US4748445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matrix display panel having a diode ring structure as a resistive element
Assignee: CIIZEN WATCH Co Ltd
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Filing: 1984-07-05
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Granted: 1988-05-31
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Expires: 2004-07-05
Abstract
Abstract A matrix display panel comprising a plurality of liquid crystal display elements. Each liquid crystal display element is connected to a plurality of diode rings which are connected in series between a scanning electrode and a data electrode. Each diode ring comprises a pair of diodes of opposite polarity which are connected in parallel.
Inventors
- 👤 Seigo Togashi
- 👤 Kanetaka Sekiguchi
- 👤 Hiroshi Tanabe
- 👤 Katsumi Aota
- 👤 Kazuaki Sorimachi
- 👤 Etsuo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:03
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/367; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1365
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
204 words
A matrix display panel having a lattice formed by a plurality of column electrodes and a plurality of row electrodes, and a picture element connected to a said column electrode and to a said row electrode at each division of the lattice, each said picture element comprising: a display element and a non-linear resistive element connected in series, said non-linear resistive element including a plurality of diode rings connected in series, each said diode ring including a pair of diodes of opposite polarity connected in parallel, each said diode ring being connected to an adjacent diode ring by a single juncture, wherein said plurality of diode rings is formed by a plurality of forward electrodes and a plurality of reverse electrodes, each said forward and reverse electrode being in the form of a strip, the strips of said forward electrodes intersecting the strips of said reverse electrodes, a pair of said diodes of each diode ring being formed at first intersections of a pair of said forward electrode strips with a pair of said reverse electrode strips, each said juncture of the diode ring being formed at a second intersection of said pairs of forward and reverse electrode strips other than said first intersection.
Claim 2
Dependent Claim
204 words
A matrix display panel having a lattice formed by a plurality of column electrodes and a plurality of row electrodes, and a picture element connected to a said column electrode and to a said row electrode at each division of the lattice, each said picture element comprising: a display element and a non-linear resistive element connected in series, said non-linear resistive element including a plurality of diode rings connected in series, each said diode ring including a pair of diodes of opposite polarity connected in parallel, each said diode ring being connected to an adjacent diode ring by a single juncture, wherein said plurality of diode rings is formed by a plurality of forward electrodes and a plurality of reverse electrodes, each said forward and reverse electrode being in the form of a strip, the strips of said forward electrodes intersecting the strips of said reverse electrodes, a pair of said diodes of each diode ring being formed at first intersections of a pair of said forward electrode strips with a pair of said reverse electrode strips, each said juncture of the diode ring being formed at a second intersection of said pairs of forward and reverse electrode strips other than said first intersection.
Claim 3
Dependent Claim
19 words
A matrix display panel according to claim 1 wherein each said display element is a liquid crystal display element.
Claim 4
Dependent Claim
21 words
A matrix display panel according to claim 1 wherein said row and column electrodes comprise scanning electrodes and data electrodes, respectively.
Claim 5
Dependent Claim
29 words
A matrix display panel according to claim 3 wherein one of said scanning and data electrodes is formed so as to avoid an electrical connection with that said juncture.
Claim 6
Dependent Claim
200 words
A matrix display panel according to claim 3 wherein any one of said diode rings comprises: a first diode formed in an intersection of a first forward electrode strip and a first reverse electrode strip, a second diode formed in an intersection of a second forward electrode strip and a second reverse electrode strip, a first juncture formed in an intersection of the first forward electrode strip and the second reverse electrode strip, and a second juncture formed in an intersection of the first reverse electrode strip and the second forward electrode strip; and a diode ring adjacent to said one diode ring comprises, a first diode formed in an intersection of said second forward electrode strip and a third reverse electrode strip, a second diode formed in an intersection of a third forward electrode strip and said first reverse electrode strip, a first juncture formed in an intersection of the second forward electrode strip and the first reverse electrode strip, and a second juncture formed in an intersection of the third reverse electrode strip and the third forward electrode strip, the second juncture of said adjacent diode ring being common to the first juncture of said one diode ring.
Claim 7
Dependent Claim
21 words
A matrix display panel according to claim 2 wherein said row and column electrodes comprise scanning electrodes and data electrodes, respectively.
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) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |