Method of driving flat panel display apparatus for multi-gradation display
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United States of America Patent
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Oct 3, 2000
Grant Date -
N/A
app pub date -
Nov 12, 1997
filing date -
Nov 12, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
There is proposed is a method of controlling a flat panel display apparatus for multi-gradation display in which a data determination portion and a subfield control portion are provided. Based on a most significant bit or an upper bit of original image data, it is determined in which one of two or more divided gradation groups the original image data is included, to select a combination of subfields in accordance with a gradation-brightness characteristic of the belonging gradation group. Using a complementary relationship with human visibility, a difference in brightness between the gradations in a low-order brightness region is reduced, and a difference in brightness between the gradations in a high-order brightness region is enlarged. Therefore, a density of brightness is uniformly recognized visually over all the brightness regions, and a good quality of display can be obtained.
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