
Not a deal breaker for me, but I hope this is improved in future updates.
PS: Sorry for the big-ass pictures..
my screen is blacker than the bezel..
Sent from my Galaxy Nexus using XDA App
Godo_PPL said:
Here are some pictures of them side by side with the clock app
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Click to collapse
What is your wallpaper, cause I think I can see it in the second to last photo. Like stated above, the clock is only a semi transparency over the wallpaper. Run a screen checker and take pictures of that black, that would be a better test and example
Edit: in all likely hood its just a calibration issue. Franco's kernel improved whites and colors significantly over stock. Personally, I can see that its not 100% black at the moment, but it is 99.999% black. And 100x better than backlit
Sent from my Galaxy Nexus Bugless Beast 4.0.3 lte +franco#5
The technology switches off the pixel so there is no blacker than that if you are not getting pure black then something is wrong most probably the wallpaper is not really black.
Sent from my Galaxy Nexus using Tapatalk

[Q] Galaxy Nexus screen is Super Amoled or not ?

Hi all. Few days ago, i've made a pure black image on my PC and set it as wallpaper on my Gnex. But when i view that photo in gallery (in full screen mod) i realize that screen is not 100% black, it's super strong gray but not black. I'm confuse that the screen is really Super AMOLED or a kind of LCD?
Its superamoled
Sent from my Galaxy Nexus using xda premium
Although its true that in theory there would be no backlight for an OLED screen, there is still a small amount of current that goes through just below the threshold of on/off for no lag when going from black to something else. Unfortunatly, the tjreshold will not be common for every led, so some leds will be lit. Thats what produces the small backlight even when displaying true black
Its super amoled (or amoled HD or whatever they call it) and is able to produce true black.
Xda dark theme shows no color difference between it and the nav buttons on the bottom.
Emhalwis said:
Its super amoled (or amoled HD or whatever they call it) and is able to produce true black.
Xda dark theme shows no color difference between it and the nav buttons on the bottom.
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There is no difference because the soft buttons are part of the display. Turn off the lights and you will see the entire 4.65" display glow a dark grey. It's a bit of a disappointment actually, I have a Samsung focus and galaxy S2 and the displays are BLACK. Side by side you can definitely see the difference, in the dark I cannot even find my Focus, the nexus on the other hand glows bright enough to notice.
You guys need to remember also that this is a PENTILE display, in order to get the 720P res, Samsung went with a pentile display. There is a big difference between the Super AMOLED displays on the other samsung devices and the nexus. The not really pure black blacks is one of the cons of the nexus' pentile display along with a slight yellow hue, viewing angle and a few others covered in many online articles.
Don't get me wrong, the display is still very beautifull in comparioson to most other phones. The resolution is amazing, I played a 4.2GB MKV of Avatar with MX player and it played flawlessly and the full screen (4.65") video was gigantic and absolutely crisp. But it's still not the AMOLED that Samsung customers are used to seeing.
so pentile or not if it displays black all led is turned off and thus dark no?
i understand pentile may affect other color reproduction but true black must be true black coz led is turned off right?
my previous phones were a gs2 and vibrant, blacks are blacks on all of them including this gnex
Sent from my Galaxy Nexus using Tapatalk
It's a PenTile Super AMOLED screen. This is as opposed to the Galaxy S II and Droid Charge which use Super AMOLED+ screens-- which use the traditional RGB stripe sub-pixel arrangement.
Looking at the button bar in the dark on my gnex, I can safely say mine is true black.
Sent from my Galaxy Nexus using xda premium
No. Like the guy before said, there need to be still a low current on the display so that there would be no lag when switching from black to other colors because it takes longer to switch on the display than changing the color.
Sent from my Galaxy Nexus using XDA
For some reason these new HD amoled screens aren't showing total black like previous amoled screens. There are already threads we talked about theorizing why this is. Put next to the nexus one or galaxy s and its not as black. Perhaps its due to higher pixel density, or maybe a change in the technology. But you're not alone, just have to live with it.
RogerPodacter said:
For some reason these new HD amoled screens aren't showing total black like previous amoled screens. There are already threads we talked about theorizing why this is. Put next to the nexus one or galaxy s and its not as black. Perhaps its due to higher pixel density, or maybe a change in the technology. But you're not alone, just have to live with it.
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Put the phone next to a Note and you'll cry foul. Colors, brightness, and everything look like crap when held side-by-side.
jonathan3579 said:
Put the phone next to a Note and you'll cry foul. Colors, brightness, and everything look like crap when held side-by-side.
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I don't get it, since they are using the same screen (except the resolution), shouldn't they be the same?
There are some defective screens out there.
My blacks are black. Not grey, not almost black.
Black.
Is pure dark so important? How often we stare at our phone with a pure dark picture in a pure dark room?
Amowagou said:
Is pure dark so important? How often we stare at our phone with a pure dark picture in a pure dark room?
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It's more of saving battery. When it's pure dark, the individual OLED's are almost completely turned off. I say almost because some current still runs through it but nothing like what an LCD would.
And it's better for contrast?
Another moment of everything is amazing but nobody is happy.
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iphone. helping computer illiteracy become popular since 2007.
@rbiter said:
Another moment of everything is amazing but nobody is happy.
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iphone. helping computer illiteracy become popular since 2007.
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LOL. Best. Comedian. On. This. Planet. Period.
Sent from my Galaxy Nexus using XDA
nexicon said:
LOL. Best. Comedian. On. This. Planet. Period.
Sent from my Galaxy Nexus using XDA
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LOL.
Learn to type, that is annoying. If that was an intentional lulz, you failed.
The blacks are pretty damn black on my phone, comparing with my gs2 if anything its just as black?
Sent from my Galaxy Nexus using XDA
Higher resolution will most likely result in more possible backlight from true black. (Because of the greater amount of leds being over the threshold)
And i cant says my screen is totally absent of any light, but it is damn friggen close.
Any AMOLED screen will beat the crap out of LCDs. The contrast is an order of magnitude higher thanks to the screen generating its own light, thus being able to shut down fully (or almost fully) to provide no light.
Why do you complain that there is a minuscule amount of current going through the current with a barely noticeable in pitch black amount of light being emitted, when any other screen will be VERY noticeable at night when displaying black?! This phone's screen is amazing. Yes, it's not perfect, but it's better than most (all?) other phones' screens out there. You know, screw that, this thing is probably SEVERAL THOUSAND TIMES BETTER THAN THE MONITOR YOU ARE CURRENTLY STARING AT.

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