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-   -   Touch Pro Screen Burn In (http://forum.ppcgeeks.com/showthread.php?t=42793)

Gforce 11-02-2008 11:02 PM

Touch Pro Screen Burn In
 
The unlock keypad seems to be burnt into the screen slightly on my 8 day old Touch Pro. Seems od for an lcd screen on a high end phone.It's not too bad I do have to look for it but it is there. Anyone else?

mikee4fun 11-02-2008 11:16 PM

Re: Touch Pro Screen Burn In
 
You are wrong, you can burn in LCD. To prove this go to the store and buy an LCD monitor. Leave a static image on it and set the contrast and brightness up all the way. Leave it on for a week and then report back. =P

Cheers,

Mikee

AH, the other poster deleted his post. Haha.

On another note:
I would return it to the store for a exchange. Make sure you set your phone to turn off while plugged in. Also turning down the brightness will help.

jayrodclg 11-02-2008 11:24 PM

Re: Touch Pro Screen Burn In
 
you cant have "burn in" on an LCD, there is nothing to "burn". on CRT, rear-projection and plasma tvs they actually etch or burn the screen where the image is displayed or projected. a LCD is a series of "doors" that open and close in a manner that when the backlight passes through these open "doors" our brain puts it together as an image.

Baffles 11-02-2008 11:29 PM

Re: Touch Pro Screen Burn In
 
LCDs can burn in like that, though it isn't a permanent burn like it would be on a CRT. The correct term for it in this case isn't burn in though, but rather image persistence. With normal use, the 'burn in' should fade out fairly quickly. If it bugs you that much, make sure your screen doesn't sit displaying the unlock screen for long periods of time. Letting the phone display a white image for a while should also make it disappear. It's not worth returning the phone over in the slightest, and the same issue will occur on any phone you get. Unless you let it display ONLY the unlock screen for like... years without changing, it isn't permanent.

Yay 4 Juggs 11-02-2008 11:33 PM

Re: Touch Pro Screen Burn In
 
i woke up with the same problem yesterday...as soon as the store opened i exchanged it

Gforce 11-03-2008 12:16 AM

Re: Touch Pro Screen Burn In
 
Yeah I may have had the option to have the screen dim when locked or something. pretty stupid feature if it's that bad for the screen. Gonna wait and see if it goes away but other than that it will happen on a new phone too. I can see the top and bottom bars on the screen too.Also I didn't mean that LCD's don't burn in. I mean It seems harder to get some image retention on my plasma. Just seemed odd still a great phone.

Gforce 11-03-2008 08:19 AM

Re: Touch Pro Screen Burn In
 
I got to thinking on this one and I don't know if it would help but might it make sense to try to break in these screens a little when they are new. I'm no expert on LCD displays but I do know that on my plasma I had to be extra careful when it was new to break it in with no static images for the first 50 hours of use.

I don't know if it would make sense to run some sort of test pattern program for a couple nights on a new phone when it's charging or something just to break in the screen evenly and possibly reduce the IR.

Just a thought like I said before the Image Retention is not killer but it is there.

Anyone out there know of a small test pattern program that might run on out phones? I could give it a shot and see if it helps any at least.

schettj 11-03-2008 09:20 AM

Re: Touch Pro Screen Burn In
 
Uh. Seriously, there is no such thing as LCD burn in.

Plasma, yes.

LCD, no.

http://compreviews.about.com/od/moni.../LCDBurnIn.htm

Even persistence is unlikely unless you somehow left the screen on for a week or more with a static image.
Quote:

It is very unlikely for a consumer to have this happen as it is more likely to happen in a fixed display such as those seen as display boards for businesses that do not change.

Palladium 11-03-2008 09:41 AM

Re: Touch Pro Screen Burn In
 
I concur, LCDs do not burn in, but a quick question, do people really leave the screen on when they're not using it?? It seems to me that if you just put the thing to sleep the problem is solved. :scratch: (and it significantly improves battery life)

cornelious2 11-03-2008 09:43 AM

Re: Touch Pro Screen Burn In
 
+ 1 for making the phone sleep when not in use.

superevilllama 11-03-2008 09:44 AM

Re: Touch Pro Screen Burn In
 
well.. i suppose it can happen.

Have you ever been to the sprint store and their big LCD with names of people has SPRINT somethign or other burned into it? you can see it against the yellow background.

