Liquid crystal display and its driving method
First Claim
Patent Images
1. A liquid crystal display comprising:
- an array substrate including a plurality of pixel electrodes arranged in front and back direction and in right and left direction and disposed in matrix;
a plurality of source lines and a plurality of gate lines arranged so as to cross each other; and
switching devices provided as corresponding to the respective pixel electrodes and having gate electrodes connected to the gate lines, source electrodes connected to the source lines, and drain electrodes connected to the pixel electrodes, for switching between the source electrodes and the drain electrodes in accordance with a drive signal input to the gate electrodes through the gate lines;
an opposing substrate provided with a counter electrode opposite to the array substrate;
liquid crystal filled between the array substrate and the opposing substrate and having different alignment states in a display state and in a non-display state, the liquid crystal being subjected to initialization from the alignment state in the non-display state to the alignment state in the display state before an image is displayed; and
drive means for performing the initialization by inputting voltages with different polarities to two pixel electrodes adjacent in front and back direction, respectively.
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Abstract
A liquid crystal display of the present invention is adapted to perform initialization by inputting voltages with different polarities to two pixel electrodes (23á, 23â) adjacent in front and back direction. It is preferable that in the two pixel electrodes (23á, 23â) adjacent in front and back direction, the pixel electrode (23á) located on back side is provided with a first protrusion (232á) at a front side edge (231á) thereof and in the two pixel electrodes adjacent in front and back direction, the pixel electrode (23â) located on front side is provided with a second protrusion (234â) on a back side edge (233â) thereof.
44 Citations
24 Claims
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1. A liquid crystal display comprising:
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an array substrate including a plurality of pixel electrodes arranged in front and back direction and in right and left direction and disposed in matrix;
a plurality of source lines and a plurality of gate lines arranged so as to cross each other; and
switching devices provided as corresponding to the respective pixel electrodes and having gate electrodes connected to the gate lines, source electrodes connected to the source lines, and drain electrodes connected to the pixel electrodes, for switching between the source electrodes and the drain electrodes in accordance with a drive signal input to the gate electrodes through the gate lines;
an opposing substrate provided with a counter electrode opposite to the array substrate;
liquid crystal filled between the array substrate and the opposing substrate and having different alignment states in a display state and in a non-display state, the liquid crystal being subjected to initialization from the alignment state in the non-display state to the alignment state in the display state before an image is displayed; and
drive means for performing the initialization by inputting voltages with different polarities to two pixel electrodes adjacent in front and back direction, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21)
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11. A liquid crystal display comprising:
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an array substrate including a plurality of pixel electrodes arranged in front and back direction and in right and left direction and disposed in matrix;
a plurality of source lines and a plurality of gate lines arranged so as to cross each other; and
switching devices provided as corresponding to the respective pixel electrodes and having gate electrodes connected to the gate lines, source electrodes connected to the source lines, and drain electrodes connected to the pixel electrodes, for switching between the source electrodes and the drain electrodes in accordance with a drive signal input to the gate electrodes through the gate lines;
an opposing substrate provided with a counter electrode opposite to the array substrate;
liquid crystal filled between the array substrate and the opposing substrate and having different alignment states in a display state and in a non-display state, the liquid crystal being subjected to initialization from the alignment state in the non-display state to the alignment state in the display state before an image is displayed; and
drive means for performing the initialization by inputting voltages with different polarities to two pixel electrodes adjacent in right and left direction, respectively. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 22)
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23. A method for driving a liquid crystal display-comprising:
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an array substrate including a plurality of pixel electrodes arranged in front and back direction and in right and left direction and disposed in matrix;
a plurality of source lines and a plurality of gate lines arranged so as to cross each other; and
switching devices provided as corresponding to the respective pixel electrodes and having gate electrodes connected to the gate lines, source electrodes connected to the source lines, and drain electrodes connected to the pixel electrodes, for switching between the source electrodes and the drain electrodes in accordance with a drive signal input to the gate electrodes through the gate lines;
an opposing substrate provided with a counter electrode opposite to the array substrate; and
liquid crystal filled between the array substrate and the opposing substrate and having different alignment states in a display state and in a non-display state, the liquid crystal being subjected to initialization from the alignment state in the non-display state to the alignment state in the display state before an image is displayed, wherein the initialization is performed by inputting voltages with different polarities to two pixel electrodes adjacent in front and back direction, respectively.
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24. A method for driving a liquid crystal display comprising:
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an array substrate including a plurality of pixel electrodes arranged in front and back direction and in right and left direction and disposed in matrix;
a plurality of source lines and a plurality of gate lines arranged so as to cross each other; and
switching devices provided as corresponding to the respective pixel electrodes and having gate electrodes connected to the gate lines, source electrodes connected to the source lines, and drain electrodes connected to the pixel electrodes, for switching between the source electrodes and the drain electrodes in accordance with a drive signal input to the gate electrodes through the gate lines;
an opposing substrate provided with a counter electrode opposite to the array substrate; and
liquid crystal filled between the array substrate and the opposing substrate and having different alignment states in a display state and in a non-display state, the liquid crystal being subjected to initialization from the alignment state in the non-display state to the alignment state in the display state before an image is displayed, wherein the initialization is performed by inputting voltages with different polarities to two pixel electrodes adjacent in right and left direction, respectively.
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Specification