yashsingh1/xdaforums huggingface dataset:
[Desire Accessories] bemymonkey:
@Upspin

You're right, of course - both have their upsides. I just don't understand why you'd want your screen to show "unreal" colors. Might look better when you're just looking at the homescreen or icons, but what about watching video or looking at photos? I hate the way people (skin tones) look on my AMOLED Desire :(

As for battery life, there really is no contest when it comes to things like web browsing. Since most web sites use dark text on bright backgrounds, the power consumption with AMOLED displays goes through the roof... CyanogenMod has added color inversion to the browser to help, but that makes the scrolling in the browser choppy, and I like Dolphin HD ;)
[Desire Accessories] UpSpin:
You just have to understand how a LC and an AMOLED Display work. Both work totally different.

On an AMOLED each pixel emits light on their own. Thus, dark pixels consume zero energy, red 1/3, green 1/3, blue 1/3 and white all of them combined. With the pentile technique it's not 3*1/3, but a bit different, not that important.

A LC, just as the name implies, consists of Liquid Crystals. The easiest structure is TN (Twisted Nematic). The principle is simple. You have a white background source, which consists of blue, red and green light. Together it appears white, easy. This background light is on, the whole time, regardless if you display black or white content on the display. But how do we get colors and black and white? Now you just have to place a (1) polarizer, (2) an array of Liquid Crystals, and a (3) second polarizer, which is rotated by 90 degree in relation to the first, in front of this light source.

To keep it easy we use a TN structure.

Without any voltage applied to our LC, the light from the background source passes the (1) first polarizer and gets linearly polarized. Then it passes the (2) LC, gets rotated by 90 degree by the twisted molecules and passes the second polarizer, and you see white light.

With voltage applied, the molecules in the LC get rotated, so they aren't twisted any longer. Now light passes the first polarizer and gets polarized again, passes the LC without getting rotated this time, thus gets blocked by the second polarizer and it appears black to you.

So finally:

A LCD has an always on background light. However, black needs more power because you have to apply a voltage to a liquid crystal, and a leakage current causes the power draw. White however needs less power, because you don't have to apply any voltage.

However, I think this effect gets really interesting if you have large displays or a high number of pixels.

Several magnitudes more power consuming is the background light.

hehe, and I love it ;) Love the deep black in dark movies and the saturated colors. Skin tones, didn't noticed some odd tones yet.

Yup, true. I have to life with this drawback. Not that huge in my opinion, because battery life is fine for me. I recharge every day, regardless how full/empty my desire is, so really, I don't care that much if it consumes a bit more or less.

But nice tip with the color inversion mod, great for night browsing. :cool:
[Desire Accessories] bemymonkey:
I need all the battery life I can get - almost never make it through a full day :(
[Desire Accessories] shoemeistah:
I'll just stay with the SLCD if it doesn't make a really big difference anyway.

Recharging your phone every day? I always wait till the battery is drained almost completely then recharge till 100% full because that is supposed to be better for your battery.

Might just add a poll just to see ratings between what favors people the most hehe.
[Desire Accessories] ljesh:
You see, battery lasts longer with AMOLED. Your Desire has SLCD so that is why you cannot make it through a full day :D

I have to agree with UpSpin, I like the colors/tones of AMOLED. On my phone I don't really need to have proper interpretation of colors.

As for the OP, if that was me, I would be staying with the SLCD.
[Desire Accessories] bemymonkey:
Actually I have AMOLED :(

My last LCD phone (Milestone) had better battery life when in use, because I mostly use the phone for web browsing...
[Desire Accessories] foxmeister:
That could equally well be due to the underclocked processor.

I've yet to see any objective comparison between the battery life of an SLCD Desire and an AMOLED Desire, which is the only true way to tell.

Personally I believe there is a little bit of spin from HTC concerning the "benefits" of the SLCD screen, because I'm fairly certain they'd still be using AMOLED if there was adequate supply. However, it could equally well be that the Sony SLCD screens are more expensive than the Samsung AMOLEDs, which would explain why HTC would rather stick with AMOLED.

I have two Desires - both with AMOLED screens. I'd be happy to swap one of them for the SLCD version just so that I could personally determine which is better, though I already know that I *love* watching movies on the AMOLED screen with its deeps blacks and vibrant colours.

