Method for driving a display panel
AssigneePioneer Corporation
InventorsMasahiro Suzuki, Nobuhiko Saegusa
Life of this patent
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Abstract
Disclosed herein is a method for driving display panels which provides excellent image display suitable for human visual characteristics. The method makes the number of levels of gray scale drive assigned to display images with low brightness greater than that assigned to display images with high brightness in order to drive the display panel with the number of levels of gray scale drive less than the levels of brightness that can be expressed by the pixel data corresponding to an input video signal.
Claims17
A method for driving a display panel in which pixel cells are formed at intersections of a plurality of electrode rows and a plurality of electrode columns arranged so as to intersect said electrode rows, comprising:
- performing a gray scale drive of said display panel by assigning each of N gray scale drive patterns for a unit period to input pixel data based on levels of brightness of said input pixel data,
- wherein each of said N gray scale drive patterns identifies a predetermined unique number of light emissions to be performed within one field period,
- wherein said levels of said brightness of said input pixel data express M levels of gray scale brightness,
- wherein M is greater than N, and
- wherein the number of said gray scale drive patterns assigned to low brightness data of said input pixel data is larger than the number of said gray scale drive patterns assigned to a corresponding amount of high brightness data of said input pixel data.
A method for driving a display device having a pixel, said method comprising:
- inputting pixel data representing a particular brightness level, wherein said particular brightness level is one of M available brightness levels, and wherein M is an integer greater than one;
- driving said pixel of said display device in accordance with a first drive pattern of N available drive patterns when said particular brightness level is contained in a first brightness level group of some of said M available brightness levels, wherein N is an integer greater than one and less than M;
- and
- driving said pixel of said display device in accordance with a second drive pattern of said N available drive patterns when said particular brightness level is contained in a second brightness level group of some of said M available brightness levels,
- wherein said pixel is brighter when said pixel is driven in accordance with said second drive pattern than when said pixel is driven in accordance with said first drive pattern, and
- wherein said first brightness level group comprises a different number of said M available brightness levels than said second brightness level group.
A method for driving a display device having a pixel, said method comprising:
- inputting pixel data representing a particular brightness level, wherein said particular brightness level is one of M available brightness levels, wherein M is an integer greater than one;
- driving said pixel of said display device in accordance with a particular drive pattern of N available drive patterns, wherein N is greater than one and less than M,
- wherein said M available brightness levels increase in brightness from a first brightness level to an Mth brightness level,
- wherein said M available brightness levels are divided into N brightness level groups,
- wherein said N available drive patterns respectively correspond to said N brightness level groups,
- wherein said particular drive pattern is one of said N available drive patterns corresponding to one of said N brightness level groups containing said particular brightness level,
- wherein a first brightness level group to an Xth brightness level group of the N brightness level groups contain said first brightness level to an Ath brightness level,
- wherein an (N−X+1)th brightness level group to said Nth brightness level group contain a Bth brightness level to said Mth brightness level, and
- wherein X is greater than one, A is greater than one, B is greater than A and less than M, and (M−B) is greater than (A−1).
Dependencies are inferred from the claim text.