LIQUID CRYSTAL DISPLAY DEVICE AND ITS DRIVING METHOD

Japanese Patent JP3385530

B2

PROBLEM TO BE SOLVED: To suppress image distortion and afterimage caused by coexistence of fast and slow parts in response speed, by providing this device with a means for alternately and repeatedly displaying a data picture and a black picture.
SOLUTION: A data picture and a black picture are alternately repeatedly displayed in every frame. For example, the display screen is driven so that a data picture 11 is driven in a 1st frame, a black picture 22 in 2nd frame, a data picture 31 in a 3rd frame, a black picture 42 in a 4th frame, and so on. In such a manner, the response speed becomes constant irrespective of picture, and the picture is stabilized and a display without feeling of afterimage is obtained. Further, in the driving method therefor, the polarity of the driving voltage to be applied to the liquid crystal is reversed in every two frames, namely, every two pictures (data picture and black picture), and further, it is also possible to display at a speed two time as fast as a normal frame frequency (50 Hz-80 Hz) or faster by arranging frame memory on the side of a driving circuit module.

JP2004021165	LIQUID CRYSTAL DISPLAY DEVICE
JP3103146	[Title of Invention] Liquid crystal display device
JP2003295831	LIQUID CRYSTAL DRIVER

Takahiko Watanabe

JP21504099A

March 10, 2003

July 29, 1999

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NEC

G09G3/36; G02F1/133; G02F1/1333; G09G3/20; (IPC1-7): G02F1/133; G09G3/36

JP444478A
JP2157813A
JP5303078A
JP11119189A
JP1144891A
JP287881A
JP62250776A
JP4302289A
JP11109921A
JP10268849A

Masahiko Desk (2 outside)

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