Quote:
Originally Posted by rdavis184
I think that as long as color e-ink displays can maintain the same resolution, presence and "crispness" that the monochrome screens do, it's a winner.
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Now that will be the challenge. With B+W display, we're currently seeing them running at 160 DPI/PPI to 200 DPI/PPI. DPI = PPI on a these screens because each pixel is a single dot.
With colour display, you need three dots (red, green, blue or cyan, magenta, yellow) to make up a single colour pixel. So given the current dot-pitch, the same pitch on colour screen would, at best, be 200 DPI = 66 PPI. That's super low and not crisp at all. A normal computer screen is about 100 PPI (300 DPI).
So to keep it crisp. they will need to significantly increase dot density. To achieve 160 PPI, they'd need to be able to make these screens 480 DPI. Wow! That would make a super-sharp B+W screen! And a 480 PPI B+W should cost less to make than the 160 PPI colour because it doesn't have any of the colour complexity - every dot is the same.
I'm sure the market will bring us colour because some people think it's good, and one day, they will have increased the density sufficiently to make 200 PPI (600 DPI) screen -- which is really what I think we need to make them adequately sharp. But there will always be a market for B+W, which will be cheaper and sharper because they will always have fewer dots to achieve the same level of detail.