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Backlight bleeding

Not that we expect all iPad 2's to have a problem, but as people tend to run to sites like this with issues and problems, let me state that mine (and not to rub it in) is fine.

No yellow glue, no light bleeding through.
 
Related to construction?

Its a shame. I was going to pick up 2 today. But I think I'll wait until this is addressed. It sounds like its a manufacturing issue as I have two iPad 1s and they don't have this problem. The tear down reveals that the thinner construction is achieved through glues vs. screws to bond the pieces. Could this be a flaw introduced with the rush to market deadline?
 
Mura

I just checked my iPad1 and put up a fully black page using Keynote with brightness up all the way and looked at it in the dark and sure enough it has mura along the edges where the display is held. I would say it is not a real problem unless you have a device that shows it bad enough to be visible with room lights on and the display is how you would use it. For my iPad I have to really go out of my way to see it. I plan on getting an iPad2. This is not a panel degradation of any kind.
 
It's great everyone saying their iPad's aren't affected and all, but could they kindly post such an image? It's not that we don't believe it, just that there isn't really such an image at the moment.
 
I hate to say it, but I think these types of problems are typical when you introduce an all new design. I had a very objectionable light leak on my launch day iPhone 4 which was promptly replaced with a better unit.

To those of you who are planning on exchanging your units, I would wait a few weeks. Apple obviously gave a passing grade to a lot of units it shouldn't have in the rush to get a large number of iPads to market. Also remember that the iPads are being assembled at multiple manufacturing facilities, and parts are sourced from multiple vendors due to constrained supplies. As time goes on, manufacturing tolerances will be tightened as reports of these defects get back to Apple. Units leaving one factory may have more defects than units assembled elsewhere and by another manufacturer. The final arbiter of quality, however, is Apple.

I believe these issues should be resolved in the next couple of months.
 
ovrlrd said:
Sorry dude but they just can't change the manufacturing process, they would have to change the design of the iPad to no longer be edge lit backlighting, and that just is not going to bleeding that is not really visible in most cases.
Click to expand...

And that's why I'll hang on to the one I've got. If I'd never seen this thread I'd never have even noticed the bleeding. I think for people who have obvious bleeding thats visible in a well lit room, exchanging is a must.
 
ovrlrd said:
Finally someone else who knows what they are talking about. Good post, hopefully will help explain to people what is going on.
Click to expand...

Ah, since it's been explained everyone now should just accept it and not complain. Oh yeah and never watch movies or use the ipad with the lights off. Sounds simple enought for a 500+ piece of equipment from Apple.
 
forgive me if someone did and I missed it, but lots of people are saying it's a big deal, and lots are saying it isn't.

I think it'll be pretty rare that I look at an ipad with a black screen at 100% brightness in the dark. so can someone take some pictures with a movie playing or something (a dark scene, black bars, etc) to show how bad/good it looks in dark scenes in real world conditions?

Thanks!
 
Robphoton1 said:
The only problem with knowing about mura is that now that you are aware of it you will be seeing it everywhere, as it is pretty common. Just go down to Best Buy and look at an LCD TV in a black state in a dark room. Most people don't care about it and don't notice it. I suspect you will find it on iPad1, but iPad2 may be more prone to it because it is thinner, making it easier to stress the glass by flexure, causing stress birefringence in the glass, which very slightly rotates the polarization of the light, allowing light leakage.
Click to expand...

LOL, iPad 2...we made it thin, thinner than any other device on the market, the display now features a "mura" border around the outside of the screen but don't worry about that cause it's really thin.
 
RadicalxEdward said:
forgive me if someone did and I missed it, but lots of people are saying it's a big deal, and lots are saying it isn't.

I think it'll be pretty rare that I look at an ipad with a black screen at 100% brightness in the dark. so can someone take some pictures with a movie playing or something (a dark scene, black bars, etc) to show how bad/good it looks in dark scenes in real world conditions?

Thanks!
Click to expand...
Someone did that earlier in the thread, I believe:



 
johndallas999 said:
Ah, since it's been explained everyone now should just accept it and not complain. Oh yeah and never watch movies or use the ipad with the lights off. Sounds simple enought for a 500+ piece of equipment from Apple.
Click to expand...

Wtf? I never said people should accept it, I was just stating that most people have no clue what the source of the problem is and think it is something Apple can fix. The fact is as long as Apple uses edge-lit LCDs then this will be an issue. My stance has always been, from the very first reply I made, that a small amount of backlight bleeding is unavoidable. If someone has a severe amount or is not happy, then go get it exchanged or get a refund. This has been the case with the first iPad as well, which also had backlight issues.

So just relax, I don't like backlight bleed either, but people need to understand the facts of display technology and find an iPad with minimal bleeding. People who say they have 0 bleeding at all have not supplied pictures, and I suspect it is like mine and many others where the bleeding is extremely hard to detect, though it is still present when taking steps to amplify it.
 
RadicalxEdward said:
sorry i missed it, thank you for kindly reposting. I was hoping it wouldn't be noticeable but it definitely is. Guess I'll just have to cross my fingers that mine arrives ok.
Click to expand...

Take those pictures with a grain of salt. The camera was set to a long exposure and is not at all how the human eye sees the screen. If it was then the movie would be completely unwatchable anyway because everyone's faces are completely washed out.

Long exposures amplify the effect of the backlight on all displays. It is a great way to find flaws, but it is not the proper way to determine how severe the bleeding is under normal conditions.
 
ovrlrd said:
Take those pictures with a grain of salt. The camera was set to a long exposure and is not at all how the human eye sees the screen. If it was then the movie would be completely unwatchable anyway because everyone's faces are completely washed out.

