Liquid crystal pixel correction using pixel boundary detection

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United States of America Patent

PATENT NO 9142175
APP PUB NO 20120147272A1
SERIAL NO

13315697

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Abstract

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A video processing circuit detects a risk boundary that is a part of a boundary between a dark pixel and a bright pixel, and is determined in accordance with the tilt azimuth of liquid crystal molecules from a boundary changed over the previous frame to the current frame and, for at least one side of dark pixels and bright pixels brought into contact with the detected risk boundary, corrects a video signal designating the application voltage of a liquid crystal element corresponding to the pixel of the frame brought into contact with the risk boundary out of a plurality of frames from the current frame to k frames (here, k is a natural number) following the current frame such that a lateral direction electric field generated between the dark pixel and the bright pixel decreases.

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Patent Owner(s)

  • SEIKO EPSON CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hosaka, Hiroyuki Matsumoto, JP 67 386
Kitagawa, Taku Shiojiri, JP 16 81

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