Regards,

Dave
[Desire Accessories] foxmeister:
The results of this sort of poll are always going to be deeply flawed.

The majority of posters will not have seen and tested the two versions side by side, and so will usually just vote for whichever screen type they have.

I declined to vote because I've not seen the SLCD Desire, and a few videos on YouTube are no substitute for actually playing with one in the flesh.

Regards,

Dave
[Desire Accessories] bemymonkey:
It's been well established that AMOLED uses more power in a web browsing scenario. Check out the Froyo Battery Usage testing thread... th3, Andycted and I hashed it out very in-depth there.
[Desire Accessories] foxmeister:
So? There are going to be scenarios where the reverse is true. Whilst I do use my phone for web browsing, I use my Desire more for other applications, video, and music, so perhaps for my particular usage, the AMOLED is going to consume less power - I don't know!

If I was focusing purely on power consumption, what I really need to know is the difference in power consumption in a variety of scenarios - not one that is always going to favour an SLCD because most browser backgrounds are white.

In addition - as far as I'm concerned, it's not all just about power consumption. There are plenty of other factors at play here. Personally, video playback is important for me, and the AMOLED Desire is by far the best mobile viewing experience I've had because of the AMOLED screen. Pentile is not a factor for me because whilst I do have perfect vision, I don't hold the phone so close to my face that the pentile "jaggies" are actually visible to me in general use.

I'm not trying to big up AMOLED because that is what I have, and denigrate SLCD because I don't, but I've yet to see any proper objective tests.

Regards,

Dave
[Desire Accessories] bemymonkey:
Note that I specifically stated in a web browsing scenario - that was in no way a statement about general power consumption ;)

You may have different priorities, of course, but the web browsing with bright backgrounds scenario describes my needs quite well.
[Desire Accessories] foxmeister:
Oh yes - it is definitely horses for courses! :)

As I said before, I've not actually seen an SLCD in action, so I can't really comment, but what I can say for sure is that I much prefer the AMOLED screen on the Desire to the IPS screen on the iPhone 4 which looks quite washed out to me in comparison, and didn't seem to be appreciably better in sunlight either (and that's not a knock at the iPhone - just an opinion).

Regards,

Dave
[Desire Accessories] bemymonkey:
I would LOVE to have the iPhone4's screen... photos look so incredible on there, as does text. Really is a matter of taste, it seems ;)
[Desire Accessories] artukas613:
We already established, that is up to personal preferences.

But how about hardware? Is it possible to change SLCD to AMOLED and vice versa.

Does anybody knows about that? Is it the same connectors, mainboard?

:)
[Desire Accessories] shoemeistah:
That's what I have been asking myself too.

I think we just need to try it ourselves... 'cause I can't find a lot about it.

It should work on the same connectors with the white line. Just take a picture of it to remember how it was connected.
[Desire Accessories] chris2busy:
Guys i have no idea how to back this up, but the other day when i was fooling around in the shop in the mall(gf was across the hall shopping undies so i had tons of time to kill) there was a plugged desire that was the AMOLED version , you can really tell the difference with the colours (although to my liking true colours are better looking,anyway), i noticed something really weird..The resolution on my desire (S-LCD) when i held them each next to each other looked higher..i was truly confused by this..i mean even the curves of the titles on app names and everything were sharper, it really looked higher res..is that any relevant or was it that the shop display model was simply way too worn out from public usage?
[Desire Accessories] foxmeister:
It's probably due to the sub-pixel rendering on the pentile display used on the AMOLED Desire.

Regards,

Dave
[Desire Accessories] bemymonkey:
Correct. THe Pentile-Matrix AMOLEDs used on the Desire have a subjective resolution somewhere around QVGA even though they're actually capable of displaying WVGA.
[Desire Accessories] shoemeistah:
Nobody here who has tried to switch (S)AMOLED to SLCD before?

If so I need to be the first one to try it haha.
[Desire Accessories] !PANDA:
Hi, before you do do it try this.. take the phone appart just to see which connectors you have, I;ll post a pic (off my Desire's AMOLED (genuine, the broken one) connectors, and if they're the same you can buy the screen instead of just wasting that £50 :)
[Desire Accessories] shoemeistah:
Sorry to bring bad news because I haven't rooted my phone etc. because I just don't need to.

