Patent US5548421A successfully refreshed from Google Patents.
US5548421A
Expired / Lapsed
US
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Plasma addressing electro-optical device having electrodes on a planar surface
Assignee: Sony Corp
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Filing: 1995-04-18
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Granted: 1996-08-20
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Expires: 2015-04-18
Abstract
Abstract A plasma addressing electro-optical device including a first substrate having a major surface: a plurality of first electrodes formed on the major surface of the first substrate so as to extend in substantially parallel relationship to each other; a second substrate having a major surface opposed to the major surface of the first substrate; a plurality of second electrodes formed on the major surface of the second substrate so as to extend in substantially parallel relationship to each other to generate plasma addressing between adjacent ones of the second electrodes; an electro-optical material layer formed between the first substrate and the second substrate; and a plasma discharge chamber formed between the electro-optical material layer and the second substrate so as to seal an ionizable gas therein. The plasma discharge chamber has a height of about 75% or more of a distance between the adjacent ones of the second electrodes. According to the setting of the height of the plasma discharge chamber in relation to the distance between the adjacent second electrodes, stable and uniform plasma discharge in the plasma discharge chamber can be realized.
Inventors
- 👤 Shigeki Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:47
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/13334; G02F1/133374
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A plasma addressed electro-optical device, comprising: a first substrate having a plurality of first electrodes on a major surface of said first substrate; a dielectric material sheet spaced from said first substrate; an electro-optical material layer sandwiched between said first substrate and said dielectric material sheet; a second substrate having a plurality of second electrodes formed on a major planar surface of said second substrate, said second electrodes extending in substantially parallel relationship to each other, said second substrate and said dielectric material sheet being disposed face-to-face to form a plasma discharge chamber therebetween; an ionizable gas within said plasma discharge chamber which forms a plasma discharge between adjacent ones of said second electrodes, said plasma discharge chamber having a height of at least about 75% of a distance between said adjacent ones of said second electrodes on said planar major surface to address display elements of the electro-optical device.
Claim 2
Dependent Claim
150 words
A plasma addressed electro-optical device, comprising: a first substrate having a plurality of first electrodes on a major surface of said first substrate; a dielectric material sheet spaced from said first substrate; an electro-optical material layer sandwiched between said first substrate and said dielectric material sheet; a second substrate having a plurality of second electrodes formed on a major planar surface of said second substrate, said second electrodes extending in substantially parallel relationship to each other, said second substrate and said dielectric material sheet being disposed face-to-face to form a plasma discharge chamber therebetween; an ionizable gas within said plasma discharge chamber which forms a plasma discharge between adjacent ones of said second electrodes, said plasma discharge chamber having a height of at least about 75% of a distance between said adjacent ones of said second electrodes on said planar major surface to address display elements of the electro-optical device.
Claim 3
Dependent Claim
39 words
A plasma addressed electro-optical device according to claim 1, wherein said major surface of said second substrate comprises an upper flat surface, and said second electrodes formed on said upper flat surface have upper surfaces of the same level.
Claim 4
Dependent Claim
22 words
A plasma addressed electro-optical device according to claim 1, further comprising a plurality of barrier ribs for supporting said dielectric material layer.
Claim 5
Dependent Claim
34 words
A plasma addressed electro-optical device according to claim 3, wherein said barrier ribs are formed on said major surface of said second substrate so as to surround said adjacent ones of said second electrodes.
Claim 6
Dependent Claim
112 words
A plasma discharge chamber, comprising: a substrate having a major planar surface; a plurality of electrodes formed on said major planar surface of said substrate so as to extend in substantially parallel relationship to each other; a dielectric material layer formed in opposed relationship to said major planar surface of said substrate so as to define a plasma discharge chamber having a height of at least about 75% of a distance between said adjacent ones of said electrodes; and an ionizable gas in said discharge chamber which forms a plasma discharge between adjacent ones of said second electrodes when said adjacent ones are driven by a drive voltage to address display elements.
Claim 7
Dependent Claim
112 words
A plasma discharge chamber, comprising: a substrate having a major planar surface; a plurality of electrodes formed on said major planar surface of said substrate so as to extend in substantially parallel relationship to each other; a dielectric material layer formed in opposed relationship to said major planar surface of said substrate so as to define a plasma discharge chamber having a height of at least about 75% of a distance between said adjacent ones of said electrodes; and an ionizable gas in said discharge chamber which forms a plasma discharge between adjacent ones of said second electrodes when said adjacent ones are driven by a drive voltage to address display elements.
Claim 8
Dependent Claim
36 words
A plasma discharge chamber, according to claim 5, wherein said major surface of said substrate comprises an upper flat surface, and said electrodes formed on said upper flat surface have upper surfaces of the same level.
Claim 9
Dependent Claim
21 words
A plasma discharge chamber according to claim 5, further comprising a plurality of barrier ribs for supporting said dielectric material layer.
Claim 10
Dependent Claim
32 words
A plasma discharge chamber according to claim 7, wherein said barrier ribs are formed on said major surface of said substrate so as to surround said adjacent ones of said second electrodes.
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) | 1999-08-20 | 2000-02-19 | 2000-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-20 | 2004-02-19 | 2004-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-20 | 2008-02-19 | 2008-08-20 | $7700.00 | Window Closed / Lapsed |