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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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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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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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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
I have become satisfied with the battery life on my AMOLED inc, but the power button is screwed up so I am getting a new/refurbished one. I am not sure if it will be AMOLED or SLCD, but I am excited either way.
Does the SLCD get the same or better battery life? Is the only other difference between the two that some recoveries don't work with it...
I may be wrong but I've never heard any blaring differences between the two, yet this is with my experiences.
If there is any battery saving difference I haven't noticed any. I got one of the first SLCD units and the battery life is just as bad as before.
For some reason I have it in my head that amoled has better battery with dark colors and lcd with whites. I think I read it in regards to lcd and led tvs.
Sent from my Incredible using XDA App
As far as I know, AMOLED's are better when displaying black colors. Because the pixels don't light up thus saving power. But on the downside when displaying white (Such as a web page) it can use up to 3x more power. The SLCD on the other hand is more neutral. It uses the same power with all colors. Because the blacks light up, but the white doesn't use any more power than the others.
Correct me if I'm wrong. That's just what I've read somewhere along the line.
I think lcd's work by always displaying white then use power to block certain colors out.thus blocking every color, ie black, uses the most. At least that'd what I always thought.
Sent from my Incredible using XDA App
AMOLED on average has better battery life through most tests I've found, but the principles of what you're viewing has a large affect on it. I prefer dark backgrounds as it is, but if you're using a lighter background and have your screen unlocked often it's going to drain a bit more than it would if you had say, a black or dark gray background. The differences are really going to be minimal in everyday usage.
there are several threads for HD2 and desire they are using super amoled screens ... they have mentioned that for super amoled usng black background saves battery ...... cause the pixels are turned off ...
while in case of LCD the pixels are by default turned on .... so if we put black background it actually sucks more juice in case of LCD using Black background . it is advisable to keep white background in case of LCD
Motorola defy neither has LCD and definitely not super amoled screen ......so should we keep black background or white background to save battery ??? i mean ours is Capacitative TFT .... so which on of the case above i mentioned is applicable for motorola defy?
black is prefered, the white one is so dazzle...
joydeep1985 said:
i mean ours is Capacitative TFT .... so which on of the case above i mentioned is applicable for motorola defy?
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LOL, the Defy has a capacitive LCD Touchscreen.
So in theorie it is better to have a white background but
the most saving can be achieved when turning down the backlight.
So it is more important to have good contrasts.
greetings
LCD are on all the time when showing black areas or even a full black screen (not the same as being off), unlike OLED choosing a dark background will not save any battery life.
But I have noticed when using dark themes my display consumers less battery.
Sent from my MB525 using Tapatalk
Makes no difference, lcd backlight is always on regardless of colour.
Just decrease your phone's brightness, it will consume less battery regardless of White/Black background [which may matters but I never experienced such things]
sg3707 said:
But I have noticed when using dark themes my display consumers less battery.
Sent from my MB525 using Tapatalk
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Defy uses a LCD screen, therefore turning all pixels on all the time something is displayed. Even pure black pic
OLED screens however benefit from black backgrounds since a pixel is not turned on until it is commanded to display a color other than black. This results in deeper blacks/higher contrast.
therefore, using a black bg on a lcd screen will not save you power. If you experience otherwise, it's placebo effect
Hi,
My phone suffered a blow and now the display is just black. The digitizer works, I've managed to export the contacts to the SD card to verify and nothing really seems out of order (receiving calls, haptic feedback, etc.).
I ordered an S-LCD replacement display, seeing as the box didn't say AMOLED. It arrived, I changed the display and it didn't work (no backlighting at all, which was present with the damaged display). I contacted HTC and they said that the phone has an OLED display in it, that there are no big differences between AMOLED and OLED and that they can not officially provide me with an answer if I can put an AMOLED display in my Desire.
TL;DR
My question is: Can I buy an AMOLED display and put it in my Desire, which currently has an OLED display in it?
It seems weird, because I haven't read about anyone with an OLED display in their Desire and ebay shows nothing.
Any help is hugely appreciated!
There are only amoled and slcd displays. Obviously amoled implies oled. You cannot interchange them either. If you had slcd (backlit) then that's what you must have.
Perhaps contact HTC again as they or you are confused :s
Sent from my HTC Desire using Tapatalk
The screen was backlit with the original one in it and no backlight with the S-LCD. So I guess it's AMOLED? Thanks for your help.
humi1090 said:
The screen was backlit with the original one in it and no backlight with the S-LCD. So I guess it's AMOLED? Thanks for your help.