When I got the phone it already had 2.2 with app2sd option.

More and more apps become available to be moved to the sdcard.

So I think it's a bad idea for me to be screwing out the 'void' screws to do unauthorized replacement of the screen which removes my warranty?

Obviously also if I want to check the connectors it needs to be opened.

I'm happy with my SLCD with true colours, each has it's advantages.

But I'm still curious about the connectors, so if anybody else wants to take a picture, please do it here.

Thank you!
[Desire Accessories] !PANDA:
just got an FC on the XDA app while trying to attach a pic! I'll edit this post tomorrow and add it, sorry can't find my USB :P

And yeah, if you do take the stickers off you do lose your warrenty.

xx
[Desire Accessories] shoemeistah:
I've uploaded a disassembly video showing a LCM (LCD). :p
[Desire Accessories] !PANDA:
did you make that video?! nice work anyway! Also is that the AMOLED or an SLCD version? the connectors seem to be the same its just he pins that could be different!
[Desire Accessories] UpSpin:
OLED vs. LCD, technical difference:

An OLED display requires a low voltage (maybe something around 2.5V) for the controller and components, but it also requires a high voltage (most often around 12-16V) for the OLEDs itself.

A LCD however, requires the same low voltage for the controller and a little higher voltage (something around 3V) for the backlight.

So the key difference is the power source. It's most likely that HTC had to change the whole PCB in order to fit the new different power requirements.

If this got handled otherwise or the power converter is integrated on the display PCB itself (also very common) then it should be possible to change the display, because they will use the same interface, just need a different driver (different controller) which is integrated in the new Kernels.

PS: Thank you for this great video
[Desire Accessories] shoemeistah:
I think it is a SLCD because it shows LCM which stands for Liquid Crystal Display Module. Because AMOLED (Active Matrix Organic Light Emitting diode) doesn't use liquid etc.. Another technology. AMOLED uses less energy and it's less heavy.

But after all I don't think it's worth replacing it if you own a SLCD version.

Remember it's not an LCD but Super LCD.

# First post updated (Added assembly/disassemble videos).
[Desire Accessories] bemymonkey:
That's just an urban legend... check out the Froyo battery use thread in the Desire General forum..
[Desire Accessories] shoemeistah:
Yes with SLCD.

I just quoted that part from HTC forum about the normal LCD hehe.

My point was actually to make clear what kind of screen was in the video.

Check the post #1.
[Desire Accessories] GoodLinux:
Dear all,

I have just receive my HTC Desire,

how could I know if my device screen is AMOLED or SLCD ?

thanks in advance for your answer.
[Desire Accessories] shoemeistah:
I think the most easiest way to distinguish AMOLED and SLCD is to check out the black.

If the black is really black, no light coming from it then it's most liekly an AMOLED.

How can you test this? By going to add to home or settings screen with the black background. If it's a little bit gray it's a SLCD. Again AMOLED's contrast is much better so it shows real black.
[Desire Accessories] GoodLinux:
Ok thank you for the answer,

I think I have the AMOLED Screen.

Regards
[Desire Accessories] BMelz:
xdaforums.com/showthread.php?t=761941

read the second post. How to know foe sure.
[Desire Accessories] mariosraptor:
from what i have heard the motherboards are very different. you can not put slcd to amoled motherboard and vice versa.
[Desire Accessories] GoodLinux:
Thank you for the answer,

I have checked on my Box,

specifications are :

Modèle : A8181

Affichage : Ecran tactil 3,7 pouces

there is no specification for the kind of screen AMOLED or SLCD.
[Desire Accessories] Beaverman20:
OMFG... this is the console wars, but for mobile phone displays... the difference is small, go with what you got, and stop flaming...
[Desire Accessories] actasci:
the bleeding backlight issue is enough to make slcd worthless for me. i prefer amoled.
[Desire Accessories] /rant/:
A friend of mine followed my suggestion to also buy the HTC Desire and she got the SLCD version. So, one day we're getting drunk and she put the phone on the table and I was like 'What the hell? Why is the screen so... dark and shady?'

