Display device compensating for color irregurality between pixels
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United States of America Patent
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Jun 25, 2002
Grant Date -
Mar 14, 2002
app pub date -
Dec 28, 2000
filing date -
Dec 28, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A large display device whose screen is defined by a matrix of pixels. Each pixel is made up of at least two light-emitting diodes (LEDs): a first LED producing light of first color, and a second LED producing light of second color. The display device includes an LED control circuit designed to actuate the second LED in each pixel by look-up using a correction table to visually mix the light of the second color with the light of the first color produced by a corresponding one of the first LED in a given proportion to minimize a difference in chromaticity of the lights of the first color between the pixels.
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