display screen to get for outdoor use

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What kind of display screen can be viewed outdoors?
I can't see the screen of my ComPaq Presario 1200 when I'm outdoors. I'm
thinking of getting a newer laptop and want a display that can be easily
viewed when outdoors.

Re: display screen to get for outdoor use

William Andersen wrote:
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All my laptops look great outdoors.  The problem is the bright light
that sometimes happens there.
Most laptop displays are transmissive and backlit.  The intensity of the
display has to be greater than all the reflections from the surface.
The sun is a gazillion times more intense than the laptop, so ANY %
reflection from the surface is too much.  The antireflective coating has
to be on the surface, so it attracts fingerprints like a camera lens.
And it reduces the brightness and may cause moire patterns depending on
the technology used.
So the display looks worse inside and nobody, except maybe you and me,
would buy one.
You're not likely to find what you want until you get into the high-end
industrial or military market.  And you wouldn't want to pay what it costs.

There are some nice looking transreflective PDA displays that look
excellent in bright sunlight.  The old Palm m505 is very readable
outside.  It's color, but the color range would be unacceptable for a
general purpose desktop application.  Haven't seen any laptop-sized
transreflective displays yet.  Again, the market won't support high
volumes, so they probably won't ever be available at competitive prices
until they can match TFT quality inside.

If you only need a minor improvement, there are some contrast
enhancement things you can do with polarizers and filters...but you
still need that pesky AR coating.

But do report if you find something.
Might want to ask in the gps or satellite navigation groups.

Return address is VALID but some sites block emails
with links.  Delete this sig when replying.
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Re: display screen to get for outdoor use

Hi all, I am a blind person. Where can I find a lap top that the screen
has gone out? I figured someone had 1 that they might want to get rid of.
I can use my screen read program on it, and don't need any monitor. Wonder
what happens to lap tops that the screen is messed up on? I do have a lap
top I bought new, and don't like the keyboard layout on. E-mail back if
you can answer this question. Don't check the news groups that much.

D&Y Computers, Griffin, Georgia
PHONE: 1-770-229-4240

Re: display screen to get for outdoor use

William Andersen wrote:

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They're expensive, but take a look at <http://www.elecrovaya.com --you can
order some of their models with an extra-cost screen that they claim is
outdoor viewable.

to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)

Re: display screen to get for outdoor use

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You need a machine with reflective display (which looks good outdoors but tend
look dim indoors) or a transflective (transreflective) screen which looks good
outdoors and indoors.  The backlight in regular displays  (transmissive screens)
far to weak to overcome the sun.  One exception are bright, hi-res screens, such
IBM FlexView which is perfectly usable outdoors (I'm typing this in a very
sunlit room, on a ThinkPad with such a screen) but even those look wash out.

Sharp makes fantastic displays for outdoor use, unfortunately smallish, mostly
PDAs (Zaurus.)  NEC Versa laptops have transreflective screen.  There are
including "ruggedized" outdoor laptops from Panasonic.

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