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Old 09-06-2011, 08:43 PM   #1
Psyke
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Edumacational - e-ink technology

http://videosift.com/video/Color-E-I...-Ink-Explained

for those who have ever been curious.
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Old 09-06-2011, 10:58 PM   #2
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Very cool. Looking forward to seeing a Kobo Touch with colour E-Ink and no glass substrate.

The cameraman interviewer on the other hand was an idiot. I felt sorry for the poor guy trying to answer his questions. I mean seriously... MICRO ANTS? The guy should have been given an atomic wedgie, had his camera taken away and somebody who was actually competent do the interview.
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Old 09-06-2011, 11:47 PM   #3
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good video, anyone know the reason for the numbers on the smart credit card?
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Old 09-07-2011, 02:56 AM   #4
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Old 09-07-2011, 03:24 AM   #5
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Thanks, that was very interesting.

He says the colour filter takes up no more power for eINK. I wonder how that works.. As surely there's some kind of switching working there to activvate the various colour filters?
Wouldn't that require an electrical charge?
Is it maybe the charge required to do this is a lot lower that the charge required to change the eINK display itself?
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Old 09-07-2011, 04:28 AM   #6
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You wouldn't need to switch anything to display different colours.
Each pixel is divided to four subpixels which are each behind a different colour filter (R,G,B,W).
For each subpixel you can set 16 different grey levels, which after going through the colour filter are 16 different colour intensity levels.
Since the 4 subpixels are very close together, you see each such quartet as one pixel and the colours mix up to create a compound colour. 16 by the power of 3 (RGB) plus the W for intensity gives you 4096 colours in 16 levels of intensity.

The same principle is used by LCD displays.
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Old 09-07-2011, 07:10 AM   #7
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ah ok, thanks for the info
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Old 09-07-2011, 07:47 AM   #8
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Quote:
Originally Posted by baggins View Post
Each pixel is divided to four subpixels which are each behind a different colour filter (R,G,B,W).
The same principle is used by LCD displays.
As e-ink is more like paper than LCD (light reflected, not emitted), I'd suspect CMYK would be used, not RGB.
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Old 09-07-2011, 07:57 AM   #9
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Quote:
Originally Posted by 3d0g View Post
As e-ink is more like paper than LCD (light reflected, not emitted), I'd suspect CMYK would be used, not RGB.
Perhaps so. It makes sense.
I wrote RGBW because that's what he said they use in the video. I'm sure he simplified things.
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