Quote:
Originally Posted by stumped
please explain more.
so the led light hits some sort of deflector / mirror
how would that cause blotchiness ?
i was thinking the inconsistencies were more likely due to sourcing cheap LEDs so not all emit the same brightness,
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The light guide layer covers the entire screen so the light from the LEDs at the edge is spread evenly (in theory) across the whole screen. You are looking through that layer at the eInk screen itself. Basically, one side of the light guide is designed for total internal reflection while the other side has a pattern of holes to allow the light to escape so it strikes the screen and reflects back to your eye. Check diffuse or Lambertian reflection for more information on how this works. As I said, a dancing bear.