T42 15" Flexview problem? :(

[RS_003]

Hello,

I owned this laptop (a T42 CTO... 15" 1400x1050 screen) for 3 weeks now.

And I just noticed a very strange problem.


I bumped to this problem because I use a black background.

The problem is. If Open my documents for instance on the desktop.
The part where the opened window is. Is much brighter.

A very strange problem. Its not software related. Because I also have it in the pre desktop arena.

This is an extreme example (It’s only noticeable on a black / grey surface)
But I can't explain it otherwise.

http://www.bluebus.nl/~bluebus/schermstuk.PNG

And if I open multiple Windows and move them over each other the place where the both are gets double as bright?

[Kenn]

Yeah, I've seen this too. This behavior is due to the way LCD hardware works, and has been around since the days of 16-color grayscale LCDs, and probably even before then. I do notice it happening more on the Flexview than on the 14", but it's just one of those "inherent" flaws I've allowed myself to live with.

BTW, thanks for taking the time to mock up an image to illustrate what you're talking about, it would be hard to figure out otherwise.

[kev009]

This is in general how thin LCDs are, though some have it worse than others. On my 14.1" SXGA+ T42 I can only faintly see it if my screen is at full brightness and I look at it at certain angles. A high quality photograph might help other users to see if your Flexview is out of the norm.

[RS_003]

This is in general how thin LCDs are, though some have it worse than others. On my 14.1" SXGA+ T42 I can only faintly see it if my screen is at full brightness and I look at it at certain angles. A high quality photograph might help other users to see if your Flexview is out of the norm.

Ill take one next week

1600x1200 is fine?

And Kenn, thx.

I thought there was something very wrong. Because my 6 other tft's don't have this problem. (2 Xerox XL 77D, 1x Iiyama prolite E431-SB, 1x IBM X40, 1x IBM E390) But if I call to get my screen replaced this won't fix anything? Because this is just the way the flexviews work?

[Kenn]

I tried taking a picture tonight, and discovered three important things:

1) The same vertical contrast-edge effect shows up on my digicam's LCD live preview as well!

2) It's very difficult to capture the effect on camera, though it's fairly obvious when looking at the actual screen, especially if you're moving windows around.

3) Even if you've captured the effect on camera, you can never be sure if you're view it on the same laptop, since you can't tell if you've captured the effect or if the "light on dark" image you captured is actually causing the effect to happen on-screen!

I had to up the levels quite a bit here to get the effect to show up on a black background:
http://www.pbase.com/kenn/image/39752599.jpg

Here you can see some light vertical lines above the Photoshop icon - it's not a solid bar here because I have several subwindows open directly below where the vertical bars are.
http://www.pbase.com/kenn/image/39752600.jpg

(admin edit: please - no images unless mentioned in subject line)

[RS_003]

It’s really hard to capture it on picture

but I think the last 3 pictures speak for them self. A complete black background with a medium white picture in the middle. And you can (well, not on the picture) clearly see the brighter spot.

Something I don’t have on my other tft's.

Click HERE!!!! For pictures

TIA for al the reactions

[Kenn]

Yep, looks like "normal" behavior to me. Hope it's not too distracting to live with!

[RS_003]

Yep, looks like "normal" behavior to me. Hope it's not too distracting to live with!

Well, to really notice it you have to be on the AC (And I am @ it 95% but oke )

I just hope it doesn't get worse, otherwise I would return it. Because I bought this laptop to do some designing, and if it hinders my work. IBM will just have to replace it.

Anyone else with this problem?
(btw, kenn thx for your support But you don't have an 15" Flexview? Only a 14" SXGA, or 1600x1200 Flexview, but thats not the samescreen my 1400x1050 flexview is a lot brighter then a 1600x1200, I know because I had a R50P )

[Kenn]

15" flexview. I had both 1600 and 1440 before, they looked to be the same brightness, but the 1440 should be a bit brighter because the pixels (light-transmitting portion) are larger.

[RS_003]

15" flexview. I had both 1600 and 1440 before, they looked to be the same brightness, but the 1440 should be a bit brighter because the pixels (light-transmitting portion) are larger.

I see,

Now I Hope some one else is willing to make pictures or to respond.
But what I Heard form you so far its seems this is a normal problem (but a nasty one )

[Kenn]

Yeah, based on my experience with LCD units in general, I don't think it's a specific design or manufacturing fault that would be solved with a new machine. But I agree that it can be noticeable and distracting. I hope it's not a problem you cannot live with!

Best,
Kenn