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Old 06-08-2006, 02:36 PM   #1
Alexander Turcic
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Paperlike display running for 12 years and still going strong

Have you ever wondered how long a bistable display could retain its image? Keith Bellamy of Kent Displays was present at the SID 2006 conference in San Francisco where he demonstrated a monochrome display panel based on Kent's Cholesteric LCD (ChLCD) technology that has not been refreshed for 12 years. Most fascinating, the display shows no sign of image burn-in, ghosting, or other artifacts that would have been common with other display technologies after such a long time [Edit: As correctly pointed out by astfgl, from this example alone we cannot tell if that is indeed true, however, it's a claim made by the manufacturer which I like to believe it.]

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Old 06-08-2006, 07:14 PM   #2
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This may be a silly question, but if it hasn't been refreshed for twelve years, how does anyone know if there's ghosting?
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Old 06-08-2006, 07:24 PM   #3
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Quote:
Originally Posted by astfgl
This may be a silly question, but if it hasn't been refreshed for twelve years, how does anyone know if there's ghosting?
You're right, from this example one cannot know. It's one of the claims by those who develop cholesteric lcds, and considering how well the display has performed in twelve years, I'd like to believe it.

Good catch!
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Old 06-08-2006, 11:25 PM   #4
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The only way is to refresh the display with a different image and see if it has ghosting and/or burn-in!

Or wait, what if ... just what if they had like 2 identical set and after 12 years, one of them is refreshed, and hence you know that it does not have ghosting and/or image burn-in, while the one that is not refreshed shows that it retains its contents perpetually. Man, they should get me to device demo plans and Proof-Of-Concepts.

Last edited by Snappy!; 06-08-2006 at 11:27 PM. Reason: typo
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