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Depends if you're using the word "Backlit" correctly. OLED screens are not Backlit. Hint, LED = Light Emitting Diode. Each pixel emits its own light. LCD IS backlit, meaning light is shone through the pixels.
rootSU said:
Depends if you're using the word "Backlit" correctly. OLED screens are not Backlit. Hint, LED = Light Emitting Diode. Each pixel emits its own light. LCD IS backlit, meaning light is shone through the pixels.
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OK, I'm using it wrong in that case. That makes sense. I mean that the screen seemed to turn on, even though it was all black.
humi1090 said:
OK, I'm using it wrong in that case. That makes sense. I mean that the screen seemed to turn on, even though it was all black.
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That sounds like backlit. A pure black display on OLED will not emit any light. The pixels display black by remaining turned off. Unlike LCD, where even to make black, it emits light as the backlight is on for all pixels.
rootSU said:
That sounds like backlit. A pure black display on OLED will not emit any light. The pixels display black by remaining turned off. Unlike LCD, where even to make black, it emits light as the backlight is on for all pixels.
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The word I got from HTC Sweden was that my display was OLED. I'm almost more confused now.
Boot up the device, connect it to PC and start adb shell.
Type the command:
Code:
dmesg | grep panel
That should tell you what you should have.
So I am coming from an LCD screen to the Nokia's Amoled screen and I am curious on Amoled screen is the white supposed to be a "rainbow" color? Like on my LCD screen White is well WHITE no other colors bleeding through. On this amoled screen I am see like a rainbow of colors behind the white like reds, blues, etc it's till white sort of but not as crystal white as the LCD.
Is this by design and something I should get used to? I thought Amoled was supposed to be better...
Laquox said:
So I am coming from an LCD screen to the Nokia's Amoled screen and I am curious on Amoled screen is the white supposed to be a "rainbow" color? Like on my LCD screen White is well WHITE no other colors bleeding through. On this amoled screen I am see like a rainbow of colors behind the white like reds, blues, etc it's till white sort of but not as crystal white as the LCD.
Is this by design and something I should get used to? I thought Amoled was supposed to be better...
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Whites on Amoled appear to be off-white. It's been this way with every Amoled device. I've never seen it to appear "rainbow" colored.
Amoled produces richer more saturated colors and outstanding black levels.
LCD and SLCD is a lot brighter than Amoled (hence the crystal white) but the black levels do not compare.
Before my 900, I was an SLCD fan. But Amoled with the clearblack looks like SLCD on steroids. Minus the lower white levels. Of course this is just my opinion.
So it's possibly just the ultra saturation bleeding through the "whites" that give it the "rainbow" effect. I don't know how else to to describe it. White is simply no white but like a multi spectrum white with other colors bleeding through.
Looking at mine right now the white looks pretty darn white.
The thing I have noticed is for instance when I bought a samsung focus I was torn between it and two HTC Devices... I forget the names. Both were SLCD. I just COULD NOT get past the washed out look of the HTC devices over the samsung.
The nokia is even richer in color than the samsung.
hx4700 Killer said:
Looking at mine right now the white looks pretty darn white.
The thing I have noticed is for instance when I bought a samsung focus I was torn between it and two HTC Devices... I forget the names. Both were SLCD. I just COULD NOT get past the washed out look of the HTC devices over the samsung.
The nokia is even richer in color than the samsung.
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Agreed - I've had the Focus, HD7s, and now the Nokia 900 and the Nokia is so far my favorite. I feel I should point out that the 'Nokia Blue' theme is sharper than the default windows phone blue theme, making the other devices appear washed out when in fact it's the correct color.
But the ability to use the device outdoors was a huge factor in my selection, certainly.