With both phones on the table at full brightness, I agree that SLCD has a sharper image. However, AMOLED seems sharp enough to me - of course there is always more. But AMOLED is good, very good indeed. I'm not always experimenting with a magnifier to see the difference.

What definately is better are the colors. Tell me what you want, but AMOLED colors destroy SLCD colors. SLCD may have be more realistic, but gosh my AMOLED has the most vibrant colors a display can have. Realism is one thing, but I got bored of reality 10 years ago ;)

SLCD is nothing more than a display like the manufacturers put it into millions of phones every day. But to be fair, it might be a more mature technology and it doesn't look bad at all. However, in no way would I ever change my AMOLED into an SLCD.
[Desire Accessories] hamdir:
I'm willing to exchange my 1 month old amoled desire with slcd version
[Desire Accessories] shoemeistah:
Why is that? I know it's very poor in direct sunlight though.
[Desire Accessories] hamdir:
Amoled colors and contrast are very sexy

Most of the times the virtual resolution looks very Sharp but in the evening reading while lying down I can see the amoled pixels pattern and its starting to get on my nerves, I decided i prefer pure pixel density
[Desire Accessories] timrichardson:
sunlight

The AMOLED is very hard to read in (Australian) sunlight (nearly impossible).
[Desire Accessories] catdog:
No problem in cloudy Ireland!
[Desire Accessories] andyneouk:
I recently dropped and broke the lcd on my brand new slcd desire and tried to replace it myself with an amoled verison. Everyting is exactly the same, connectors etc but the screen doesnt appear to work (no sign off life from it, although the phone appears to boot). Any ideas/suggestions?

Thought i would post to let you's know that the connector on both screens is the same.
[Desire Accessories] shoemeistah:
Alright, thanks for sharing this!

Unfortunately I think this is still not possible because you'd need different code in the boot for the serial peripheral interface or some kind.

I'm not very familiar with AMOLED.

Hope there are any experts around here.
[Desire Accessories] andyneouk:
yeah i was thinking it would be an issue with the 'drivers' on the phone but ive read in serveral places that amoled's should work with any version of handset, including the slcd ones. but unfortnuatley this doesnt seem to be the case. :(
[Desire Accessories] tarun79:
I just broke my screen of desire which is slcd n I've been lukin for replacement very hard but cudn find it plz people need desperate help more so in Mumbai plz help whr cud I get it replaced.. thanks in advance
[Desire Accessories] led-zeppalike:
I sent my phone off for repair last week for a dead pixel. It was an original Desire AMOLED and they sent it back with an LCD screen. It's not a whole new phone because the MAC address is the same and there is a small scratch on the screen cover that was on my old handset.

So maybe you can change an AMOLED for LCD display.
[Desire Accessories] fridaycider:
they can be changed and works perfectly. just swapped a mainboard on a scld and amoled desire. straight swap.

to be honest if the slcd didnt have a slight yellow tint when looking head on i wouldnt notice much difference.very hard to tell..

but i would say that browsing web and using facebook app,texting ect with white background the amoled looses with battery consumption big time..
[Desire Accessories] shoemeistah:
Thanks for doing the 'experiment' on swapping the displays!

Now we can confirm it can be done, thank you.
[Desire Accessories] fridaycider:
its ok, it wasnt an experiment i had one with a rebooting issue and purchased another one second hand very cheaply, but when i arrived to pick it up i honestly thought it was an amoled version till i looked at the two next to each other and read the back of the box.

to be honest the first thing i did was swap mainboards over because it was one of the main reasons i bought the phone the amoled screen.

but now might switch back as the slcd is brighter and the difference in colours is minimal but the battery life i think is a drawback as alot of my usage is texting web facebook ect with white backgrounds. i have found amoled hammers the battery when doing all of these but slcd seems much better.

hope this helps people..

just to add, i dont know why this is but the touch screen on the slcd out performs the amoled one, it is very responsive and more accurate ..
[Desire Accessories] fridaycider:
just thought i'd add to this , upon close inspection of the phones the touchscreen pannel on the slcd sits slightly proud to the frame of the phone itself and it looks like they changed the trackpad as the center eye of the button sits out more it the centre and the eye is slightly bigger..

