Patent US5285300A successfully refreshed from Google Patents.
US5285300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal device
Assignee: Canon Inc
•
Filing: 1992-10-05
•
Granted: 1994-02-08
•
Expires: 2012-10-05
Abstract
Abstract A liquid crystal device is constituted by a pair of oppositely spaced substrate each having on its opposite surface a group of stripe electrodes disposed to intersect with those disposed on the other substrate, and a liquid crystal disposed between the substrates so as to be driven by a voltage applied through the stripe electrodes. The group of stripe electrodes on at least one of the pair of substrates are formed through a lithographic step including dividing the stripe electrodes into at least two divisions at a line parallel (or perpendicular) to the extension of the stripe electrodes, and repeating a pattern exposure for each division of the stripe electrodes so as to dispose a joint between the divisions of the stripe electrodes at a non-display part including a spacing between two stripe electrode on the same substrate (or at a part in alignment with a non-display part including a spacing between two stripe electrodes on the opposite substrate). In an embodiment, the liquid crystal device is provided with a dummy electrode pattern for promoting the liquid crystal injection.
Inventors
- 👤 Masaaki Suzuki
- 👤 Yuichi Masaki
- 👤 Toshifumi Yoshioka
- 👤 Mutsuo Mitsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:31
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134336; G02F1/1341
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A liquid crystal device comprising a pair of spaced substrates each having on a surface stripe electrodes disposed to intersect with those disposed on the other substrate, and a liquid crystal disposed between the substrates so as to be driven by a voltage applied through the stripe electrodes; wherein said stripe electrodes on at least one of the pair of substrates are formed through a lithographic step including dividing the stripe electrodes into at least two divisions at a line perpendicular to the extension of the stripe electrodes, and repeating a pattern exposure for each division of the stripe electrodes so as to dispose a joint between the divisions of the stripe electrodes at a part in alignment with a non-display part.
Claim 2
Dependent Claim
122 words
A liquid crystal device comprising a pair of spaced substrates each having on a surface stripe electrodes disposed to intersect with those disposed on the other substrate, and a liquid crystal disposed between the substrates so as to be driven by a voltage applied through the stripe electrodes; wherein said stripe electrodes on at least one of the pair of substrates are formed through a lithographic step including dividing the stripe electrodes into at least two divisions at a line perpendicular to the extension of the stripe electrodes, and repeating a pattern exposure for each division of the stripe electrodes so as to dispose a joint between the divisions of the stripe electrodes at a part in alignment with a non-display part.
Claim 3
Dependent Claim
29 words
A device according to claim 1, wherein said non-display part further includes a region of an opaque metal member disposed on and/or in a vicinity of a stripe electrode.
Claim 4
Dependent Claim
22 words
A device according to claim 2, wherein said opaque metal member is disposed to reduce the electric resistance of the stripe electrode.
Claim 5
Dependent Claim
16 words
A device according to claim 1, wherein said liquid crystal is a chiral smectic liquid crystal.
Claim 6
Dependent Claim
123 words
A liquid crystal device comprising a pair of spaced substrates each having on a surface a stripe electrodes disposed to intersect with those disposed on the other substrate, and a liquid crystal disposed between the substrates so as to be driven by a voltage applied through the stripe electrodes; wherein said stripe electrodes on at least one of the pair of substrates are formed through a lithographic step including dividing the stripe electrodes into at least two divisions at a line parallel to the extension of the stripe electrodes, and repeating a pattern exposure for each division of the stripe electrodes so as to dispose a joint between the divisions of the stripe electrodes at a part in alignment with a non-display part.
Claim 7
Dependent Claim
123 words
A liquid crystal device comprising a pair of spaced substrates each having on a surface a stripe electrodes disposed to intersect with those disposed on the other substrate, and a liquid crystal disposed between the substrates so as to be driven by a voltage applied through the stripe electrodes; wherein said stripe electrodes on at least one of the pair of substrates are formed through a lithographic step including dividing the stripe electrodes into at least two divisions at a line parallel to the extension of the stripe electrodes, and repeating a pattern exposure for each division of the stripe electrodes so as to dispose a joint between the divisions of the stripe electrodes at a part in alignment with a non-display part.
Claim 8
Dependent Claim
29 words
A device according to claim 5, wherein said non-display part further includes a region of an opaque metal member disposed on and/or in a vicinity of a stripe electrode.
Claim 9
Dependent Claim
22 words
A device according to claim 6, wherein said opaque metal member is disposed to reduce the electric resistance of the strip electrode.
Claim 10
Dependent Claim
16 words
A device according to claim 5, wherein said liquid crystal is a chiral smectic liquid crystal.
References Cited (Backward Citations)
GB2102175A
Cited
EP0090079A2
Cited
US4569574A
Cited
US4660935A
Cited
US5026143A
Cited
GB2177533A
Cited
US4687299A
Cited
US4832457A
Cited
US5124826A
Cited
US5000545A
Cited
US4976516A
Cited
EP0385419A1
Cited
US5161043A
Cited
US5056893A
Cited
EP0444580A2
Cited
US5150233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |