Author Topic: Is there a reflective LCD VGA/HDMI/DVi display?  (Read 716 times)

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Offline ELS122Topic starter

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Is there a reflective LCD VGA/HDMI/DVi display?
« on: May 13, 2023, 10:49:01 am »
There is the ""new technology sun vision using brand new reflective technology never seen before in lcds"" overpriced crap that costs 1.5k
But im wondering if there was a display like this made long ago or something, preferably above 800x600, could be monochrome.

Or is there maybe another way to get a monitor that works fine in sunlite.
I am thinking of just getting an old lcd, and replacing the difuser+backlight with a reflective surface, but idk how usable that would be
 

Offline AndyBeez

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Re: Is there a reflective LCD VGA/HDMI/DVi display?
« Reply #1 on: May 13, 2023, 12:19:10 pm »
What is your application/deployment for this display?

There is always the daylight readable 'paperwhite' Kindle type display. Not easy to jailbreak, but these can be used as a static status display. And very low power too :)

 

Offline jpanhalt

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Re: Is there a reflective LCD VGA/HDMI/DVi display?
« Reply #2 on: May 13, 2023, 12:55:26 pm »
There may be purely reflective LCD's, but why?  All of the displays I use are "transflective," which means they can be read without a backlight in decent lighting (e.g., ordinary dim household lighting), and in the dark, they can utilize a backlight ( https://en.wikipedia.org/wiki/Transflective_liquid-crystal_display).  In fact, I include in code dimming or on/off for the backlight to save battery-only operating time.  A simple mosfet or BJT can do the switching.  I use an N-channel mosfet.

Attached is a snippet of the circuit I have used. 
 

Offline ELS122Topic starter

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Re: Is there a reflective LCD VGA/HDMI/DVi display?
« Reply #3 on: May 13, 2023, 05:54:14 pm »
There may be purely reflective LCD's, but why?  All of the displays I use are "transflective," which means they can be read without a backlight in decent lighting (e.g., ordinary dim household lighting), and in the dark, they can utilize a backlight ( https://en.wikipedia.org/wiki/Transflective_liquid-crystal_display).  In fact, I include in code dimming or on/off for the backlight to save battery-only operating time.  A simple mosfet or BJT can do the switching.  I use an N-channel mosfet.

Attached is a snippet of the circuit I have used.

Yeah transleflective would be fine too, I just need it so it's usable in sunlight.
But I need it to have some kind of input I can use with a PC; VGA, DVI, HDMI or Display Port.
Are modern monitors transleflective? All my monitors are only backlit.. Or they just have terrible performance in sunlight since with the backlite dimmed it doesn't cut it in sunlight at all.

I need it because I want to catch a tan in the sun while doing research at the same time  ;D
« Last Edit: May 13, 2023, 05:56:09 pm by ELS122 »
 


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