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US4850679A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid crystal display panel and manufacturing method thereof

Assignee: Semiconductor Energy Laboratory Co Ltd
•
Filing: 1987-12-28
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Granted: 1989-07-25
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Expires: 2007-12-28
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Abstract

Abstract A liquid crystal device includes a first and second substrate, at least one of which is transparent. A liquid crystal layer is disposed between the first and second substrates, and a plurality of first electrodes are formed on the inside of the first substrate and are arranged in an array. A plurality of second electrodes are formed on the inside of the second substrate and are also arranged in an array, the first electrodes being opposed to a corresponding first electrode to constitute one pixel therebetween. A plurality of nonlinear devices are formed on the inside of the first substrate and are provided for the pixels respectively. The nonlinear devices aligned in a line share one first conductive lead as one electrode for each nonlinear device, and a part of each first electrode functions as the other electrode of a corresponding nonlinear device. A method of manufacturing a liquid crystal device includes forming a semiconductor layer and an underlying conductive layer on a first substrate, removing the semiconductor layer and the conductive layer with a first mask other than at least one part in the form of a strip. The method includes forming an overlying conductive layer over the semiconductor strips, and removing the overlying conductive layer other than a plurality of parts which are to be first electrodes arranged in an array, together with the underlying semiconductor; and mating the first substrate with the second substrate having a plurality of second electrodes corresponding to the first electrodes, with a liquid crystal layer therebetween.

Inventors

  • 👤 Shunpei Yamazaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 05:54
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1365

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 142 words
A method for manufacturing liquid crystal device comprising the step of: forming a semiconductor layer and an underlying conductive layer on a first substrate: removing both said semiconductor layer and said conductive layer, with a first mask, other than a plurality of separate portions in the form of strips; forming an overlying conductive layer over said semiconductor strips; removing both said overlying conductive layer other than a plurality of parts to be first electrodes arranged in an array and the underlying semiconductor, so that the conductive strips formed from said underlying conductive layer by said removing step of said overlying conductive layer and the underlying semiconductor remain as addressing lines for said liquid crystal device: and mating said first substrate with a second substrate having a plurality of second electrodes corresponding to said first electrodes, with a liquid crystal layer in between.
Claim 2
Independent Claim 142 words
A method for manufacturing liquid crystal device comprising the step of: forming a semiconductor layer and an underlying conductive layer on a first substrate: removing both said semiconductor layer and said conductive layer, with a first mask, other than a plurality of separate portions in the form of strips; forming an overlying conductive layer over said semiconductor strips; removing both said overlying conductive layer other than a plurality of parts to be first electrodes arranged in an array and the underlying semiconductor, so that the conductive strips formed from said underlying conductive layer by said removing step of said overlying conductive layer and the underlying semiconductor remain as addressing lines for said liquid crystal device: and mating said first substrate with a second substrate having a plurality of second electrodes corresponding to said first electrodes, with a liquid crystal layer in between.
Claim 3
Dependent Claim 19 words
A method as claimed in claim 1, further comprising the step of insulating the side of the semiconductor strip.
Claim 4
Dependent Claim 15 words
A method as claimed in claim 1, wherein said array is formed in a matrix.

References Cited (Backward Citations)

US3654606A Cited
US4223308A Cited
US4448491A Cited
US4582395A Cited
US4601546A Cited
US4611224A Cited
US4560241A Cited
US4589733A Cited
US4639087A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-07-24 1993-01-23 1993-07-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-07-24 1997-01-23 1997-07-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-07-24 2001-01-23 2001-07-25 $7700.00 Window Closed / Lapsed

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