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My first thought was "well of course they don't," but their concept renders do indeed have opaque black. I'm guessing these are just technically uninformed ren
by mortenjorck 6y ago
My first thought was "well of course they don't," but their concept renders do indeed have opaque black.
I'm guessing these are just technically uninformed renders with no basis in actually-proposed applications, but it seems at least plausible that one could combine transparent OLED with a transparent LCD backing (sort of the inversion of a backlight) to create a variable-transparency screen.
- ACAVJW4H 6y agoPardon my ignorance but wouldn't LCD need polarized light to perform the darkening? Maybe a transparent pixelated electrochromic display layer might work
- numpad0 6y agoLCD usually has polarization filters already glued to the back
- heftig 6y agoThe backlight of an LCD isn't itself polarized. A TN LCD display is made of two orthogonal polarization filters with the liquid crystals in between. In their relaxed (twisted) state, the crystals rotate the polarization of the light so that it can pass the second filter. When a voltage is applied, the crystals straighten and the second filter blocks the light.