Pixel array substrate having storage capacitances that vary along a scan line
AssigneeChimei Innolux Corporation
InventorYuan-Liang Wu
Life of this patent
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Abstract
A display device has a pixel array substrate that contains a support substrate and a plurality of pixel areas arranged on the support substrate. Each pixel area contains a pixel electrode and a capacitor electrode. Scan lines and common lines are also provided, where each common line has portions provided in respective pixel areas. Each pixel area has a storage capacitance defined by an overlapping area between a respective capacitor electrode and a respective one of a scan line and common line, where the storage capacitances of pixel areas along each scan line varies along the scan line.
Claims33
A pixel array substrate, comprising:
- a support substrate;
- a first conductor layer, a second conductor layer, and a third conductor layer, the first, second, and third conductor layers on said support substrate;
- a plurality of pixel areas arranged on the support substrate, wherein each pixel area contains a pixel electrode that is part of said third conductor layer, and a capacitor electrode that is part of said second conductor layer;
- and
- scan lines and common lines that are part of said first conductor layer, wherein each common line has portions provided in respective pixel areas,
- wherein each pixel area has a storage capacitance defined by an overlapping area between the respective capacitor electrode and a respective one of the scan line and the common line,
- wherein the storage capacitances of pixel areas along each scan line varies with increasing distance from a first end of each scan line, and
- wherein the first conductor layer and second conductor layer are formed of metal that is electrically conductive and non-transparent.
A liquid crystal display (LCD) device, comprising:
- a counter substrate having a common electrode;
- a pixel away substrate;
- and
- a liquid crystal layer between the counter substrate and the pixel array substrate,
- wherein the pixel away substrate comprises:
- a support substrate;
- a first conductor layer, a second conductor layer, and a third conductor layer, the first, second, and third conductor layers on the support substrate;
- a plurality of pixel areas arranged on the support substrate, wherein each pixel area contains a pixel electrode and a capacitor electrode, wherein the pixel electrodes are part of the third conductor layer, and the capacitor electrodes are p art of the second conductor layer;
- and
- scan lines and common lines that are part of the first conductor layer, wherein each common line has portions provided in respective pixel areas,
- wherein each pixel area has a storage capacitance defined by an overlapping area between the respective capacitor electrode and a respective one of the scan line and common line,
- wherein the storage capacitances of pixel areas along each scan line varies along the scan line, and
- wherein the first conductor layer and second conductor layer are formed of metal that is electrically conductive and non-transparent.
A method of making a display device having a pixel away substrate, the pixel away substrate having first, second, and third conductor layers and having pixel areas, each pixel area having a respective capacitor electrode and a second electrode, the method comprising:
- forming storage capacitances in respective pixel areas, wherein each storage capacitance is formed by overlapping a capacitor electrode with a second electrode in the corresponding pixel area, wherein the capacitor electrodes are part of the second conductor layer, wherein the pixel areas further comprise pixel electrodes that are part of the third conductor layer that is different from the second conductor layer, and wherein the second electrode is part of the first conductor layer that is different from the second and third conductor layers;
- and
- varying the storage capacitances along each of plural scan lines by varying areas of overlap between the capacitor electrodes and the second electrodes.
Dependencies are inferred from the claim text.