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I've found out, that the Amoled can't display perfect black. I tried the desktop clock thing, the blackle Google page (scrolled to black only area), and I made a photo in PhotoShop completely black and open it up in gallery.
What I noticed is, that the screen still is displaying something when it should be black. This is very easy to see if you put the phone to sleep when displaying such black.
What am I missing? Doesn't the Amoled completely turn of a pixel that is black? Can someone try to replicate this?
Do you think it's possible that I have an lcd desire and just don't know it?
Sent from my HTC Desire
I have also a Hero (with lcd display) and black on my Desire is "more black" than Hero's
For me it's ok
If you look at LCD screens through a circular polarisation filter you'll sometimes see coloured patterns on it, or it will get completely filtered out at a certain angle. To the best of my knowledge, OLEDs don't emit polarised light, so if you've been to see Avatar or another movie in Real3D and walked away with the glasses then you can use them as an LCD detector...
(The blacking out effect works as a cool CSI-esque monitor dust detector)
No disrespect, but... who cares???
So the blacks are not as deep as say, a Kuro plasma. This is a smartphone, not a home theater tv.
Jaa-Yoo said:
No disrespect, but... who cares???
So the blacks are not as deep as say, a Kuro plasma. This is a smartphone, not a home theater tv.
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Click to collapse
no disrespect but,...
well real black "off pixel" don't use power so all the people who care about batterylife might care...
s.
I don't think they do emit light on blacks. I have noticed that in a completely dark room I can't see blacks on my Desire at all, it emits no visual light. Maybe the black you were testing isn't pure black.
Sent from my HTC Desire
"It's like, how much more black could this be? And the answer is none. None more black."
Couldn't help myself
Sent from my HTC Desire using XDA App
I do agree that it is much better than any lcd. BUT black should be no light at all. When you turn off the screen when all the pixels are supposed to be off, you see a change. You can also see the outline of the screen when it is in any of the previously mentioned methods of darkness.
Sent from my HTC Desire
I did the following test :
- found a room where I could be in complete darkness
- used the following enclosed file (a pure RGB=(0,0,0) 800x480 png file) and displayed it fullscreen on my phone.
- use the palm of a hand to cover the 4 lit buttons
- the screen is pretty damn BLACK ! (an LCD screen, next to it, also displaying black pixels, would look like a torchlight)
- After a minute or so, the eyes getting used to the darkness, I could very slightly see the screen. I don't know how the phone is built, but I'm guessing it's a light "leak" coming from the LED(s) of the 4 buttons.
I tried this procedure at various brightness settings (from min to max) : the remaining light coming from the screen did not change.
Is there a mod to kill the buttons backlight ?
It is possible to kill the backlights, but have not tried it myself.
http://forum.xda-developers.com/showthread.php?t=704977&highlight=buttons+backlight
Ok, switched off the buttons backlight thx to Flaggie. The screen indeed still emits some light when displaying a full screen black picture. Strange.
It would be interesting to get an explanation from HTC about this, but i'm pretty sure it pointless hoping they would reply to such a question. I'll give it a try...
Perhaps you hae one of those new Desire models with a LCD screen?
No, I bought it the day it came out. Try out on your own. The test I detailed is pretty straight forward...
kekkle said:
Perhaps you hae one of those new Desire models with a LCD screen?
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That is what I thought at first, but than the amount of light on dark would change when you change the brightness.
I want to know what HTC has to say about this.
PS: I bought my phone in June.
Sent from my HTC Desire
OMG does any of you know how a led screen works? lol Active Matrix Organic Light Emitting Diode its name clearly states that the pixels are self-illuminating so clearly unless the screen is of the display is always going to give some light off
It is actually the other way around. They are self emitting, they can turn off. LCDs, however have a backlight, which doesn't turn off, so some light still passes through.
Sent from my HTC Desire
OLED can havae infinate contrast ratios. I have a cowon s9, it has an OLED screen and in a pitch black room you cannot tell it's on. The desire does emit some light even on true black :-/
AndroHero said:
OMG does any of you know how a led screen works? lol Active Matrix Organic Light Emitting Diode its name clearly states that the pixels are self-illuminating so clearly unless the screen is of the display is always going to give some light off
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Click to collapse
OMG please read the Wikipedia article...
Unlike over saturated colors and Pentile jagginess which are clearly visible and to some point distracting (at least to me) this seem like pure academic issue, since it can be visible only in total darkness and even then it is not visible unless screen is completely black.
What would be practical purpose in looking at black screen in darkness?
vlasac said:
Unlike over saturated colors and Pentile jagginess which are clearly visible and to some point distracting (at least to me) this seem like pure academic issue, since it can be visible only in total darkness and even then it is not visible unless screen is completely black.
What would be practical purpose in looking at black screen in darkness?
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Click to collapse
I agree. This is an academic issue, but aren't you a bit disturbed by the fact that there has been soo much talk about this oled screen and its pure black, and it was all a lie?
I think the problem might be in the image to screen processing where it gets converted to the pentile matrix(and over saturated).
Sent from my HTC Desire
Hallo friends, i read lot of about problem with this kind of display( pentile matrix)
I have vertical and horizontal banding too. But this one is something what is bothering me much more.
http://imageshack.us/photo/my-images/208/imgp5137v.jpg/
http://imageshack.us/photo/my-images/809/imgp5134.jpg/
Delarock said:
Hallo friends, i read lot of about problem with this kind of display( pentile matrix)
I have vertical and horizontal banding too. But this one is something what is bothering me much more.
http://imageshack.us/photo/my-images/208/imgp5137v.jpg/
http://imageshack.us/photo/my-images/809/imgp5134.jpg/
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Click to collapse
That's nothing to do with the Pentile Matrix! Definitely a defective screen, return it to the store and ask for a warranty replacement. The 'banding' is more to do with the AMOLED screen technology rather than the Pentile, as it was present on my SGS2, but is generally only visible under certain conditions (background colour/brightness).
