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The screen is described on the OLPC site: http://wiki.laptop.org/go/Display http://wiki.laptop.org/go/Display As I understand it, it is a standard(?) trans-ref
by gvb 16y ago
The screen is described on the OLPC site: http://wiki.laptop.org/go/Display http://wiki.laptop.org/go/Display
As I understand it, it is a standard(?) trans-reflective (like half silvered mirror - it reflects front lighting, but also can be back-lit) black & white LCD.
In color (backlight) mode, the backlight shines strips of color, so the pixels gate the colored light rather than having a white backlight and color filters on the pixels.
In B/W mode, the backlight is turned off (saving quite a bit of power) and the LCD uses the reflective qualities of the LCD to reflect the front light for the lighting source.
The interesting thing is that front lighting will overwhelm and wash out the color from the backlighting as the front lighting gets stronger.
I have an OLPC, which is the predecessor display, and it works quite well. My opinion of the display is that the compromise was visible but not bad: the color definitely isn't as vibrant as a traditional color LCD or OLED, but the daylight view-ability was very good vs. a traditional backlit LCD that becomes poor or unreadable in bright sunlight.
There are some pictures on the Groklaw article, although I was focusing on size rather than the display when I took the pictures. In retrospect, I should have focused on the display more than the size. :-/
http://www.groklaw.net/article.php?story=20080128171935946 http://www.groklaw.net/article.php?story=20080128171935946