Patent US5107355A successfully refreshed from Google Patents.
US5107355A
Expired / Lapsed
US
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Liquid crystal display device having layered bus line structure
Assignee: Konica Minolta Inc
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Filing: 1990-02-12
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Granted: 1992-04-21
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Expires: 2010-02-12
Abstract
Abstract The invention provides a liquid crystal display device which includes a transparent substrate; transparent pixel electrodes arranged in the form of a matrix on the transparent substrate; active elements for switching the pixel electrodes, the active element provided to each of said pixel electrodes and having a laminated structure; and bus line provided among the pixel electrodes. The bus line includes a transparent conductive layer provided on the transparent substrate; a first wiring layer superimposed on the transparent conductive layer; and a second wiring layer superimposed on the first wiring layer. The second wiring layer has a branch portion which is extended from a position on the first wiring layer onto the transparent substrate, and the branch portion used as an electrode on the transparent substrate side in the laminated structure of the active element.
Inventors
- 👤 Taxay Satoh
- 👤 Hiroshi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:47
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; H; H10; H10D; H10D86/00; H10D86/40; H10D86/441; H10D86/60; G02F1/136286; G02F1/13629
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
102 words
A liquid crystal display device, comprising: a transparent substrate; transparent pixel electrodes arranged in matrix form on said transparent substrate; active elements provided to each of said pixel electrodes for switching said pixel electrodes; and a bus line, provided among said pixel electrodes and comprising at least three layers including a transparent conductive layer provided on said transparent substrate as the lower most layer among said at least three layers, a first wiring layer, and a second wiring layer, said second wiring layer having a branch portion extending to said active elements, said branch portion being an electrode for said active elements.
Claim 2
Dependent Claim
102 words
A liquid crystal display device, comprising: a transparent substrate; transparent pixel electrodes arranged in matrix form on said transparent substrate; active elements provided to each of said pixel electrodes for switching said pixel electrodes; and a bus line, provided among said pixel electrodes and comprising at least three layers including a transparent conductive layer provided on said transparent substrate as the lower most layer among said at least three layers, a first wiring layer, and a second wiring layer, said second wiring layer having a branch portion extending to said active elements, said branch portion being an electrode for said active elements.
Claim 3
Dependent Claim
23 words
The device of claim 1, wherein said active elements are selected from the group consisting of two terminal elements and three terminal elements.
Claim 4
Dependent Claim
30 words
The device of claim 2, wherein said elements are two terminal elements which are selected from the group consisting of MIM, back-to-back Shottky diode, ring diode, MSI and non-linear elements.
Claim 5
Dependent Claim
27 words
The device of claim 3, wherein said active elements are non-linear elements which are selected from the group consisting of AS 2 Se 3 and Barister elements.
Claim 6
Dependent Claim
27 words
The device of claim 3, wherein said active elements are diodes which are selected from the group consisting of pn junction, pin junction, and hetero junction structures.
Claim 7
Dependent Claim
39 words
The device of claim 2, wherein said active elements are three terminal elements which are selected from the group consisting of normal stagger TFT, reverse stagger TFT, amorphous silicon type TFT, polysilicon type TFT, and CdSe type TFT elements.
Claim 8
Dependent Claim
28 words
The device of claim 1, wherein said first wiring layer is selected from the group consisting of chrome, aluminum, tantalum, molybdenum, palladium, nickel, titanium, copper, gold, and silver.
Claim 9
Dependent Claim
20 words
The device of claim 1, wherein the electrical resistance of said first wiring layer is not higher than 10 Ω/□.
Claim 10
Dependent Claim
33 words
The device of claim 1, wherein, when said active elements are back-to-back Shottky diodes, and said second wiring layer is selected from the group consisting of palladium, platinum, nickel, chrome, nickel-chrome, and molybdenum.
Claim 11
Dependent Claim
30 words
The device of claim 1, wherein, said active elements are MIM, and said second siring layer is selected from the group consisting of tantalum, aluminum, chrome, nickel, copper and gold.
Claim 12
Dependent Claim
32 words
The device of claim 1, wherein said active elements are reverse stagger TFT, and said second wiring layer is selected from the group consisting of tantalum, molybdenum, molybdenum-tantalum, chrome, aluminum, and titanium.
Claim 13
Dependent Claim
32 words
The device of claim 1, wherein said active elements are normal stagger TFT, and said second wiring layer is selected from the group consisting of chrome, titanium, aluminum, molybdenum, chrome-aluminum, and molybdenum-aluminum.
Claim 14
Dependent Claim
19 words
The device of claim 1, wherein the thickness of said second wiring layer is not thicker than 1000 Å.
Claim 15
Dependent Claim
18 words
The device of claim 13, wherein the thickness of said second wiring layer is 100 to 500 Å.
Claim 16
Dependent Claim
29 words
The device of claim 1, wherein said first wiring layer is superimposed on said transparent conductive layer and said second wiring layer is superimposed on said first wiring layer.
Claim 17
Dependent Claim
17 words
The device of claim 15, wherein said branch line has a portion that contacts said transparent substrate.
Claim 18
Dependent Claim
133 words
A liquid crystal display device, comprising: a transparent substrate; transparent pixels electrodes arranged in matrix form on said transparent substrate; active elements provided to each of said pixel electrodes, for switching said pixel electrodes, and a bus line provided among said pixel electrodes and comprising at least three layers including a transparent conductive layer, a first wiring layer and a second wiring layer, said transparent conductive layer formed on said transparent substrate as the lowermost layer among said three layers; said first wiring layer disposed on said transparent conductive layer and having the lowest electrical resistance among said three layers; and said second wiring layer disposed on said transparent conductive layer and having a branch line extending from said bus line to said active elements which serves as electrode to said active elements.
Claim 19
Dependent Claim
133 words
A liquid crystal display device, comprising: a transparent substrate; transparent pixels electrodes arranged in matrix form on said transparent substrate; active elements provided to each of said pixel electrodes, for switching said pixel electrodes, and a bus line provided among said pixel electrodes and comprising at least three layers including a transparent conductive layer, a first wiring layer and a second wiring layer, said transparent conductive layer formed on said transparent substrate as the lowermost layer among said three layers; said first wiring layer disposed on said transparent conductive layer and having the lowest electrical resistance among said three layers; and said second wiring layer disposed on said transparent conductive layer and having a branch line extending from said bus line to said active elements which serves as electrode to said active elements.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-21 | 1995-10-21 | 1996-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-21 | 1999-10-21 | 2000-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-21 | 2003-10-21 | 2004-04-21 | $7700.00 | Window Closed / Lapsed |