Regards.
Is it visible on colors other than grey?
Sure, on blue background too,sometimes on white.(poarws photo with blue background) It depends on brightness.
More visible at white background with high brightnes.
More visible at blue and grey background with lower brightnes.
It does have to do with the Amoled technology, but I doubt it's a defective display. You can try to exchange it to see if it really is defective or not.
I have some vertical and horizontal banding only with lowest brightness at the white background.
With maximum brightness no lines or whatever
AMOLED has a few imperfections here and there, so it's not surprising. But if it's bothering you too much exchange it for another one, it could have less prevalent issues.
Just performed a test using screen test app my screen looks great.
Sent from my Galaxy Nexus using XDA App
How high is brightness with test screen
Mine is fine too but 60 percent and more.But this one issue bother me pernament ( no matter if 30 or 70 percent brightnes)
Tuesday iam going for a new piece, hope that will not be affected worse than mine
Try viewing those shades of grey on your phones, it's usually the most problematic color. Use a low brightness setting (around 25%) at a dim environment.
This exists on all OLED screens. Its the exact same on my Nexus S. It has nothing to do with pentile matrix, but OLED.
Sent from my Galaxy Nexus using XDA App
Yes i had nexus one galaxy s galaxy s II so i can compare,nothing like that before that.
50-60 percent of brightnes
I have the Galaxy Note and it has the same panel as the Galaxy Nexus albeit at 1280x800 instead of the Nexus's 1280x720. (Super AMOLED HD with Pentile sub-pixel arrangement)
My screen is great. The whites are brighter than they were on the Nexus. The Nexus displayed whites with a yellowish tint especially on low brightness. Plus I can't seen any banding on the screen and I have tested it on White, Red, Blue, Green and Grey backgrounds.
Im getting a new Galaxy Nexus in a couple of days. Since this unit is from a later batch I hope that there is no banding on the screen too.
Funny, I have a similar issue to Delarock's on my Galaxy S2, manufacturing date is 19th of October. I'm still thinking whether to replace it or not since since it's only visible on dark'ish grey, I couldn't replicate it on lighter greys, white, or any other color at various brightness settings.
Delarock said:
Yes i had nexus one galaxy s galaxy s II so i can compare,nothing like that before that.
50-60 percent of brightnes
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the same on lowest brightness...
so I always set up my phone to the hightest brightness
Hard for me to get a good photo but you can see the same problem on my NEXUS S screen. Its just a characteristic of OLED displays in general.
Sent from my Galaxy Nexus using XDA App
Really similar to the screen on my new Galaxy Nexus. I didnt notice the diagonal right away but that is certainly more significant. My screen a rosy hue in the bottom half and especially the lower left.
I'd love to see a similar picture of someone who says that their screen doesn't have it.
(Click for 100% crop)
So are some of these screens defective? Or is it really just the nature of the beast?
How does one tell what manufacturing date their device was made to? Would I be able to go to a store and exchange for a datecode that shows no banding issues?
I am having the same issue ... another thing I notice is weird issues with the camera while in a dark room. If I have my camera on in a low light room, I get this weird "dancing" of black blotches in the really dark areas of that room.
I like all solid black wall paper, I find the fastest easiest way to get it is to turn off the camera flash, put my finger over the lense and take a pic. Worked for every other phone I have but the GNex. I get a weird blotchy image ... now I am on GNex#3 (other 2 I returned for different issues) and I have noticed this camera thing on #1 and now #3. With the first one I assumed this was normal ... but after going from the second one to the third I see a HUGE difference in screens. With phone #2 I was able to do the phone/black wallpaper with no weird distortion. Now the really strange thing is that that same pic taken with the second phone (that displyed pure black on that device) shows up blotchy on device 3.
Hope this makes sense to someone lol cuz reading it back I sound crazy.
I just hope the folks at the Verizon store don't give me a hard time trying to get another one!
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.
Click to expand...
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
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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.
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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.
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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.
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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.
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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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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
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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Click to collapse
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.
Click to expand...
Click to collapse
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.
--------+++--------
iphone. helping computer illiteracy become popular since 2007.
@rbiter said:
Another moment of everything is amazing but nobody is happy.
--------+++--------
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
Click to expand...
Click to collapse
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.
I recently got an evo lte for my son basically to use as a small tablet. I cant help notice that the screen is way brighter. Now ive always seen the evo people use this as a defense when someone says an s3 is better then the evo but i just always brushed it off. Its not just mine either my gf is the same way. The brightness on both phones is turned all the way up. Ill post sy side pics shortly
Sent from my SPH-L710 using xda app-developers app
Its well known. Different screen technology. I have both phones and was one of the folks that prefer the EVO screen, at first. Now I prefer the deep blacks of the SG3.
Trade-offs.
Personally, I don't use my phone outdoors much in the direct sunlight, so this definitely isn't a requirement for me.
Bear in mind the SGS3 uses actually a technically superior technology to LCD... an LCD has a backlight, with pixels that are flipped on and off and the backlight shines through them. So black couldn't be farther from black - it's grey at best, as you could use an LCD screen to light your way down a darkened hallway even with a fully "black" screen. This also makes contrast ratio pretty bad.
The AMOLED (key letters in there being OLED) display by contrast has pixels that light - little LED's. There's no backlight, so black is black - like phone off black. It's a much, much better picture.
I have my brightness set to "auto", so I haven't noticed it being any dimmer than my older HTC phones, but I definitely appreciate the picture and contrast.
I guess i just love my s3 so much i thought it was invincible lol
Sent from my SPH-L710 using xda app-developers app