US4709992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal matrix display device having opposed diode rings on substrates
Assignee: Fuji Electric Co Ltd
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Filing: 1986-12-09
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Granted: 1987-12-01
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Expires: 2006-12-09
Abstract
Abstract A liquid crystal display employs two transparent substrates between which are positioned the liquid crystal elements for excitation. One substrate includes a linear array of row control electrodes and one set of picture element electrodes and the other includes a linear array of column control electrodes and an opposite set of picture element electrodes. On each substrate, each picture element electrode is connected to a control electrode by way of a pair of single-stage diodes connected in parallel but oppositely poled.
Inventors
- 👤 Masakazu Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1365
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
63 words
A liquid crystal matrix display comprising a pair of transparent substrates, between which is positioned a liquid crystal material for excitation, each substrate supporting an array of control elecrodes and a set of picture element electrodes, characterized in that on each substrate a diode ring comprising a parallel pair of oppositely-poled diodes is connected between each picture element electrode and its control electrode.
Claim 2
Dependent Claim
63 words
A liquid crystal matrix display comprising a pair of transparent substrates, between which is positioned a liquid crystal material for excitation, each substrate supporting an array of control elecrodes and a set of picture element electrodes, characterized in that on each substrate a diode ring comprising a parallel pair of oppositely-poled diodes is connected between each picture element electrode and its control electrode.
Claim 3
Dependent Claim
42 words
A display in accordance with claim 1 in which the two substrates are disposed so that the two sets of picture element electrodes substantially overlap, the control electrodes on the two substrates are substantially orthogonal, and the diode rings are nearly opposite.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |