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US 5,847,688 AGranted
Liquid crystal display apparatus having an increased viewing angle
AssigneeNEC Corporation
InventorsSusumu Ohi, Hiroshi Shiba
Life of this patent
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Abstract
In a liquid crystal display apparatus, the gamma characteristics of an image signal is changed each two frames, so that a driving voltage obtained from the changed gamma characteristics is applied to a liquid crystal. A wide viewing field angle can electrically be realized.
Claims13
A liquid crystal display apparatus, comprising:
- only one liquid crystal display,
- gamma conversion means providing gamma converted signals based on an input image signal, each of said gamma converted signals having a respective selected one of a plurality of different gamma characteristics, said plurality of different gamma characteristics including a .gamma.1 characteristic and a .gamma.2 characteristic different from said .gamma.1 characteristic, and
- means for controlling said gamma conversion means to switch said selected one of said plurality of different gamma characteristics to another of said plurality of different gamma characteristics at each "n" frames of said input image signal (where "n" is natural number);
- wherein said only one liquid crystal display is driven on the basis of said gamma converted signals.
1 more element
Dependencies are inferred from the claim text.