Display panel driving method
AssigneePioneer Corporation
InventorsTetsuya Shigeta, Tetsuro Nagakubo, Hirofumi Honda
Life of this patent
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Abstract
A display panel driving method sequentially writes pixel data of every display line into pixel cells on display lines belonging to a region other than a black display region on a screen, while the method stops writing pixel data into pixel cells on display lines belonging to the black display region or simultaneously sets the pixel cells into a non-light emitting cell state. Since a time spent for each pixel data writing process in one field is reduced, a light emission period (number of times) allocated to each light emission sustain process is increased, or the number of subfields is increased by the reduction in time, thereby making it possible to improve the quality of a displayed image.
Claims11
A display panel driving method for driving a display panel having pixel cells formed at each of intersections of a plurality of row electrodes corresponding to display lines with a plurality of column electrodes arranged to intersect said row electrodes to provide a display in gradation representation in accordance with a video signal, said method comprising:
- performing, in each of a plurality of divided display periods of a unit display period in said video signal, a pixel data writing process for setting each of said pixel cells to either a light emitting cell or a non-light emitting cell in accordance with pixel data corresponding to said video signal to write the pixel data, and a light emission sustain process for causing only said light emission cells to emit light a number of times of light emission allocated thereto corresponding to a weighting factor applied to each of said divided display periods;
- sequentially writing said pixel data of every display line into each of said pixel cells on display lines belonging to a first display region in a display screen on said display panel;
- and
- stopping writing said pixel data into each of said pixel cells on display lines belonging to a second display region in said display screen, or simultaneously setting said pixel cells into said non-light emitting cell.
A display panel driving method for driving a display panel having pixel cells formed at each of intersections of a plurality of row electrodes corresponding to display lines with a plurality of column electrodes arranged to intersect said row electrodes to provide a display in gradation representation in accordance with a video signal, said method comprising:
- performing, in each of a plurality of divided display periods divided from a unit display period in said video signal, a pixel data writing process for setting each of said pixel cells to either a light emitting cell or a non-light emitting cell in accordance with pixel data corresponding to said video signal to write the pixel data, and a light emission sustain process for causing only said light emission cells to emit light a number of times of light emission allocated thereto corresponding to a weighting factor applied to each of said divided display periods,
- wherein said method alternatively performs:
- a first driving sequence for sequentially writing said pixel data of every display line into all said pixel cells in said display panel;
- or
- a second driving sequence for sequentially writing said pixel data of every display line into each of said pixel cells on display lines belonging to a first display region in a display screen on said display panel, and for stopping writing said pixel data into each of said pixel cells on display lines belonging to a second display region in said display screen or simultaneously setting said pixel cells into said non-light emitting cell.
Dependencies are inferred from the claim text.