I like all the colors in the amoled except white. White really looks washed out compared to LCD screens and this is the only disappointment I have with amoled screens.
the benefits of an amoled are color saturation, deep rich blacks, and energy consumption on non-white backgrounds
SLCD create more "accurate" colors, that some see as washed out - generally are a bit brighter (lumens) and more white whites
the amoled produce off whites - if you compare the two, but you should not really notice it on an amoled unless you compare it to a true white
also, off angles can produce a slight blue hue to the whites
to each his own - I prefer the amoleds blacks (with the WP7 metro themes), to the washed out colors of an SLCD - but that does not mean you or someone else will too
could it be that your screen might be dirty?
i know on mine if i have some water or oil on the screen it will create a prism effect, which will rainbow the colors, especially with a white screen.
personally i haven't seen whites get a rainbow effect, but they are a little dim, which could be partly due to the screen tech (amoled) and could also be the hardware dimming them intentionally to save on battery (white is a battery killer on amoled screens)
but the inky blacks and pop of color from amoled makes me not really care, as the screen looks brilliant.
and the clearblack display on the nokia is great in the sun.
rainbow colors are only suppose appear on pentile displays. this phone has a true rgb screen so i dont see why
Nissan350 said:
Whites on Amoled appear to be off-white. It's been this way with every Amoled device. I've never seen it to appear "rainbow" colored.
Amoled produces richer more saturated colors and outstanding black levels.
LCD and SLCD is a lot brighter than Amoled (hence the crystal white) but the black levels do not compare.
Before my 900, I was an SLCD fan. But Amoled with the clearblack looks like SLCD on steroids. Minus the lower white levels. Of course this is just my opinion.
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AMOLED does not inherently have dim whites. Samsung just programs a dimming condition into the firmware on some its AMOLED panels that make it dim the brightness based on the % of white pixels on the screen (as a sneaky way to improve battery). The Focus S has an extra setting that lets you disable this, but the L900 does not have that setting.
drleospaceman said:
AMOLED does not inherently have dim whites. Samsung just programs a dimming condition into the firmware on some its AMOLED panels that make it dim the brightness based on the % of white pixels on the screen (as a sneaky way to improve battery). The Focus S has an extra setting that lets you disable this, but the L900 does not have that setting.
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I see. Bummer
A dim AMOLED screen also helps prolong the panel life span a lot. AMOLED screens are extremely prone to burn in. Avoid extreme brightness and avoid leave screen on for extended period.
Just remember this: it is very easy to bump up a screen's brightness (brighter back light on LCD) but it is extremely difficult to produce true blackness on a screen. The strength of AMOLE is the true black because it has no back light. Each pixels emit light. Darker black = higher contrast. No LCD can ever match the black level of an AMOLED screen.
foxbat121 said:
A dim AMOLED screen also helps prolong the panel life span a lot. AMOLED screens are extremely prone to burn in. Avoid extreme brightness and avoid leave screen on for extended period.
Just remember this: it is very easy to bump up a screen's brightness (brighter back light on LCD) but it is extremely difficult to produce true blackness on a screen. The strength of AMOLE is the true black because it has no back light. Each pixels emit light. Darker black = higher contrast. No LCD can ever match the black level of an AMOLED screen.
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i wouldnt keep saying that lol, htcs IPS SLD 2 can almost match against the blacks of a super amoled and has better colors all around without having to be pentile. unless you were to compare side to side you would be completely happy with the blacks on the one x.
edit: http://www.engadget.com/2012/04/05/htc-one-x-vs-one-s/ compare the blacks, barely a difference unless you were looking hard
i would go with the ips slcd 2 anyday considering no burn, great viewing angles, great battery life especially whites and cloes to as good battery life on blacks, visable outdoors, realistic looking colors/not over saturated, etc. its a balance between good blacks, and good whites. still wouldnt touch the one x though
^^^ above poster have never used an amoled display
slpin said:
^^^ above poster have never used an amoled display
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I most definitely have. from samsungs first amoled screens the behold 2. and both gens of galaxy s.
and i take it you have used the one x? no? since its the only phone with the IPS SLCD "2". not talking about regular SLCD, i have the amaze and the blacks look like crap.
almost every reviewer that has had their hands on nearly every android handset has stated its the best screen they have seen. just my 2 cents.
LCD is growing, OLED is still failing with screen burn.
also, im no htc fanboy (anymore). i really want the lumia 900 actually
Any reviewer says SLCD2 is better or equal to AMOLED has no clue what they are talking about. For the most part, they equal high brightness to better display. Read those reviews carefully. They are probably the same idiots who prefer LCD TVs to Plasma TVs. They made no scientific measurements of the contrast ratio of the screens. So, basically they are simply talking out of their a**.
Yes, LCD has more accurate colors. But it can never have better or equal blacks. There is no way to make LCD panel to block backlight completely.
foxbat121 said:
Any reviewer says SLCD2 is better or equal to AMOLED has no clue what they are talking about. For the most part, they equal high brightness to better display. Read those reviews carefully. They are probably the same idiots who prefer LCD TVs to Plasma TVs. They made no scientific measurements of the contrast ratio of the screens. So, basically they are simply talking out of their a**.
