5 ms·
Instead of reflecting ambient light, why not measure it and then emit the same amount? It should be indistinguishable (as long as you reconstruct the RGB colors
by WithinReason 2y ago
Instead of reflecting ambient light, why not measure it and then emit the same amount? It should be indistinguishable (as long as you reconstruct the RGB colors properly), so you can use a regular OLED display.
- prollings 2y agoI dunno, I can barely see my OLED phone's screen when I'm using it on full brightness in the sun.
- tetris11 2y agoI like the idea for indoor devices, but the illusion will be immediately broken as soon as you pick up and move around the device unless the ambient light sensor is polling at a high rate
- consp 2y agoBattery life is still affected with emissive displays.
- tliltocatl 2y agoIt's not about chroma, its' about luma. You would need pretty powerful backlight to match ambient on a sunny day. It will burn battery pretty quickly and require unrealistic cooling.
- kwhitefoot 2y agoBecause a sunny day at the equator is about a kilowatt per square metre. A typical mobile phone display is about 100 cm^2 (0.01 m^2), so you would need to emit 10 watts to match sunlight. As far as I can tell OLEDs are 20% efficient or less so you would need an input power of 50 W. Even at 60 deg. N where I live we get over 300 W/m^2 in August so would still need about 15 W of input power to the display.
- WithinReason 2y agoJust aim the light at the user's face and those power requirements reduce by 99% :)
- kwhitefoot 2y agoHow so? Diffuse and reflected sunlight is still orders of magnitude brighter than you can feasibly generate in a mobile phone. Perhaps the solution is eye tracking and steerable lasers lighting up the retina directly. That should cut the power requirements by a factor of a few thousand!
- mensetmanusman 2y agoOutdoors, the phone would melt your hand with the best light emitting tech that exists today.