G - Physics – 09 – G
Patent
G - Physics
09
G
375/4
G09G 5/00 (2006.01) G09G 3/36 (2006.01) H04N 3/12 (2006.01)
Patent
CA 2011606
A frame thinning out system has been used as a driving method for a display device for making a gradational display with several brightness levels on the screen of a liquid crystal display device and the like. In accordance with the present invention, a driving method for a display device sets a plurality of frame time periods, during which each of the pixels on the screen of the display device is controlled for displaying an image, as one integration time period, and turning on pixels only for a number of specified frame time periods corresponding to a brightness level to be displayed out of all frame time periods within the integration time period. In this driving method all pixels of the display device are grouped into a plurality of groups each of which is composed of a plurality of pixels contiguous to each other, the number of pixels to be turned on in each frame time period within one integration time period is selected corresponding to the specified gradation data within the same group, and the frame time period during which the number of pixels turned on is kept constant and is set to a period so short that a human does not feel flicker. In this way, a gradational display without noticeable flicker can be obtained when viewing a plurality of pixels of one group as a unit image area.
Maeda Hiroshi
Omori Takuro
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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