Patent US5351144A successfully refreshed from Google Patents.
US5351144A
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Plasma addressed electro-optical device with non-continuous barrier ribs
Assignee: Sony Corp
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Filing: 1993-11-24
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Granted: 1994-09-27
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Expires: 2013-11-24
Abstract
Abstract A plasma addressed electro-optical device comprising a first substrate having a plurality of first electrodes arranged substantially in parallel to each other on a major surface thereof; a second substrate opposed to the first substrate and having a plurality of second electrodes arranged substantially in parallel to each other on a major surface thereof; an electro-optical material layer positioned between the first and second substrates; and a discharge chamber formed between the electro-optical material layer and the second substrate and containing an ionizable gas. The second electrode has a plurality of barrier ribs periodically disposed thereon, and the first and second electrodes are so arranged as to be spaced apart in the vertical and horizontal directions, respectively. And each of the barrier ribs is substantially the same in width as the second electrode. Since the width of each electrode is reducible to be equal to that of the barrier rib, both definition and fineness can be enhanced in the device.
Inventors
- 👤 Shoichi Tanamachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:31
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/13334; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; G09G3/3662; H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J2217/00; H01J2217/38; H01J2217/40; H01J2217/402; H01J2217/4025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
117 words
A plasma addressed electro-optical device comprising: a first substrate having a plurality of first electrodes arranged substantially in parallel to each other on a major surface thereof; a second substrate opposed to the first substrate and having a plurality of second electrodes arranged substantially in parallel to each other on a major surface thereof, each said second electrode having a plurality of barrier ribs periodically disposed thereon, the first and second electrodes being arranged so that they are spaced apart in the vertical and horizontal directions, respectively; an electro-optical material layer positioned between the first and second substrates; and a discharge chamber formed between the electro-optical material layer and the second substrate and containing an ionizable gas.
Claim 2
Dependent Claim
117 words
A plasma addressed electro-optical device comprising: a first substrate having a plurality of first electrodes arranged substantially in parallel to each other on a major surface thereof; a second substrate opposed to the first substrate and having a plurality of second electrodes arranged substantially in parallel to each other on a major surface thereof, each said second electrode having a plurality of barrier ribs periodically disposed thereon, the first and second electrodes being arranged so that they are spaced apart in the vertical and horizontal directions, respectively; an electro-optical material layer positioned between the first and second substrates; and a discharge chamber formed between the electro-optical material layer and the second substrate and containing an ionizable gas.
Claim 3
Dependent Claim
25 words
A plasma addressed electro-optical device as claimed in claim 1, wherein each of said barrier ribs has much the same width as the second electrode.
Claim 4
Dependent Claim
29 words
A plasma addressed electro-optical device as claimed in claim 1, wherein said barrier ribs disposed on adjacent second electrodes have a pattern of stripes extended in a column direction.
Claim 5
Dependent Claim
31 words
A plasma addressed electro-optical device as claimed in claim 1, wherein said barrier ribs disposed on adjacent second electrodes have a pattern of stripes shifted every column in a row direction.
Claim 6
Dependent Claim
20 words
A plasma addressed electro-optical device as claimed in claim 1, wherein said electro-optical material layer is a liquid crystal layer.
Claim 7
Dependent Claim
20 words
A plasma addressed electro-optical device as claimed in claim 1, wherein said second electrodes are formed by a printing procedure.
Claim 8
Dependent Claim
17 words
A plasma addressed electro-optical device as claimed in claim 6, wherein said printing procedure is screen printing.
Claim 9
Dependent Claim
20 words
A plasma addressed electro-optical device as claimed in claim 6, wherein said barrier ribs are formed by a printing procedure.
Claim 10
Dependent Claim
17 words
A plasma addressed electro-optical device as claimed in claim 8, wherein said printing procedure is screen printing.
Claim 11
Dependent Claim
42 words
A plasma addressed electro-optical device as claimed in claim 1, further comprising an intermediate sheet of dielectric material disposed between the electro-optical material layer and the discharge chamber to form an isolating barrier between the electro-optical material layer and the ionizable gas.
Claim 12
Dependent Claim
23 words
A plasma addressed electro-optical device as claimed in claim 10, wherein each barrier rib has an upper end which contacts the intermediate sheet.
Claim 13
Dependent Claim
49 words
An addressing structure comprising: a substrate having a plurality of electrodes on a major surface thereof, each electrode having a plurality of barrier ribs periodically disposed thereon; a dielectric material layer opposed to the substrate; and an ionizable gaseous medium filled between the substrate and the dielectric material layer.
Claim 14
Dependent Claim
49 words
An addressing structure comprising: a substrate having a plurality of electrodes on a major surface thereof, each electrode having a plurality of barrier ribs periodically disposed thereon; a dielectric material layer opposed to the substrate; and an ionizable gaseous medium filled between the substrate and the dielectric material layer.
Claim 15
Dependent Claim
22 words
An addressing structure as claimed in claim 12, wherein each barrier rib has an upper end which contacts the dielectric material layer.
Claim 16
Dependent Claim
17 words
An addressing structure as claimed in claim 12, wherein said electrodes are formed by a printing procedure.
Claim 17
Dependent Claim
18 words
An addressing structure as claimed in claim 14, wherein said barrier ribs are formed by a printing procedure.
References Cited (Backward Citations)
LU65005A1
Cited
EP0185115A1
Cited
EP0325387A2
Cited
US4896149A
Cited
JPH02221996A
Cited
US5175473A
Cited
US5229685A
Cited
US5214521A
Cited
US5221979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-26 | 1998-03-28 | 1998-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-26 | 2002-03-28 | 2002-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-26 | 2006-03-28 | 2006-09-27 | $7700.00 | Window Closed / Lapsed |