Gforce 11-03-2008 10:20 AM

Re: Touch Pro Screen Burn In
 
Quote:

Originally Posted by schettj (Post 493114)
Uh. Seriously, there is no such thing as LCD burn in.

Plasma, yes.

LCD, no.

http://compreviews.about.com/od/moni.../LCDBurnIn.htm

Even persistence is unlikely unless you somehow left the screen on for a week or more with a static image.


I completely agree that LCD screens do not burn in. Now that said mine has lol. I don't know what the deal is with mine but I do know that when I first had the phone the unlock keypad was on all night a couple times. I didn't think of it cause like we established the rule of thumb is that LCD's don't burn in so no big deal right.

All I know is if I but on a black screen in a dark room I can kind of sort of see the keypad and Plainly see the black bars on the top and bottom of the screen.

I'm confused as to how it happened. I now make sure that the screen is off when charging and just sitting and so on.

Baffles 11-03-2008 10:48 AM

Re: Touch Pro Screen Burn In
 
Quote:

Originally Posted by Palladium (Post 493143)
I concur, LCDs do not burn in, but a quick question, do people really leave the screen on when they're not using it?? It seems to me that if you just put the thing to sleep the problem is solved. :scratch: (and it significantly improves battery life)

Mine kicks in and out of roaming all night, and the screen doesn't turn off on its own it seems while it is charging. I never changed any options, so usually mine ends up displaying the S2U2 charging screen all night.

Quote:

Originally Posted by Gforce (Post 493204)
I completely agree that LCD screens do not burn in. Now that said mine has lol. I don't know what the deal is with mine but I do know that when I first had the phone the unlock keypad was on all night a couple times. I didn't think of it cause like we established the rule of thumb is that LCD's don't burn in so no big deal right.

All I know is if I but on a black screen in a dark room I can kind of sort of see the keypad and Plainly see the black bars on the top and bottom of the screen.

I'm confused as to how it happened. I now make sure that the screen is off when charging and just sitting and so on.

It's just image persistence. Leave your phone displaying a totally white screen all night, and it should mostly go away. Might take a couple nights to be perfect.

schettj 11-03-2008 03:09 PM

Re: Touch Pro Screen Burn In
 
Quote:

Originally Posted by Gforce (Post 493204)
All I know is if I but on a black screen in a dark room I can kind of sort of see the keypad and Plainly see the black bars on the top and bottom of the screen.

Yes, that sounds like a totally normal use scenario :p

So, uh, you don't have it set to power off after 3 minutes on AC? You probably should try that.

jmhart 11-03-2008 03:24 PM

Re: Touch Pro Screen Burn In
 
For most LCDs, leaving the display off or displaying a full screen display of black (0,0,0) for the same duration as the image that is now persistent will clear it up. If that doesn't remedy it, you can try alternating between 100% white and black every few minutes until the persistent image is cleared.

I've had several LCD projectors that had issues with this "pixel memory" or persistence issue and was always able to remedy it using this simple fix.

Darkjedi 11-03-2008 03:58 PM

Re: Touch Pro Screen Burn In
 
for LCD's its not called burn-in but rather ghosting or image-persistance. The good thing about LCDs is that ghosting is typically revertible as there are abunch of programs online that tries to 'reset' your pixels by flashing all the base colors in rapid order. I had a LCD I had to get replaced by Dell because of a horrible ghosting problem. The thing about my Dell monitor was that I think the lamp was malfunctioning and overheated/ruined the top bar of my LCD and created more or less permanent ghost image of the close/minimize bar of my windows. It would be really obvious on a white background.

DexterDawg 11-29-2008 09:06 AM

Re: Touch Pro Screen Burn In
 
Quote:

Originally Posted by schettj (Post 493114)
Uh. Seriously, there is no such thing as LCD burn in.

Plasma, yes.

LCD, no.

http://compreviews.about.com/od/moni.../LCDBurnIn.htm

Even persistence is unlikely unless you somehow left the screen on for a week or more with a static image.

I'm sure you felt good after writing that post, truth is people know it as burn in, including sprint.

I also am the proud owner of a phone that displays my locking screen all the time. Here's the interesting thing, my 700wx, 6800, 6900 all had the screen on while charging and never had this issue.

Someone said it's not a reason to return the phone? I am not going to run screens of base colors on the most expensive phone I've ever owned to try to fix the problem myself. Mine goes back tomorrow.