Yes, LCD has more accurate colors. But it can never have better or equal blacks. There is no way to make LCD panel to block backlight completely.
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I guess almost every reviewer that has reviewed this phone talks out of their ass, technobuffalo, engadget, phonedog, telegraph? lol, nearly every review that i have read said that. people who love the galaxy s 2, and both aaron from phonedog and john from technobuffalo used the note as their daily and preferred the one x screen.
just because the blacks are one notch off doesnt mean it's not superior. considering it will have better battery life, much more accurate colors, sharper images (when compared to pentile especially), no screen burn (plasma tvs have that horribly, so id stick with my lcd tv). blacks arent the most important color on a phone lol, and i never said they are better or as good. they are pretty damn close though. especially for being a LCD. after seeing screen burn on plasma tvs and oled screen its hard to say id rather have one. people who want a little bit more black screens are okay with screen burn?
and horrible whites?
also, people who dont stay in a cave all day. the ones who go out side, ips is far superior lol considering you have grea viewing angles and its completely viewable outside.
compared to the galaxy nexus the blacks almost looks exactly the same.
i would rather have amoled screen on wp7, but on android i would probably rather have the sld2
http://www.engadget.com/2012/04/13/lg-renames-optimus-lte-to-optimus-true-hd-lte-disses-samsungs/
look at this photo: http://i43.tinypic.com/2wn7jfd.jpg
you can barely tell a difference between the menu dots and the bezel. opposed to other lcds. it could be comparable to amoled defintely.
outside photo with low brightness: http://i44.tinypic.com/ipqgzs.jpg
still compeltely visible
overal its all about personal preference, but im sure saying that the new screen is comparable and would even be hard to choose from even over super amoled. i was about to ditch LCD honestly (my amaze has horrible blacks) before seeing this screen. too bad its not in other phones.
Screen quality better be left to those know how to compare, e.g. those who review hdtv for a living. lmao the stuff you quoted above.
Remember, contrast ratio = brigest / darkest. The slight difference in black level significantly changes the contrast ratio. Not so much on brightness.
Yes, there are magic coatings on LCD screens that make them appear dark then actually is. The problem is such coating could cause black crush or false contour. Of course those phone reviewer didn't test those important aspect of PQ of a panel, did they?
Sent from my SAMSUNG-SGH-I777 using XDA
foxbat121 said:
Screen quality better be left to those know how to compare, e.g. those who review hdtv for a living. lmao the stuff you quoted above.
Remember, contrast ratio = brigest / darkest. The slight difference in black level significantly changes the contrast ratio. Not so much on brightness.
Sent from my SAMSUNG-SGH-I777 using XDA
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Not really something to even think about. OLED hasnt been seen on a mobile devices over WVGA resolution WITHOUT pentile, we all know pentile sucks. colors, sharpness, etc. we have HD screens with IPS completely sharp, great colors, etc. just my 2 cents
http://i-cdn.phonearena.com/images/articles/48137-image/100-Crop-Red.jpg <- pentile
you dont need to review tvs to know if a mobile screen is good or not. these people have had their hands on nearly every android/wp7/blackberry/wm6 handset. pretty sure they have some say, especially for engadget always hating on every company besides apple then says the one x has the best screen they have seen lol.
both AMOLED/SAMOLED, and IPS SLCD have 16m colors. except the IPS has better viewing angles, no screen bleed, able to see the screen outside, whites to look blue, etc. you dont need to be a reviewer to know which is better.
unless your like everything on your phone to be black, and nothing but black then i dont see the point of saying oled is better just because the blacks are a notch better..
on different OS i would prefer different types of screens. LCD would be crap on wp7 i think unless you used whites a lot. we have yet to see IPS SLCD on wp7 i dont ever think we will. on android though i and other people like having high resolution, good looking colors, etc. cant have that with amoled unless you like pentile. wvga doesnt cut it with android anymore
take a look at the nokia 701, has lcd with clearblack and the blacks look great one it.
FYI, iPhone 4/4s has IPS screen and yet it looks hazey and has the lowest contrast ratio among almost all smartphone screens. IPS maybe better than other LCD screens. But it is still LCD screen. It is physically not possible to completely block the backlite. Otherwise, we don't need local dimming technology on high end LCD TVs anymore.