Patent US5124826A successfully refreshed from Google Patents.
US5124826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal device
Assignee: Canon Inc
•
Filing: 1990-12-13
•
Granted: 1992-06-23
•
Expires: 2010-12-13
Abstract
Abstract A liquid crystal device comprises two electrode plates and a liquid crystal such as a ferro-electric smectic liquid crystal disposed between the electrode plates. At least one electrode plate is provided with a uniaxial orientation treatment. At least one electrode plate comprises a substrate and transparent stripe electrodes and metal electrodes each disposed along the length of and electrically connected with a transparent stripe electrode formed on a substrate. Each metal electrode is disposed along and forms a protrusion sticking out of at least one longitudinal edge of a transparent stripe electrode.
Inventors
- 👤 Toshifumi Yoshioka
- 👤 Takashi Enomoto
- 👤 Naoya Nishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:45
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/16; F21V17/164; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134336; G02F1/13439
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
247 words
A process for producing a liquid crystal device, comprising the steps of: (a) providing two glass substrates, each coated with a film of indium-tin-oxide, (b) patterning the indium-tin-oxide film by photolithography into stripes having a prescribed width disposed at a prescribed pitch, (c) forming a film of aluminum over the stripes of indium-tin-oxide, (d) patterning the aluminum film to leave aluminum stripes each extending along the length of an associated indium-tin-oxide stripe and having a portion overlying a part including a longitudinal edge of the associated indium-tin-oxide stripe in a width narrower than the width of the associated indium-tin-oxide stripe and a portion overlying apart of the glass substrate adjacent to the longitudinal edge of the associated indium-tin-oxide, (e) forming an insulating film and a polyimide film over the glass substrate after the step (d), (f) rubbing the polyimide film on one of the two substrate sin a direction parallel to the lengths of the indium-tin-oxide stripes thereon, and rubbing the polimide film on the other of the two substrates in a direction perpendicular to the lengths of the indium-tn-oxide stripes thereon, said perpendicular direction extending across each indium-tin-oxide strip from its longitudinal edge overlain by an associated one of the aluminum stripes to its opposite longitudinal edge not overlain by an associated one of the aluminum stripes, (g) superposing the two glass substrates on each other to leave a gap therebetween; and (h) injecting a liquid crystal to dispose the liquid crystal between the two substrates.
Claim 2
Dependent Claim
247 words
A process for producing a liquid crystal device, comprising the steps of: (a) providing two glass substrates, each coated with a film of indium-tin-oxide, (b) patterning the indium-tin-oxide film by photolithography into stripes having a prescribed width disposed at a prescribed pitch, (c) forming a film of aluminum over the stripes of indium-tin-oxide, (d) patterning the aluminum film to leave aluminum stripes each extending along the length of an associated indium-tin-oxide stripe and having a portion overlying a part including a longitudinal edge of the associated indium-tin-oxide stripe in a width narrower than the width of the associated indium-tin-oxide stripe and a portion overlying apart of the glass substrate adjacent to the longitudinal edge of the associated indium-tin-oxide, (e) forming an insulating film and a polyimide film over the glass substrate after the step (d), (f) rubbing the polyimide film on one of the two substrate sin a direction parallel to the lengths of the indium-tin-oxide stripes thereon, and rubbing the polimide film on the other of the two substrates in a direction perpendicular to the lengths of the indium-tn-oxide stripes thereon, said perpendicular direction extending across each indium-tin-oxide strip from its longitudinal edge overlain by an associated one of the aluminum stripes to its opposite longitudinal edge not overlain by an associated one of the aluminum stripes, (g) superposing the two glass substrates on each other to leave a gap therebetween; and (h) injecting a liquid crystal to dispose the liquid crystal between the two substrates.
Claim 3
Dependent Claim
16 words
A process according to claim 1, wherein said liquid crystal is a chiral smectic liquid crystal.
References Cited (Backward Citations)
JPS5275454A
Cited
JPS536056A
Cited
US4297004A
Cited
US4326929A
Cited
JPS57133432A
Cited
JPS59129833A
Cited
US4639089A
Cited
US4707079A
Cited
JPS61210325A
Cited
US4778259A
Cited
US4728176A
Cited
US4747671A
Cited
US4818078A
Cited
US4879059A
Cited
EP0324433A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |