Quote:
Originally Posted by m-reader
Err... No it's not. 
The 80's B&W LCD screens are monochrome - something you can find in the old RCA REB-1100 e-readers.
This is a non-backlit LCD screen similar to Pixel Qi technology. |
Quote:
Originally Posted by m-reader
Thanks for the clarification - I'm a bit thin on the technical details behind it all.
What I meant to say by comparing it to Pixel Qi is that it's B&W and it's not backlit.
I thought jetBook was just a plain ol' LCD? So much to learn, so little time ...  |
You have two kinds of LCD. One is reflective. Which means there is some kind of mirrory surface that reflects light back. The same as with paper (or e-ink). It doesn't have a backlight, because that wouldn't come through that mirror surface. Sometimes, such devices can have a "front-light" (the same as with the Sony 600), but this light is above the LCD layer, not behind. These screens are (almost?) always black and white.
The other is transparent. In this case, there is no mirrory surface and light from outside will pass right through the LCD layer. So, no reflection means visibility (as you can only see due to the reflection of light). These devices need to have a backlight to make things visible. In well-lit areas, this can be a problem, as the ambient lighting can be much brighter than the backlit, so you will have less visibility.
A third option is transflective, which comes from transparent and reflective. The mirrory surface in this case is not completely a mirror, it will let light through both ways. So, you can add backlight and you can turn off the backlight and still have a good contrast in well-lit rooms. This type of screens is already being used for some time in the high-end PDA's.
What PixelQi is doing is optimizing the transflective technology.
Quote:
Originally Posted by kjk
Is page turn speed even an issue on a TFT-LCD?
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Yes, but that has more to do with processor power rather than screen refresh...