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US5083853A Expired / Lapsed US ⏱️ 0.0 years remaining

Color liquid crystal display device having light-shielding conductive layers

Assignee: Toshiba Corp
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Filing: 1988-09-20
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Granted: 1992-01-28
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Expires: 2008-09-20
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Abstract

Abstract Disclosed is a color liquid crystal display device having a plurality of pixels, in which conductive films are arranged at regions corresponding to the respective pixels, a light-shielding conductive layer is connected to the conductive films and extends in a region between the pixels, and color filters are formed on the conductive films. In the method of manufacturing such color liquid crystal display device, a light-shielding conductive layer is formed on a substrate, part of the light-shielding layer corresponding to a pixel for which a filter is to be formed is removed from the substrate on which the light-shielding layer is formed and simultaneously the light-shielding layer is partially removed so that portions thereof corresponding to at least pixels having different colors are electrically insulated from each other, a conductive film is formed at a portion corresponding to the pixel for which the filter is to be formed, and films having colors corresponding to those of the respective pixels are formed on the surface of the conductive film.

Inventors

  • 👤 Toshihiro Ueki
  • 👤 Yasuhisa Oana
  • 👤 Hitoshi Tomii

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 19:32
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133512; G02F1/133514

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 124 words
A color liquid crystal display device comprising: a first substrate; a plurality of conductive films formed on said first substrate at a plurality of pixel regions, wherein respective of said conductive films correspond to respective different colors; a plurality of light-shielding conductive layers electrically connected to respective of said plurality of conductive films, said plurality of light-shielding conductive layers being electrically isolated from one another and extending between said pixel regions; a plurality of color filters of different colors formed on respective of said plurality of said conductive films; a second substrate; at least one conductive film formed on said second substrate; and a liquid crystal composition provided between said color filters of said first substrate and said conductive film of said second substrate.
Claim 2
Dependent Claim 124 words
A color liquid crystal display device comprising: a first substrate; a plurality of conductive films formed on said first substrate at a plurality of pixel regions, wherein respective of said conductive films correspond to respective different colors; a plurality of light-shielding conductive layers electrically connected to respective of said plurality of conductive films, said plurality of light-shielding conductive layers being electrically isolated from one another and extending between said pixel regions; a plurality of color filters of different colors formed on respective of said plurality of said conductive films; a second substrate; at least one conductive film formed on said second substrate; and a liquid crystal composition provided between said color filters of said first substrate and said conductive film of said second substrate.
Claim 3
Dependent Claim 44 words
The device of claim 1, further comprising: electrode wiring formed on said second substrate for driving said liquid crystal composition; and an insulating region for insulating said plurality of light-shielding conductive layers from one another, said insulating region being aligned with said electrode wiring.
Claim 4
Independent Claim 22 words
The device of claims 1 or 2, wherein an optical density (O.D.) of said light-shielding conductive layers is not less than 1.5.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-01-27 1995-07-29 1996-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-01-27 1999-07-29 2000-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-01-27 2003-07-29 2004-01-28 $7700.00 Window Closed / Lapsed

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