Liquid crystal display panel, driving method and liquid crystal display
First Claim
Patent Images
1. A liquid crystal display device comprising:
- a liquid crystal layer;
a pixel having at least a first sub-pixel region and a second sub-pixel region;
first and second pixel electrodes;
a first active device coupled to the first pixel electrode, the first active device in the first sub-pixel region;
a common electrode, the first pixel electrode, and a portion of the liquid crystal layer forming a first liquid crystal capacitor having a first capacitance;
a first storage capacitor line and a first storage capacitor opposite electrode forming a first storage capacitor having a second capacitance;
a second active device coupled to the second pixel electrode, the second active device in the second sub-pixel region, wherein the second pixel electrode, the common electrode and a portion of the liquid crystal layer form a second liquid crystal capacitor having a third capacitance; and
a second storage capacitor line and a second storage capacitor opposite electrode forming a second storage capacitor having a fourth capacitance;
wherein a first ratio of the first capacitance to the second capacitance is unequal to a second ratio of the third capacitance to fourth capacitance.
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Abstract
In one embodiment of the invention, a pixel unit has two sub-pixel regions each including a liquid crystal capacitor (LCC) and storage capacitor (SC). The capacitance ratio of the SC to LCC of the first sub-pixel differs from the capacitance ratio of the SC to LCC of the second sub-pixel.
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Citations
23 Claims
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1. A liquid crystal display device comprising:
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a liquid crystal layer;
a pixel having at least a first sub-pixel region and a second sub-pixel region;
first and second pixel electrodes;
a first active device coupled to the first pixel electrode, the first active device in the first sub-pixel region;
a common electrode, the first pixel electrode, and a portion of the liquid crystal layer forming a first liquid crystal capacitor having a first capacitance;
a first storage capacitor line and a first storage capacitor opposite electrode forming a first storage capacitor having a second capacitance;
a second active device coupled to the second pixel electrode, the second active device in the second sub-pixel region, wherein the second pixel electrode, the common electrode and a portion of the liquid crystal layer form a second liquid crystal capacitor having a third capacitance; and
a second storage capacitor line and a second storage capacitor opposite electrode forming a second storage capacitor having a fourth capacitance;
wherein a first ratio of the first capacitance to the second capacitance is unequal to a second ratio of the third capacitance to fourth capacitance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for driving a liquid crystal display device that includes a first sub-pixel region and a second sub-pixel region, the first sub-pixel region including a first active device coupled to a scan line, a data line, and a first storage capacitor, the second sub-pixel region including a second active device coupled to the scan line, the data line, and a second storage capacitor;
- the driving method comprising;
applying a scan signal to the scan line;
applying a data signal to the data line;
applying a compensation signal to the first storage capacitor;
applying the compensation signal to the second storage capacitor; and
switching the compensation signal from a first level to a second level based on the scan signal being switched from a high level to a low level. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
- the driving method comprising;
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19. A liquid crystal display device, having a plurality of pixel units arranged in an array, wherein each pixel unit has a plurality of sub-pixel regions, and each pixel unit comprises:
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a plurality of active devices, each of the plurality of active devices being formed in one of the sub-pixel regions and to electrically connect to a scan line and a data line;
a plurality of liquid crystal capacitors, each of the plurality of liquid crystal capacitors formed in one of the sub-pixel regions and to electrically connect to one of the plurality of active devices; and
a plurality of storage capacitors, each of the plurality of storage capacitors formed in one of the sub-pixel regions and to electrically connect to one of the plurality of active devices;
wherein in a same pixel unit, a ratio of the capacitance of the storage capacitor to that of the liquid crystal capacitor of any sub-pixel region is unequal to a ratio of the capacitance of the storage capacitor to that of the liquid crystal capacitor of any other sub-pixel region. - View Dependent Claims (20, 21, 22)
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23. A liquid crystal display device comprising:
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a plurality of pixels, wherein each pixel has plural sub-regions containing respective active devices, storage capacitors, and liquid crystal layer capacitors, the storage capacitors having respective storage capacitor capacitances, and the liquid crystal layer capacitors having respective liquid crystal layer capacitances;
wherein in each pixel a ratio of a storage capacitor capacitance to a liquid crystal layer capacitance in one of the sub-regions is different from a ratio of another storage capacitor capacitance to another liquid crystal layer capacitance in another of the sub-regions.
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Specification