Liquid crystal display device and method of driving the same
AssigneesFujitsu Display Technologies Corporation, Au Optronics Corporation
InventorsTakahiro Sasaki, Yuichi Inoue, Mikio Oshiro, Kenko Honda
Life of this patent
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Abstract
In driving a liquid crystal display device having an alignment regulating structure for regulating liquid crystal, when the display state of the pixel is to be changed from a dark display to a bright display, a difference between the magnitude of a voltage Vd4 applied to the liquid crystal of the pixel at the beginning of the first frame and the magnitude of a voltage Vd3 applied to the liquid crystal of the pixel in the second frame or a subsequent frame, is set to be greater than a voltage Vod that decreases in the first frame due to an increase in the liquid crystal capacitance of the pixel.
Claims13
A liquid crystal display device comprising:
- a pair of substrates arranged facing each other;
- liquid crystal sealed between the pair of substrates;
- an alignment regulating structure formed on at least either one of the pair of substrates for regulating the alignment of the liquid crystal;
- a switching element formed on one of the pair of substrates;
- a plurality of bus lines connected to the switching element;
- a bus line drive circuit portion for feeding predetermined drive signals to the plurality of bus lines;
- and
- a control circuit portion for so controlling the bus line drive circuit portion that, when a display state of a pixel is to be changed from a dark display to a bright display having a brightness higher than that of the dark display, a difference between magnitude of a first voltage applied to the liquid crystal of the pixel at the beginning of a first frame for changing the display state and magnitude of a second voltage applied to the liquid crystal of the pixel in a second frame or a subsequent frame following the first frame, becomes greater than magnitude of voltage change occurring in the first frame due to a change in the liquid crystal capacitance of the pixel.
A method of driving a liquid crystal display device having a structure for regulating an alignment of liquid crystal, wherein when a display state of a pixel is to be changed from a dark display to a bright display having a brightness higher than that of the dark display, a difference between magnitude of a first voltage applied to the liquid crystal of the pixel at the beginning of a first frame for changing the display state and magnitude of a second voltage applied to the liquid crystal of the pixel in a second frame or a subsequent frame following the first frame, is set to be greater than magnitude of voltage change occurring in the first frame due to a change in the liquid crystal capacitance of the pixel.
Dependencies are inferred from the claim text.