US5805252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflection type liquid crystal display and method of producing the same
Assignee: Sharp Corp
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Filing: 1995-09-28
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Granted: 1998-09-08
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Expires: 2015-09-28
Abstract
Abstract A reflection type liquid crystal display comprises a first substrate including a rough portion formed on a surface thereof and a reflection electrode formed on the rough portion; a second substrate including a counter electrode formed thereon; and a liquid crystal layer interposed between the first and second substrates, driven by the reflection electrode and the counter electrode to perform a display. The reflection electrode is made of aluminum or aluminum alloy, and the reflection electrode includes surface oxidation layer having at least 5 nm thickness. The first substrate includes a vertical alignment film made of insulating material formed on the surface oxidation layer of the reflection electrode.
Inventors
- 👤 Yasunori Shimada
- 👤 Seiichi Mitsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:27
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F2203/00; G02F2203/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
A reflection type liquid crystal display comprising: a first substrate including a rough portion formed on a surface thereof and a reflection electrode formed on the rough portion; a second substrate including a counter electrode formed thereon; and a liquid crystal layer interposed between the first and second substrates, driven by the reflection electrode and the counter electrode to perform a display; wherein the reflection electrode comprises aluminum or an aluminum alloy, and the reflection electrode includes a surface oxidation layer, and wherein the first substrate includes a vertical alignment film comprising an insulating material formed on the surface oxidation layer of the reflection electrode.
Claim 2
Dependent Claim
105 words
A reflection type liquid crystal display comprising: a first substrate including a rough portion formed on a surface thereof and a reflection electrode formed on the rough portion; a second substrate including a counter electrode formed thereon; and a liquid crystal layer interposed between the first and second substrates, driven by the reflection electrode and the counter electrode to perform a display; wherein the reflection electrode comprises aluminum or an aluminum alloy, and the reflection electrode includes a surface oxidation layer, and wherein the first substrate includes a vertical alignment film comprising an insulating material formed on the surface oxidation layer of the reflection electrode.
Claim 3
Dependent Claim
28 words
A reflection type liquid crystal display according to claim 1, wherein the surface oxidation layer of the reflection electrode has a thickness of 5 nm to 10 nm.
Claim 4
Dependent Claim
32 words
A reflection type liquid crystal display according to claim 1, wherein the surface of the reflection electrode remains specular and is formed along asperities of the rough portion of the first substrate.
Claim 5
Dependent Claim
19 words
A reflection type liquid crystal display according to claim 1, wherein the liquid crystal layer has a Grandjean texture.
Claim 6
Dependent Claim
100 words
A reflection type liquid crystal display comprising: a first substrate including a rough portion formed on a surface thereof and a reflection electrode formed on the rough portion; a second substrate including a counter electrode formed thereon; and a liquid crystal layer interposed between the first and second substrates, driven by the reflection electrode and the counter electrode to perform a display, wherein the reflection electrode comprises aluminum or an aluminum alloy, and wherein the first substrate includes an oxide film formed on the reflection electrode; and a vertical alignment film comprising an insulating material formed on the oxide film.
Claim 7
Dependent Claim
100 words
A reflection type liquid crystal display comprising: a first substrate including a rough portion formed on a surface thereof and a reflection electrode formed on the rough portion; a second substrate including a counter electrode formed thereon; and a liquid crystal layer interposed between the first and second substrates, driven by the reflection electrode and the counter electrode to perform a display, wherein the reflection electrode comprises aluminum or an aluminum alloy, and wherein the first substrate includes an oxide film formed on the reflection electrode; and a vertical alignment film comprising an insulating material formed on the oxide film.
Claim 8
Dependent Claim
23 words
A reflection type liquid crystal display according to claim 5, wherein the oxide film has a thickness of 50 nm to 100 nm.
Claim 9
Dependent Claim
19 words
A reflection type liquid crystal display according to claim 5, wherein the oxide film is made of silicon oxide.
Claim 10
Dependent Claim
19 words
A reflection type liquid crystal display according to claim 5, wherein the liquid crystal layer has a Grandjean texture.
References Cited (Backward Citations)
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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) | 2001-09-07 | 2002-03-09 | 2002-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-07 | 2006-03-09 | 2006-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-07 | 2010-03-09 | 2010-09-08 | $7700.00 | Window Closed / Lapsed |