Also, look at most grocery store check out monitors, the trains on the strip in Vegas, or other places like the Sprint store. This is much more common than you think. However my Touch Pro is less than a month old. I'm very unimpressed with the screen now.

Talyn 11-29-2008 11:51 AM

Re: Touch Pro Screen Burn In
 
Anything with plastic can burn in.
your not burning in on the crystal display, your burning the image into another "portion" of the layer.
I've seen many LCD's with burn in.

No screen problems here.
Mine is usually off if i can muster it.
But s2u2 is locking apps off when the phone goes into standby now, so i might have internet connection screen burned in if i keep it up.

Exil3d 11-29-2008 12:40 PM

Re: Touch Pro Screen Burn In
 
Your the second person that has brough up this issue. So I imagine the screen does burn in. Remember this is not a qvga scree. its a different beast all together. So these anomalies will come out and be future issues. Now that i think about it I think this is the only device that sports a vga screen at 2.8.

samshady 12-05-2008 09:58 AM

Re: Touch Pro Screen Burn In
 
I swear it looks like mine does come and go.I try not to leave the screen on when not in use due to battery issues. But it does concern me that I never had this probelm with my 6700 or my 6800. I don't know if it is worth taking back but, being that I'm in the first 30 days I would get a new replacement. If I wait and it gets worse then I increase my risk of getting a refurbished through TEP. I have had refurbished phones before and they normally work fine. It's the fact that I paid a pretty penny for this phone and its not a month old I don't want a refurbed replacement the first few months I own the phone.

FrozenIpaq 12-05-2008 11:17 AM

Re: Touch Pro Screen Burn In
 
Um, there is such a thing as LCD Ghosting and all those that say different are wrong.

However it's not called burn-in, but rather image persistence. It occurs when you leave a still image on a LCD for an extended period of time. There's a potential fix for this:

1) Create an all-white picture
2) Turn down your brightness on your device (must be on, but just slightly)
3) Leave the all-white picture displayed until the persistence is gone (generally a few hours I believe).

This is an uncommon issue and is the reason why you should never leave a still image on your screen for an extended period of time

cornelious2 12-05-2008 11:42 AM

Re: Touch Pro Screen Burn In
 
honestly I am so anal about turning off the screen the second I am done using it I doubt that could ever happen to my phone. I remember with the first gen lcd tvs they used to sell a dvd that flashed each pixel like crazy for a while that fixed the image persistence. I wonder if finding a copy of that and running it in full screen for a while would do the same.

Baffles 12-05-2008 12:21 PM

Re: Touch Pro Screen Burn In
 
Quote:

Originally Posted by Talyn (Post 549048)
Anything with plastic can burn in.
your not burning in on the crystal display, your burning the image into another "portion" of the layer.
I've seen many LCD's with burn in.

No screen problems here.
Mine is usually off if i can muster it.
But s2u2 is locking apps off when the phone goes into standby now, so i might have internet connection screen burned in if i keep it up.

There is nothing to burn. In CRTs, it was the phospher that was burning int he image. There is no heat, no electron beam, nothing to cause damage/burning. It is just image persistence, and it will go away. Kind of like when someone takes a picture of you with a bright flash and you can still see the flash for a little while when you blink. Same idea.

LuVar 12-30-2009 10:09 AM

Re: Touch Pro Screen Burn In
 
My hint is to slide out keyboard (display will rotate home screen of HTC touch flo) and to put device to sleep (and probably close slider back to normal, it will keep sleeping). Try to have it like this one night and than turn display on. You will notice that icons and mainly white text of phone or action button at botton left (upper left) will be "burned-in".

Imho the burning process (or persistent image process creation) is also active if device is in sleep mode. Probably some bug in drivers, or graphics card? Do someone else have noticed this behavior?

Also when you immediately restart phone, you can see that persistent image in boot screen. So it is not sw problem, but hw, like written in previous posts.

PS: I dont see the bug, I see just telephone with some OS which has more bugs than hardware problems :-)

Mylt1 12-30-2009 03:56 PM

Re: Touch Pro Screen Burn In
 
luvar, you do know this post was from over a year ago, right?

LuVar 01-03-2010 08:29 AM

Re: Touch Pro Screen Burn In
 
Quote:

Originally Posted by Mylt1 (Post 1448649)
luvar, you do know this post was from over a year ago, right?

Jop, I know it, but google will find this old post when searching for this "problem", so I want to make this info here visible :-)


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