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What is LCD sparkle?! - Page 2

post #21 of 44
3/17/05 at 5:23pm
Hm i saw a similar problem with a notebook a couple of years ago, and it was due to some loose connection. After resetting everyting in place, it went away.

Unless this is completely different than what i saw, but it sounds and looks similar.
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post #22 of 44
3/17/05 at 5:42pm
I would doubt there is a lose connection on this many laptops. If so, Dell really has some QA issues.
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post #23 of 44
3/17/05 at 5:46pm
Quote:
Originally Posted by Maklar
I would doubt there is a lose connection on this many laptops. If so, Dell really has some QA issues.
What would the difference in QC if it was a loose connection or the LCD itself?

It would be worth a shot if you do have this problem.
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post #24 of 44
3/17/05 at 5:51pm
QC doesn't handle the LCD. That would be design issues.

QC just ensures that the laptop is built correctly.
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post #25 of 44
3/17/05 at 6:22pm
maybe you guys are just too paranoid. pssst did a black van deliver you the laptop?
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post #26 of 44
3/17/05 at 6:22pm
Quote:
Originally Posted by Maklar
QC doesn't handle the LCD. That would be design issues.

QC just ensures that the laptop is built correctly.
All systems that are built, are run through a test, even if it's very rudimentary. If this was a problem, it should have been recognized at that testing phase. The test was probably all DOS base, so it was probably just overlooked at the time. Regardless, it would be worth a shot... like i said, i saw a laptop with similar effects before... i didn't know it was 'sparkles', we called it shimmering.
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post #27 of 44
3/17/05 at 6:29pm
Thread Starter 
I can imagine the shimmering effect you're talking about. I assume images would shimmer even if you held your head perfectly still, right? That does sound like a hardware problem, but the "sparkle" problem is caused by refracting the light through the coating on the display. You can sort of see it "hover" above the physical pixel layer a bit, and it shifts as your viewing angle shifts.
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post #28 of 44
3/21/05 at 6:09pm
Sparkle effect is no where near that bad. So I hope that helps. Colors are more vibrant and the sparkle is minimal at best. I think it is much ado about nothing, but I am not that much of an expert. Plus it is people;s money and they should get what htey perceive to be their money's worth. My opinion is it is awesome. Overall this is just a seriously awesome laptop...
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post #29 of 44
3/23/05 at 5:12pm
Well, this is my first time viewing the so-called "sparkles, viewed on on a 17" flatscreen CRT and was staggered, GOD, THAT'S DREADFUL!!!

No wonder Dell had major returnage.

Even if I hadn't ever been warned of that issue, that effect would have stuck out a mile off, even with me never having had a laptop before.

Hope the 9300's aren't as bad, I was just about to order the 9300 (but they've ran out of 512 sticks of ram... 2 x 512MB DDR2 is better than 1 x 1GB DDR2 for performance, yeah?)....
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post #30 of 44
3/23/05 at 8:15pm
Quote:
Originally Posted by dellbert
I can imagine the shimmering effect you're talking about. I assume images would shimmer even if you held your head perfectly still, right? That does sound like a hardware problem, but the "sparkle" problem is caused by refracting the light through the coating on the display. You can sort of see it "hover" above the physical pixel layer a bit, and it shifts as your viewing angle shifts.
Dellbert, I remember the original antiglare coating being described as a series of little bubbles. No doubt these would act as lenses, focusing the central portion of the lens to a point where the viewer was looking at the screen. If this overlay full of little lenses was overlaid on the LCD and was displaced in some way so rather than lying on top of the centre of the pixels each 'lens' was lying on top of a pixel boundary, the screen would appear very grainly and one would be able to see the regions between pixels more clearly than the pixels themselves. If it were an overlay alignment issue, it's then possible that some were overlaid correctly and there are certainly some 9200 owners with the LG/Philips panel that do not complain of this sparkle effect.
It's possible that these people are genuinely not as fussy and the screens exhibit the same effect, or maybe the screen coating alignment causes this effect.

Just throwing another POV into the fray...
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post #31 of 44
3/23/05 at 8:25pm
Thread Starter 
Quote:
Originally Posted by pstojanov
Dellbert, I remember the original antiglare coating being described as a series of little bubbles. No doubt these would act as lenses, focusing the central portion of the lens to a point where the viewer was looking at the screen.
Interesting that you should bring that up. I was googling around the other day looking for research papers on LCD coatings, trying to figure out what was going on with these particular LCDs. I found an abstract about this very topic. Researchers at a certain LCD maker found that by adding microlenses to the LCD coating using nano-structures, they could improve the perceived brightness of the display by 1.5X!

Oh, the research was done in Holland. You guessed it: LG-Philips.
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post #32 of 44
3/30/05 at 10:01pm
didn't have any problem
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post #33 of 44
4/6/05 at 6:43am
Dell doesn't consider it a problem either.They consider it a trade off on keeping the prices competitive...
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post #34 of 44
4/6/05 at 8:28am
Quote:
Originally Posted by dellbert
Interesting that you should bring that up. I was googling around the other day looking for research papers on LCD coatings, trying to figure out what was going on with these particular LCDs. I found an abstract about this very topic. Researchers at a certain LCD maker found that by adding microlenses to the LCD coating using nano-structures, they could improve the perceived brightness of the display by 1.5X!

Oh, the research was done in Holland. You guessed it: LG-Philips.
Interesting, they are using them in the coating itself now. I thought they only used microlenses for the backlight assembly.

Can you point me in the direction of this paper?
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post #35 of 44
5/4/05 at 6:41am
i need help. which one should i purchase ? dell 9300 or 6000?

i am planinng for uni and gaming. for gaming almost 5 hours day, for uni about 2 hours per day. most likely i take it to my friend's home playing warcraft ft.

weight it doesnt matter. uni means university.
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post #36 of 44
5/4/05 at 8:48am
delbert,

A photo that shows a lot more "Sparkle"

http://theendlessnow.com/m70-screen/
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post #37 of 44
5/4/05 at 8:57am
dellbert,

A photo that shows a lot more "Sparkle"

http://theendlessnow.com/m70-screen/
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post #38 of 44
5/4/05 at 3:16pm
It's not nearly as bad as people make it out to be btw.
Chris (theendlessnow)
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post #39 of 44
5/4/05 at 3:31pm
Thread Starter 
I agree -- it's not that bad on the glossy 9300. Of course, glossy displays should be 100%-free of "sparkle" since it's an artifact of the anti-glare coating, and glossy displays aren't supposed to have an anti-glare coating. Leave it to Dell to put a glossy coat on top of an old LCD with anti-glare coating. Incredibly stupid, IMHO. They could have had a near-perfect LCD, which would have made the 9300/XPS2 the perfect laptops.
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post #40 of 44
1/27/06 at 1:30am
does anyone have any "working" links for sparkles pics? would appreciate it...
i just got my 9300, and i THINK i have a bit of sparkling, but i dont know!
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