Thin film transistor array panel and method for repairing liquid crystal display including the same
First Claim
1. A thin film transistor array panel, comprising:
- a first insulating substrate;
a storage electrode over the first insulating substrate;
an insulating layer over the storage electrode;
a drain electrode of a transistor over the insulating layer;
a color filter stripe over the drain electrode; and
a pixel electrode over the color filter stripe, the pixel electrode being operably coupled to the drain electrode via an aperture through the color filter stripe, wherein the aperture is directly over the storage electrode.
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Accused Products
Abstract
A thin film transistor (TFT) array panel, a liquid crystal display (LCD), and a method of repairing a TFT array panel with a defective pixel is disclosed. When a white defect occurs such that a pixel is always in a white state, a corresponding pixel electrode is supplied with the predetermined voltage applied to a corresponding storage electrode line so that the pixel becomes permanently dark, which may not be easily detected. The connection between the pixel electrode and the storage electrode line is provided by illuminating a laser beam from a common electrode panel through a contact hole in the TFT array panel to electrically couple the storage electrode and the pixel electrode. Advantageously, a backlight unit or chassis does not need to be separated or disassembled from the LCD when repairing the defect. Furthermore, the color filter stripes and the light blocking member are not damaged, thereby improving the reliability of the repair.
22 Citations
22 Claims
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1. A thin film transistor array panel, comprising:
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a first insulating substrate;
a storage electrode over the first insulating substrate;
an insulating layer over the storage electrode;
a drain electrode of a transistor over the insulating layer;
a color filter stripe over the drain electrode; and
a pixel electrode over the color filter stripe, the pixel electrode being operably coupled to the drain electrode via an aperture through the color filter stripe, wherein the aperture is directly over the storage electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A liquid crystal display (LCD), comprising:
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a first panel including;
a first insulating substrate, a storage electrode over the first insulating substrate, an insulating layer over the storage electrode, a drain electrode of a transistor over the insulating layer, a color filter stripe over the drain electrode, and a pixel electrode over the color filter stripe, the pixel electrode being operably coupled to the drain electrode via an aperture through the color filter stripe, wherein the aperture is directly over the storage electrode;
a second panel including;
a second insulating substrate, a light blocking member not overlapping the aperture, and a common electrode over the light blocking member and the second insulating substrate; and
a liquid crystal layer between the first panel and the second panel. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for repairing a liquid crystal display (LCD) having a thin film transistor (TFT) array panel with a defective pixel, the TFT array panel including a storage electrode, an insulating layer over the storage electrode, a drain electrode of a transistor over the insulating layer, a color filter stripe over the drain electrode, and a pixel electrode over the color filter stripe, the pixel electrode being operably coupled to the drain electrode via an aperture through the color filter stripe, the method for repairing comprising:
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providing a laser beam through the aperture until the pixel electrode is electrically coupled to the storage electrode; and
electrically isolating the drain electrode from the transistor. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification