Do all LCDs have backlight bleeding?

J

james111

Limp Gawd
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Oct 11, 2005
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Is backlight bleeding a common thing for lcds?

It's just that all the lcds i've owned (2x2005fpw, 2405fpw, and 3x2007wfp) all have suffered from backlight bleeding usually from the corners.

I just got my third 2007wfp today and it's just as bad as my original 2007wfp.
Should I continue with the replacements until I get one with minimal backlight bleed or should I just try a different brand? i.e viewsonic, LG
 
james111 said:
Is backlight bleeding a common thing for lcds?

It's just that all the lcds i've owned (2x2005fpw, 2405fpw, and 3x2007wfp) all have suffered from backlight bleeding usually from the corners.

I just got my third 2007wfp today and it's just as bad as my original 2007wfp.
Should I continue with the replacements until I get one with minimal backlight bleed or should I just try a different brand? i.e viewsonic, LG
Click to expand...

Dell does not manufacture the best LCD's by any means. Take a look at Viewsonic, NEC, Samsung, LG.
 
While that may be true (i've also seens horrific HP's), via science you are not going to get a perfectly uniform backlight from the limited sources a lcd uses. ie. often 1 source. That's why they put stuff like OLED on the R&D board. So yes exchange a bad one, maybe try a different brand, but examine by microscope guy is not ready for lcd. Or more like lcd is not ready for him. 'tis fact.
 
Any LCD will have a poorer black level than a CRT, but that is not really the same as backlight bleeding if you are getting it non-uniform across the screen.

I have a Dell 2001fp and the backlight is completely uniform. I have never tested it against a pure black screen to be sure, but since I never stare at a pure black screen on my computer, that test wouldn't really matter. In all of my usage of it over the past 3 or 4 years, I have never noticed non-uniform backlighting.
 
I've only owned two LCD's (Samsung and Viewsonic) and both have had some backlight bleeding. The Viewsonic only bleeds in the top left corner slightly but it still pisses me off. I have a friend with a Dell LCD and the bleeding is horrible on that one, all four edges bleed. I don't see any bleeding on his BenQ LCD though. LCD technology better overcome this kind of crap soon or else I am going back to CRT.
 
NulloModo said:
Any LCD will have a poorer black level than a CRT, but that is not really the same as backlight bleeding if you are getting it non-uniform across the screen.

I have a Dell 2001fp and the backlight is completely uniform. I have never tested it against a pure black screen to be sure, but since I never stare at a pure black screen on my computer, that test wouldn't really matter. In all of my usage of it over the past 3 or 4 years, I have never noticed non-uniform backlighting.
Click to expand...

Well, some of that there is my point too. While there may be no true uniform background, there is pretty close. Some are damn good and you won't notice. Some companies have better QC, while others are worth trying a few. But if you are going to judge your monitor by staring at black screens you may be just annoying yourself. I didn't like my 2405FPW because I ntoiced blurring, but when I'm fucking with my lighting and position on a black screen I knew the H bug had ridden up my ass. :)
 
texuspete00 said:
Well, some of that there is my point too. While there may be no true uniform background, there is pretty close. Some are damn good and you won't notice. Some companies have better QC, while others are worth trying a few. But if you are going to judge your monitor by staring at black screens you may be just annoying yourself. I didn't like my 2405FPW because I ntoiced blurring, but when I'm fucking with my lighting and position on a black screen I knew the H bug had ridden up my ass. :)
Click to expand...

Exactly, I tend to pick from real world performance first, and then synthetic style benchmarks to fine tune within a certain price range. I won't pay twice as much for a screen than has completely uniform backlighting that is not noticeable in real world use, but if one does have it and one doesn't and the difference is only $10, I might as well spend the little bit of extra cash.
 
ValeX said:
My LG L204WT has zero backlight bleeding
Click to expand...


I dont know how many of these are directed at me or not. My point is it is inherent to the technology. Lighting a panel with one source is not going to be perfect. I just want to make a point of looking at one self to realize if you are being anal or not. I mean, that's what a spatial uniformity test is about. Maybe I'm the one overdoing words. But an LG nor any other lcd has a uniform backlight. Yours probably is really good. Maybe even can't tell with the naked eye good on a black screen. But other people on their knees taking photos of their screen should maybe reevaluate. Is it bad.. or I can tell with some makeshift H' anal retentive test. That's the OP's answer. I do think Dell gets a bad rep based partly on volume. Hardly isolated to them. It's one bulb lighting a whole panel! No pocket protector science involved in it.

edit: Yeah that's what i'm getting at NulloMuldo. thanks.
 
ValeX said:
My LG L204WT has zero backlight bleeding
Click to expand...

The question isn't if it does or not in the most harsh test, but will you ever notice it. There are plenty of LCDs out there that it shouldn't be noticeable in, if you can see it in yours, RMA it and get one that works. If you can't see it unless you are trying to really hard in the worst conditions, then why worry?

IMO it's as bad as the people who worry about the 140 fps they get in games on one graphics card or the 160 they get in another. You will never be able to see the difference. Personally 30 fps for minimum framerate is enough for me, but with the best cards out there you see a $100 difference from 60 fps minimal to like 70 - 90 fps minmal, no one will be able to tell the difference if 60 fps min is what you get, so why spend the extra cash? If you are that hardcore in the first place you will be upgrading before games reach needing the extra power anyway.

Just spend your money wisely is what I say. I admit the $750 I payed for my 2001fp was a lot (though it was pretty cheap for a screen that size at the time), but CRTs were killing my eyes, so I considered it a worthwhile investment.
 
This isn't about uniform lighting, it's about light leaking out from the edge of the screen. I saw one guy post here some time back that fixed his light bleeding by taking his LCD apart and creating a better seal with some kind of tape.
 
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