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US5396356A Expired / Lapsed US ⏱️ 0.0 years remaining

Color liquid crystal device with non-driving electrodes under the sealant for providing an even cell gap

Assignee: Seiko Instruments Inc
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Filing: 1993-01-21
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Granted: 1995-03-07
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Expires: 2013-01-21
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Abstract

Abstract A color electrooptical device includes a color filter substrate and a transparent substrate being spaced apart and facing each other. The color filter substrate has a color filter layer and a transparent electrode pattern and the transparent substrate has a transparent electrode pattern. Liquid crystal material is sealed between the two substrates through a sealing portion. A non-driving transparent electrode is interposed between the sealing portion and the color filter substrate and a non-driving transparent electrode is interposed between the sealing portion and the transparent substrate to provide and maintain a uniform cell gap between the two substrates. A method of manufacturing the color electrooptical device is also disclosed.

Inventors

  • 👤 Takakazu Fukuchi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 12:35
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/1335; G02F1/133509; G02F1/133514

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 144 words
A color electrooptical device comprising: a color filter substrate having a color filter layer and a transparent electrode pattern; a transparent substrate having a transparent electrode pattern, said two substrates being spaced apart and facing each other; and a liquid crystal sealed between said two substrates through a sealing portion; wherein a non-driving transparent electrode is interposed between the sealing portion and the color filter substrate and a non-driving transparent electrode is interposed between the sealing portion and the transparent substrate to provide and maintain a uniform cell gap between said two substrates; and wherein an overcoat layer is formed over the color filter layer and on which is formed the transparent electrode pattern, and another non-driving transparent electrode is formed on the color filter substrate beneath the sealing portion and covered by the overcoat layer to provide and maintain the uniform cell gap.
Claim 2
Dependent Claim 144 words
A color electrooptical device comprising: a color filter substrate having a color filter layer and a transparent electrode pattern; a transparent substrate having a transparent electrode pattern, said two substrates being spaced apart and facing each other; and a liquid crystal sealed between said two substrates through a sealing portion; wherein a non-driving transparent electrode is interposed between the sealing portion and the color filter substrate and a non-driving transparent electrode is interposed between the sealing portion and the transparent substrate to provide and maintain a uniform cell gap between said two substrates; and wherein an overcoat layer is formed over the color filter layer and on which is formed the transparent electrode pattern, and another non-driving transparent electrode is formed on the color filter substrate beneath the sealing portion and covered by the overcoat layer to provide and maintain the uniform cell gap.
Claim 3
Independent Claim 149 words
A method of manufacturing a color electrooptical device comprising: forming a color filter substrate having a color filter layer and a transparent electrode pattern; forming a transparent substrate having a transparent electrode pattern; facing said two substrates in spaced-apart relation to each other; and sealing a liquid crystal between said two substrates through a sealing portion; wherein a non-driving transparent electrode is formed between the sealing portion and the color filter substrate and a non-driving transparent electrode is formed between the sealing portion and the transparent substrate to provide and maintain a uniform cell gap between said two substrates; and wherein an overcoat layer is formed over said color filter and on which said transparent electrode pattern is formed, and another non-driving transparent electrode is formed on the color filter substrate beneath the sealing portion and covered by the overcoat layer to provide and maintain the uniform, cell gap.
Claim 4
Independent Claim 149 words
A method of manufacturing a color electrooptical device comprising: forming a color filter substrate having a color filter layer and a transparent electrode pattern; forming a transparent substrate having a transparent electrode pattern; facing said two substrates in spaced-apart relation to each other; and sealing a liquid crystal between said two substrates through a sealing portion; wherein a non-driving transparent electrode is formed between the sealing portion and the color filter substrate and a non-driving transparent electrode is formed between the sealing portion and the transparent substrate to provide and maintain a uniform cell gap between said two substrates; and wherein an overcoat layer is formed over said color filter and on which said transparent electrode pattern is formed, and another non-driving transparent electrode is formed on the color filter substrate beneath the sealing portion and covered by the overcoat layer to provide and maintain the uniform, cell gap.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-03-06 1998-09-05 1999-03-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-03-06 2002-09-05 2003-03-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-03-06 2006-09-05 2007-03-07 $7700.00 Window Closed / Lapsed

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