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Article #10798

Re: How do LCD TV screens work?

#10798
From: George L
Date: Wed, 07 Oct 1992 19:49
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In article <7480121@hpfcso.FC.HP.COM> myers@hpfcso.FC.HP.COM (Bob Myers) writes:
>
>In an LCD screen, the pixels are not indivually "lit" - instead, there is
>a uniform backlight (which may just be reflected ambient light, or it may
>be constructed from, say, fluorescent tubes with a diffuser.  The individual
>cells (pixels) of the LCD panel act as shutters or valves for this light; when
>the cell is ON (a voltage exists across the cell), the cell cuts off the
>light (in the most typical mode of operation).
>
I have a recent SONY model, and it uses a miniature fluorescent light. I had 
a problem with my first one though. After the unit had been on and warmed up 
for a while, a couple of the pixels would remain continuously in the 
transmissive mode (this was an active matrix set). I have heard that the 
defect free yield rates on these displays is one of the factors that is 
keeping prices high. Any comments on this?

george@alpha.ee.ufl.edu
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Message-ID: <1992Oct7.194921.19244@eng.ufl.edu>
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References: <1992Sep30.213652.26677@serval.net.wsu.edu> <7480121@hpfcso.FC.HP.COM>

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From: george@beta.ee.ufl.edu (George L)
Subject: Re: How do LCD TV screens work?
Message-ID: <1992Oct7.194921.19244@eng.ufl.edu>
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References: <1992Sep30.213652.26677@serval.net.wsu.edu> <7480121@hpfcso.FC.HP.COM>
Date: Wed, 7 Oct 92 19:49:21 GMT
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