Long exposures amplify the effect of the backlight on all displays. It is a great way to find flaws, but it is not the proper way to determine how severe the bleeding is under normal conditions.
Click to expand...

ya but our eyes have a higher tonal range than cameras do. It's tough taking pictures of that kinda thing no matter what. I remember I built a 1Watt blue laser and it was pretty darn bright (lit up a dark room significantly) but if you didn't do a long exposure you almost couldn't even tell it was there. so the fact that it's a long exposure doesn't mean it's not realistic.

but there's really nothing I can do but wait and see how mine turns out. I agree with you that some bleed is unavoidable, but if mines anything like those pictures i'd be returning it. that would bug me REAL fast.
 
Robphoton1 said:
I would say it is not a real problem unless you have a device that shows it bad enough to be visible with room lights on and the display is how you would use it. For my iPad I have to really go out of my way to see it.
Click to expand...

That will be my approach as well when I get mine (should arrive on Thursday).

If I don't notice any bleeding on normal usage and lighting conditions (including watching movies in the dark), I won't worry about it. If I do, then I'll exchange it in a month or so when demand has leveled out and hopefully Apple has addressed the issue.

I'm not going to put up a solid black screen and check in the dark as that's a circumstance I'll never encounter in normal usage. A movie in the dark in bed would be the most relevant test for me.
 
RadicalxEdward said:
ya but our eyes have a higher tonal range than cameras do. It's tough taking pictures of that kinda thing no matter what. I remember I built a 1Watt blue laser and it was pretty darn bright (lit up a dark room significantly) but if you didn't do a long exposure you almost couldn't even tell it was there. so the fact that it's a long exposure doesn't mean it's not realistic.

but there's really nothing I can do but wait and see how mine turns out. I agree with you that some bleed is unavoidable, but if mines anything like those pictures i'd be returning it. that would bug me REAL fast.
Click to expand...

Agreed about exposure, just saying that for LCD displays in general, you want to dial in the exposure as close to what you are actually seeing as possible. I can tell from that photo that it is not as bad as it looks, but I am not going to say it doesn't still look bad in real life. That is up to the user to decide.
 
johnc22 said:
And that's why I'll hang on to the one I've got. If I'd never seen this thread I'd never have even noticed the bleeding. I think for people who have obvious bleeding thats visible in a well lit room, exchanging is a must.
Click to expand...

Yup! I see when I'm outside in the shade. You don't need dimly lit room or black room to see it, its definitely annoying a hell.
 
ovrlrd said:
Take those pictures with a grain of salt. The camera was set to a long exposure and is not at all how the human eye sees the screen. If it was then the movie would be completely unwatchable anyway because everyone's faces are completely washed out.

Long exposures amplify the effect of the backlight on all displays. It is a great way to find flaws, but it is not the proper way to determine how severe the bleeding is under normal conditions.
Click to expand...

Don't take it with a grain of salt.

It depends on the photographer and the camera. Long exposures are meant to obviously amplify light in a scene. Depending on how long the exposure is, and the aperture, it can easily mimic what the human eye sees, or embellish it way beyond that. Photog 101, really.

Considering more than one person, with their OWN eyes has seen this on their device, it's safe to say this is a real issue and not just some photographic aberration. I have one, and I see it on mine, but luckily only in one area the bottom.

If you don't have one, you probably won't know enough to comment with confidence so we'll take your response with a grain of salt.
 
So I have the bleeding issue along the bottom of the screen when holding it landscape with the home button the the right. As I'm nearby to my local apple store I decide to take it in. Sure enough out on the sales floor you can barely see the issue ever with the brightness turned all the way up. I explained that I didnt discover the issue until I watched a movie fullscreen at night in a dark room. The specialist took it and went into their back room and was back out in a minute or two. he acknowledged the issue, and said it was the glue not being dry in those spots. They didn't have any replacements, but asked me to call him tomorrow night as they are expecting them monday. They are holding off selling any new units until Tuesday morning, and the specialist said he would hold one for me.

I can honestly say it does seem like the bright spots have dimmed a little over the past 36 hours or so, maybe it is the glue issue?
Either way I'll be using my iPad all day; I'll put a movie on to play while I'm not using it too( to rule out the glue claim)

All in all this unit is fantastic for everything else it does, and I'm glad that I'll get a flawless screen eventually.
 
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viva la ben said:
So I have the bleeding issue along the bottom of the screen when holding it landscape with the home button the the right. As I'm nearby to my local apple store I decide to take it in. Sure enough out on the sales floor you can barely see the issue ever with the brightness turned all the way up. I explained that I didnt discover the issue until I watched a movie fullscreen at night in a dark room. The specialist took it and went into their back room and was back out in a minute or two. he acknowledged the issue, and said it was the glue not being dry in those spots. They didn't have any replacements, but asked me to call him tomorrow night as they are expecting them monday. They are holding off selling any new units until Tuesday morning, and the specialist said he would hold one for me.

I can honestly say it does seem like the bright spots have dimmed a little over the past 36 hours or so, maybe it is the glue issue?
Either way I'll be using my iPad all day; I'll put a movie on to play while I'm not using it too( to rule out the glue claim)

All in all this unit is fantastic for everything else it does, and I'm glad that I'll get a flawless screen eventually.
Click to expand...

this is what i'm hoping the most. that minor issues are inherent to these screens and major issues are just something like not fully cured glue that will get better on their own.
 
Mura

I do not think you should replace your unit unless it is quite visible in the room with lights on. In that case you have a lot of stress in your device for some reason. The reason I say this is you can see mura on ALL devices, Apple or Android. All you need to do is flex it slightly. You can even make it go away by flexing it the right way. At least with Apply you have a unibody metal case rather than a flimsy plastic one. You do need to handle with care, though. You don't want to wrap it around something in your suitcase by crushing down on it. That will surely put a permanent bend in it and associated mura.
 
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