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Article #11777Re: How do LCD TV screens work?
From: Bob Myers
Date: Mon, 05 Oct 1992 16:38
Date: Mon, 05 Oct 1992 16:38
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> Just curious -- what devices are used to scan LCD TV screens and light
> the individual pixels?
>
> Kent
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).
Bob Myers KC0EW Hewlett-Packard Co. |Opinions expressed here are not
User Interface Tech. Div.|those of my employer or any other
myers@fc.hp.com Fort Collins, Colorado |sentient life-form on this planet.
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From: myers@hpfcso.FC.HP.COM (Bob Myers) Date: Mon, 5 Oct 1992 16:38:14 GMT Subject: Re: How do LCD TV screens work? Message-ID: <7480121@hpfcso.FC.HP.COM> Organization: Hewlett-Packard, Fort Collins, CO, USA Path: arc1-ca.pugleaf.net!sparky!uunet!charon.amdahl.com!pacbell.com!ames!elroy.jpl.nasa.gov!sdd.hp.com!scd.hp.com!hplextra!hpfcso!myers Newsgroups: sci.electronics References: <1992Sep30.213652.26677@serval.net.wsu.edu> Lines: 17