LIQUID CRYSTAL DISPLAY HAVING STRIPE-SHAPED COMMON ELECTRODES FORMED ABOVE PLATE-SHAPED PIXEL ELECTRODES
First Claim
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1. An electrode structure of a wide viewing angle liquid crystal display comprising:
- a scan signal line;
a data signal line substantially perpendicular to said scan signal line, said scan signal line and said data signal line defining a pixel area;
a pixel electrode in said pixel area; and
a plurality of common electrodes running substantially in parallel with said data signal line and extending above said scan signal line, said common electrodes being above said pixel electrode.
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Abstract
An electrode structure has independent pixel electrodes and connected common electrodes for a wide viewing angle liquid crystal display. The pixel electrode being a plate-shaped structure is fabricated on a lower layer above a substrate. The common electrode being a striped-shape structure is formed in an upper layer above the substrate. The common electrode may be a herringbone-shaped structure. The pixel electrodes and the common electrodes may overlay the data signal lines of the liquid crystal display. The arrangement of the electrode structure increases the effective light transmission. The electrode structure has the advantages that the tolerance for an electrostatic breakdown or residual electric charges is increased, and reproduction process is simplified.
3847 Citations
24 Claims
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1. An electrode structure of a wide viewing angle liquid crystal display comprising:
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a scan signal line;
a data signal line substantially perpendicular to said scan signal line, said scan signal line and said data signal line defining a pixel area;
a pixel electrode in said pixel area; and
a plurality of common electrodes running substantially in parallel with said data signal line and extending above said scan signal line, said common electrodes being above said pixel electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of fabricating an electrode structure for a wide viewing angle liquid crystal display comprising the steps of
(a) preparing a glass substrate; -
(b) forming a scan signal line on said substrate;
(c) covering said substrate and said scan line with an insulation layer;
(d) forming a pixel electrode above said insulation layer;
(e) forming an island region for an active switching device above said insulation layer;
(f) forming a data signal line above said island region, said data signal line being perpendicular to said scan signal line;
(g) covering said data signal line, said island region, and said pixel electrode with a passivation layer; and
(h) forming a plurality of common electrodes running in parallel with said data signal line and extending above said scan signal line, said common electrodes being above said pixel electrode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 20)
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17. A method of fabricating an electrode structure for a wide viewing angle liquid crystal display comprising the steps of:
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(a) preparing a glass substrate;
(b) forming a scan signal line on said substrate;
(c) covering said substrate and said scan line with a first insulation layer;
(d) forming an island region for an active switching device above said first insulation layer;
(e) forming a data signal line above said island region, said data signal line being perpendicular to said scan signal line;
(f) covering said data signal line and said island region with a passivation layer;
(g) forming a pixel electrode above said passivation layer;
(h) covering said data signal line, said island region, and said pixel electrode with a second insulation layer; and
(i) forming a plurality of common electrodes running in parallel with said data signal line and extending above said scan signal line, said common electrodes being above said pixel electrode. - View Dependent Claims (18, 19, 21, 22, 23, 24)
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Specification
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Current AssigneeIndustrial Technology Research Institute
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Original AssigneeIndustrial Technology Research Institute
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InventorsTAI, YA-HSIANG, CHUANG, LISEN, CHEN, CHIH-HONG
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Application NumberUS09/444,141Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current349/159CPC Class CodesG02F 1/134363 for applying an electric fi...G02F 1/136227 Through-hole connection of ...G02F 2201/121 common or background