just thought i'd share these findings if anyones interested...
[Desire Accessories] jonsey:
can be changed the touch panel to solve the axis problem?
[Desire Accessories] bemymonkey:
Isn't that sold as pretty much one unit with the screen + glass, all glued together?
[Desire Accessories] fridaycider:
the touchscreen and glass are glued together but the display has some adhesive but its not that strong. very carefull but they pull apart without heat.
[Desire Accessories] Khyan:
Recenlty, I got mine back from repair (restarting loop). Besides motherboard, they replaced my AMOLED with S-LCD. Could anybody confirm that this wasn't necessary due to incompatibility of new motherboard with AMOLED screen as they explained me in the repair center?
[Desire Accessories] fridaycider:
can't see why they should change the display, the two i did them on the amoled version was about six months old and the slcd version was made around october and it was a straight motherboard swap..
[Desire Accessories] Khyan:
I have tried a few times to get the information from HTC directly, but every time they referred me back to the repair center. I cannot accept this story and I will try with HTC until I get right information.

It seems to me that somebody really wanted to have AMOLED in his phone. Here in Croatia everything is possible...
[Desire Accessories] fridaycider:
swap

well it does work i swapped them both ways without incompatibility , really can't see why they would swap displays if there is nothing wrong with the screen.

i wouldnt accept it if you purchased it because of the amoled screen..

and where do the old amoled screens go?
[Desire Accessories] shoemeistah:
I thought Samsung didn't deliver AMOLED screens for HTC Desire anymore because they were out of stock. But don't know about the situation now, maybe they just switched to SLCD because it's cheaper?
[Desire Accessories] /rant/:
From what I've seen, they have recently restocked on the old AMOLED HTC Desire. They are available again en masse at least here in Switzerland, and they sell both AMOLED and SLCD versions at the same time in the same shop locations, including online shops for CHF 459 (AMOLED) or a few bucks cheaper for SLCD.

And according to my buddy working at one of the major online shops in the country, they again sell more of the AMOLED version since it is available again - and they place new orders for more devices every few days.

:eek:
[Desire Accessories] Lennyz1988:
I've read the entire thread, but I just can't get my head around it...

1. I have a Amoled desire (Amoled is broken)

2. Can I just order a SLCD and replace?

I'm asking, because I don't fully understand the swapping of the motherboards.
[Desire Accessories] GabrielSousa:
my GOD

i would love to replace the housing... but its so complicated....
[Desire Accessories] Acerus:
For those who say that SLCD uses less battery for web browsing, have they considered using the "inverse colour" option in the web browser, that changes most backgrounds to black and texts to white?
[Desire Accessories] bemymonkey:
Unfortunately I am still trying to find a browser whose inverted color mode doesn't look like monkey butt :(
[Desire Accessories] goret54:
I've accidentally put a slcd screen on my amoled desire.

Since, i've a blank screen at startup with both screens (amoled and slcd).

I don't know if it's a slcd brick (Froyo 2.2 with custom rom) or real phone damage due to motherboad incompatibility.

(sorry for my english)
[Desire Accessories] immortal_plt:
Is it possible?
[Desire Accessories] Lord_Quack:
Was anyone else slightly annoyed by the voice-over patronising tone? :D
[Desire Accessories] ZillahGiovanni:
Oh... thank you for this great guide... add to hints
[Desire Accessories] wolfsy:
I bought a black htc desire house casing, and i been nervous for 2 month about changing it. but thanks to the videos and guide in this thread am finaly gonna try changing house casing. May the Schawrtz be with me.
[Desire Accessories] CreaB:
Thank you for the videos!

Using them, I successfuly replaced my standard housing with a white one today.
[Desire Accessories] eckengucker:
I've a lot of experience with swapping Desire screens. 2 days ago I had 2 desires (AMOLED and SLCD) on my table and couldn't remember which screen belongs to which device. So I was just testing and both Desires were still working afterwards. Swapping screens can't damage the phone. Try to plug of every module from your motherboard and than plug it in step/part by part

BTW: An AMOLED mainboard works with an SLCD screen but an SLCD mainboard won't work with an AMOLED screen.
[Desire Accessories] fancyfree:
Is there a way an SLCD mainboard to work with an AMOLED screen ???

I`m trying something but no luck...(It`s about Nexus One) http://xdaforums.com/showpost.php?p=46459719&postcount=9