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- From: hyatt@cis.uab.edu (Robert Hyatt)
- Newsgroups: comp.sys.laptops
- Subject: Re: Do laptops need screensavers?
- Message-ID: <1992Nov18.162432.1341@cis.uab.edu>
- Date: 18 Nov 92 16:24:32 GMT
- Article-I.D.: cis.1992Nov18.162432.1341
- References: <BxM9EK.17y@csfb1.fir.fbc.com> <1992Nov12.221547.314@cis.uab.edu> <cording.722088324@sorokin>
- Organization: University of Alabama at Birmingham
- Lines: 33
-
- In article <cording.722088324@sorokin> cording@sorokin.anu.edu.au (Dean Cording) writes:
- >hyatt@cis.uab.edu (Robert Hyatt) writes:
- >
- >>In article <BxM9EK.17y@csfb1.fir.fbc.com> uunet!csfb1!jbrock writes:
- >>>As I understand it, the purpose of a screensaver (aside from looking
- >>>pretty) is to prevent a static image from being "burned in" to your
- >>>screen. The flat laptop screen in its many varieties is a very
- >>>different animal from the full sized PC monitor. Does it share the
- >>>"burning in" problem?
- >
- >
- >>No it doesn't, don't worry about the LCD "burning in".... on a CRT, the
- >>phosphor can slowly burn and "store" an image if it is left on long enough.
- >>Not so for our laptop/notebook/etc. machines
- >
- >However, phosphor do suffer from burning in. We have a Toshiba 3200 with
- >a phosphor screen that is used for the Lanalyzer on our network. It
- >has the display pretty heavily etched into the screen.
- >>--
-
-
- What kind of a toshiba has a phosphor screen? I have only seen (a) LCD,
- (b) active/passive matrix color LCD and (c) plasma. I can't see how any
- of these can "burn in" an image since none of them use an electron beam
- to excite a phosphor spot to the point of luminescence. The orange
- displays aren't phosphor based to my knowledge -- I had always assumed
- that they work on a similar principle to other plasma-based light
- sources..... is there any phosphor in there?
-
-
- --
- !Robert Hyatt Computer and Information Sciences !
- !hyatt@cis.uab.edu University of Alabama at Birmingham !
-