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Re: About LEDs and LCDs

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On 11/10/17 02:08, Jan Panteltje wrote:
> On a sunny day (Tue, 10 Oct 2017 08:06:38 -0400) it happened bitrex
> <bitrex@de.lete.earthlink.net> wrote in <tJ2DB.15074$Ov1.863@fx30.iad>:
> 
>> This type of module (with one, two, or four lines) plus EL backlight
>> underneath seems to have been the illuminated display of choice in a lot
>> of pro audio equipment, synthesizers, etc. in the 1980s and early 1990s.
>> On the plus side EL material degrades gradually; I'd estimate it has a
>> "time to half brightness" of around 15 years run a couple hours a day.
>>
>> On the downside EL material isn't that bright to begin with, and it
>> seems usually the switching transistor or electrolytic caps in the
>> blocking oscillator used to generate the HV go kaput before the
>> backlight does.
> 
> There is actually an other argument against LCD panels,
> and that is polarization.
> Try looking at one through a pair of Polaroid glasses, and then tilt you head.

I recall stepping into the lift lobby of a high-rise,
and wondering why they had no directory to tell me what
floor to go to. Then I took off my sunnies, and realized
that the black rectangles on the wall weren't architectural
features, but large TV screens mounted vertically, so my
sunnies completely blocked the light from the screen.
Strange experience.It made me think that screens should be
made in various polarisations to suit the application.

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Thread

About LEDs and LCDs Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-09 17:58 +0000
  Re: About LEDs and LCDs John Larkin <jjlarkin@highland_snip_technology.com> - 2017-10-09 11:20 -0700
    Re: About LEDs and LCDs Klaus Kragelund <klauskvik@hotmail.com> - 2017-10-09 11:42 -0700
      Re: About LEDs and LCDs Jan Panteltje <pNaonStpealmtje@yahoo.com> - 2017-10-09 19:24 +0000
        Re: About LEDs and LCDs klaus.kragelund@gmail.com - 2017-10-09 13:13 -0700
    Re: About LEDs and LCDs Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-09 19:08 +0000
  Re: About LEDs and LCDs bitrex <bitrex@de.lete.earthlink.net> - 2017-10-09 16:28 -0400
    Re: About LEDs and LCDs Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-10 08:16 +0000
    Re: About LEDs and LCDs Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-10 08:16 +0000
      Re: About LEDs and LCDs bitrex <bitrex@de.lete.earthlink.net> - 2017-10-10 08:06 -0400
        Re: About LEDs and LCDs Jan Panteltje <pNaonStpealmtje@yahoo.com> - 2017-10-10 15:08 +0000
          Re: About LEDs and LCDs Jan Panteltje <pNaonStpealmtje@yahoo.com> - 2017-10-10 15:13 +0000
            Re: About LEDs and LCDs Allan Herriman <allanherriman@hotmail.com> - 2017-10-10 23:21 +0000
          Re: About LEDs and LCDs Clifford Heath <no.spam@please.net> - 2017-10-11 10:58 +1100
            Re: About LEDs and LCDs Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-10-10 17:10 -0700
            Re: About LEDs and LCDs Jan Panteltje <pNaonStpealmtje@yahoo.com> - 2017-10-11 14:40 +0000
              Re: About LEDs and LCDs jack4747@gmail.com - 2017-10-11 07:45 -0700
                Re: About LEDs and LCDs Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-11 15:02 +0000
              Re: About LEDs and LCDs krw@notreal.com - 2017-10-11 21:03 -0400
                Re: About LEDs and LCDs Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-12 07:19 +0000
                Re: About LEDs and LCDs rickman <gnuarm@gmail.com> - 2017-10-12 13:07 -0400
                Re: About LEDs and LCDs Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-12 17:18 +0000
                Re: About LEDs and LCDs kevin93 <kevin@whitedigs.com> - 2017-10-12 19:30 -0700
                Re: About LEDs and LCDs krw@notreal.com - 2017-10-12 21:28 -0400
                Re: About LEDs and LCDs krw@notreal.com - 2017-10-12 20:55 -0400
              Re: About LEDs and LCDs Jasen Betts <jasen@xnet.co.nz> - 2017-10-12 04:22 +0000
          Re: About LEDs and LCDs Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-10-10 17:12 -0700
            Re: About LEDs and LCDs Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-11 14:41 +0000
  Re: About LEDs and LCDs Martin Brown <'''newspam'''@nezumi.demon.co.uk> - 2017-10-10 14:56 +0100
    Re: About LEDs and LCDs Jan Panteltje <pNaonStpealmtje@yahoo.com> - 2017-10-10 14:20 +0000

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