US4270846A
Expired / Lapsed
US
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Electro-optical display device
Assignee: Seiko Instruments Inc
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Filing: 1978-12-21
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Granted: 1981-06-02
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Expires: 1998-12-21
Abstract
Abstract An electro-optical display device comprises electro-optical material sandwiched between a pair of substrates each having formed thereon electrodes. The electrodes on one substrate comprise a segment display electrode part comprised of a plurality of seven-segment electrodes, and a dot matrix display electrode part comprised of a plurality of parallel linear electrodes. The electrodes on the other substrate comprise a complementary counter electrode part corresponding to the segment display electrode part, and a complementary counter electrode part comprised of a plurality of parallel linear electrodes perpendicularly intersecting the linear electrodes formed on the other substrate. The electrode leads which are connected to some of the seven-segment electrodes also comprise some of the linear electrodes of the dot matrix display thereby reducing the overall number of separate electrodes and enabling construction of a more simple display device.
Inventors
- 👤 Masao Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:24
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134327; G02F1/03; G02F1/055; G02F1/0551; G04; G04G; G04G9/00; G04G9/0023; G04G9/0029; G04G9/0035
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
154 words
In an electro-optical display device comprising a transparent first substrate having a transparent first electrode, a second substrate having a second electrode, and an electro-optical material sandwiched between the first and second electrodes; the improvement wherein one of said first and second electrodes comprises a segment display electrode part having a plurality of 7-segment digits each of which forms the figure 8, and a dot matrix display electrode part having many parallel linear electrodes, at least a part of the leads of said 7-segment digits comprising at least some of said dot matrix display electrodes; and wherein the other of said first and second electrodes comprises a counter electrode part corresponding to said segment display electrode part, and another counter electrode part having many parallel linear electrode perpendicularly intersecting said parallel linear electrodes of said dot matrix display electrode part; both the segment display and the dot matrix display being arranged for multiplex drive.
Claim 2
Dependent Claim
154 words
In an electro-optical display device comprising a transparent first substrate having a transparent first electrode, a second substrate having a second electrode, and an electro-optical material sandwiched between the first and second electrodes; the improvement wherein one of said first and second electrodes comprises a segment display electrode part having a plurality of 7-segment digits each of which forms the figure 8, and a dot matrix display electrode part having many parallel linear electrodes, at least a part of the leads of said 7-segment digits comprising at least some of said dot matrix display electrodes; and wherein the other of said first and second electrodes comprises a counter electrode part corresponding to said segment display electrode part, and another counter electrode part having many parallel linear electrode perpendicularly intersecting said parallel linear electrodes of said dot matrix display electrode part; both the segment display and the dot matrix display being arranged for multiplex drive.
Claim 3
Dependent Claim
16 words
An electro-optical display device as claimed in claim 1; wherein said electro-optical material comprises liquid crystal.
Claim 4
Dependent Claim
15 words
An electro-optical display device as claimed in claim 1; wherein said electro-optical material comprises PLZT.
Claim 5
Dependent Claim
21 words
An electro-optical device as claimed in claim 1; wherein said electro-optical material comprises a single crystal material exhibiting the electro-optical effect.
Claim 6
Dependent Claim
38 words
An electro-optical display device as claimed in claim 1; wherein the electro-optical material comprises two electro-optical materials different from one another disposed over respective ones of said segment display electrode part and said dot matrix display electrode part.
Claim 7
Dependent Claim
25 words
An electro-optical display device as claimed in claim 5; wherein said two electro-optical materials comprise different kinds of liquid crystals separated by a sealing member.
Claim 8
Dependent Claim
24 words
An electro-optical display device as claimed in claim 5; wherein at least one of said two electro-optical materials comprises a solid state display element.
Claim 9
Dependent Claim
33 words
An electro-optical display device as claimed in claim 2; wherein said segment display electrode part and said dot matrix display electrode part are formed by alignment treatments which give different liquid crystal orientations.
Claim 10
Dependent Claim
33 words
An electro-optical display device as claimed in claim 6; wherein said segment display electrode part and said dot matrix display electrode part are formed by alignment treatments which give different liquid crystal orientations.
Claim 11
Dependent Claim
70 words
In an electro-optical display device for a timepiece or the like having a segment display comprised of a plurality of 7-segment electrodes and a dot matrix display comprised of a plurality of perpendicularly intersecting linear electrodes, the improvement comprising: a plurality of electrode leads connected to respective ones of the 7-segment electrodes with at least some of said leads comprising some of said linear electrodes of the dot matrix display.
Claim 12
Dependent Claim
70 words
In an electro-optical display device for a timepiece or the like having a segment display comprised of a plurality of 7-segment electrodes and a dot matrix display comprised of a plurality of perpendicularly intersecting linear electrodes, the improvement comprising: a plurality of electrode leads connected to respective ones of the 7-segment electrodes with at least some of said leads comprising some of said linear electrodes of the dot matrix display.
Claim 13
Dependent Claim
23 words
An electro-optical display device according to claim 10; wherein both said segment display and said dot matrix display are disposed for multiplex drive.
Claim 14
Dependent Claim
27 words
An electro-optical display device according to claim 10; wherein said segment display includes a first electro-optical material and said dot matrix display includes a second electro-optical material.
Claim 15
Dependent Claim
17 words
An electro-optical display device according to claim 12; wherein said first and second electro-optical materials are different.
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) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |