Re: Life of LCD Panels

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Article #4904

#4904

From: Henry Spencer
Date: Sat, 30 Jun 1990 23:51

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In article <25522@unix.cis.pitt.edu> nadst2@unix.cis.pitt.edu (Nilanjan Adhikari) writes:
>>Still, the point is valid:  even the slightest DC offset will eventually
>>degrade the LCD.  Basically, it causes electrolytic reactions...
>
>  It appears that the degradation requires a dc field to be present.
>Does that mean that for intermittently used lcd's (like those in a
>camera or a calculator), the degradation is practically of no concern ?

I would worry about long-term degradation in almost any device involving
chemicals in solution.  Effects that normally don't even rate mention can
get significant when you leave the thing to sit for five years.  However,
I believe it's true that LCDs don't degrade *much* when powered down.
-- 
"Either NFS must be scrapped or NFS    | Henry Spencer at U of Toronto Zoology
must be changed."  -John K. Ousterhout |  henry@zoo.toronto.edu   utzoo!henry

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Message-ID: <1990Jun30.235106.4186@zoo.toronto.edu>

Path: arc1-ca.pugleaf.net!utzoo!henry

References: <25269@unix.cis.pitt.edu> <3922@memqa.uucp> <1990Jun29.150402.6752@zoo.toronto.edu> <25522@unix.cis.pitt.edu>

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Newsgroups: sci.electronics
Path: arc1-ca.pugleaf.net!utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Life of LCD Panels
Message-ID: <1990Jun30.235106.4186@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <25269@unix.cis.pitt.edu> <3922@memqa.uucp> <1990Jun29.150402.6752@zoo.toronto.edu> <25522@unix.cis.pitt.edu>
Date: Sat, 30 Jun 90 23:51:06 GMT

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