Quote:
Originally Posted by LDBoblo
In the case of OLPC at least (I can't remember if current Pixel Qi is the same), the reflective layer is between the LCD and the color filters. The color filters are between the reflective layer and the backlight.
So basically, the backlight goes through the color filters, through the semi-permeable reflective layer, through the LCD (which is monochrome of course). Outside light bounces off the reflective layer and never reaches the color filters. Color filters reduce light transmission significantly, so it makes sense to put the reflective surface in front of them.
There are lots of other things going on in a display, and lots of other layers, but hopefully that helps address your question of monochrome versus color. To restate, the reflected light doesn't reach the color filters, which are behind the reflective layer.
It's late though, and if I'm mistaken, someone please correct me.  |
That's pretty much the way that Mary Lou Jepson explained it - and she invented it.
She was a bit more simplistic and said they put a mirror behind the LCD, then put little holes in the mirror so the back-light could shine through.