US3790841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge display field for multicolor display
Assignee: International Business Machines Corp
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Filing: 1973-01-15
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Granted: 1974-02-05
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Expires: 1993-01-15
Abstract
Abstract A gas discharge display/storage apparatus in which a multicolor display is achieved by a combination of a modified plasma display apparatus and associated cell driving configuration. The apparatus includes two display panels in a sandwich arrangement having one common drive line, the drive system comprising a three-coordinate nonorthogonal selections system, each of the coordinates being displaced by 120*. The individual cells may be arranged in various configurations, each cell having a phosphor representative of one of three basic colors, red, blue and green, whereby coincident selection of selected cells provide the multicolor display.
Inventors
- 👤 F Tsui
- 👤 K Tsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:27
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
175 words
Gas discharge display apparatus for multicolor information display by means of the three basic colors red, blue and green utilizing suitably modified gas discharge devices (known from single color display) comprising in combination, a flat gas-filled discharge display panel made to emit light by ionization and whose opposite sides limiting the discharge path include a plane of parallel electric conductors, the conductors of the two sides being oriented in different directions, the crossings of the conductor pairs defining discharge cells, characterized in that at least two discharge spaces (8, 9) are provided which are separated from each other in the direction of discharge, that the conductors of a conductor field pair are disposed at an angle of about 60* in relation to each other, that the conductors of all conductor field pairs are disposed in three directions differing from each other by about 60 and that in each of these directions discharge cells for two of the three basic colors are alternately arranged, each discharge cell for one basic color being common to two directions.
Claim 2
Dependent Claim
175 words
Gas discharge display apparatus for multicolor information display by means of the three basic colors red, blue and green utilizing suitably modified gas discharge devices (known from single color display) comprising in combination, a flat gas-filled discharge display panel made to emit light by ionization and whose opposite sides limiting the discharge path include a plane of parallel electric conductors, the conductors of the two sides being oriented in different directions, the crossings of the conductor pairs defining discharge cells, characterized in that at least two discharge spaces (8, 9) are provided which are separated from each other in the direction of discharge, that the conductors of a conductor field pair are disposed at an angle of about 60* in relation to each other, that the conductors of all conductor field pairs are disposed in three directions differing from each other by about 60 and that in each of these directions discharge cells for two of the three basic colors are alternately arranged, each discharge cell for one basic color being common to two directions.
Claim 3
Dependent Claim
23 words
An arrangement in accordance with claim 1, characterized in that the light-emitting area of a discharge cell is circular for each basic color.
Claim 4
Dependent Claim
28 words
An arrangement in accordance with claim 2, characterized in that the circular light-emitting areas of the discharge cells for the different basic colors adjoin each other without gaps.
Claim 5
Dependent Claim
61 words
An arrangement in accordance with claim 2, characterized in that the two successive unidirectionally disposed light-emitting areas of the discharge cells for two basic colors, which form one subgroup, adjoin each other without gaps, and that the various subgroups are physically separated from each other in such a manner that each group comprises three light-emitting areas for the three basic colors.
Claim 6
Dependent Claim
23 words
An arrangement in accordance with claim 1, characterized in that the light-emitting area of said discharge cells for one basic color are diamond-shaPed.
Claim 7
Dependent Claim
23 words
An arrangement in accordance with claim 5, characterized in that said diamond-shaped light-emitting areas of said discharge cells adjoin each other without gaps.
Claim 8
Dependent Claim
46 words
An arrangement in accordance with claim 1, characterized in that said discharge cells are not physically separated from each other by walls, and that an element (3, 4) phosphorescent in one of the three basic colors is associated with said discharge cells of said discharge spaces.
Claim 9
Dependent Claim
38 words
An arrangement in accordance with claim 1 characterized in that said discharge cells are physically separated from each other by walls and are filled with gases for each one of the three basic colors red, blue and green.
Claim 10
Dependent Claim
54 words
An arrangement in accordance with claim 8, characterized in that for each of the three basic colors one discharge space (5, 6, 7) is provided, and that between the external spaces (5, 7) and the center discharge spaces (6) a conductor field (21, 31) is sandwiched which is common to the two discharge spaces.
Claim 11
Dependent Claim
124 words
An arrangement in accordance with claim 8, characterized in that there is provided for one of the three basic colors a first discharge space (9) with one conductor field pair, and for the remaining two basic colors a second discharge space (8) with a conductor field X (31) on one side, and two conductor fields Y and Z (11 and 21) extending in different directions on the other side, and that the discharge cells of one basic color in the second discharge space (8) are addressable via the X and Y conductor field pairs (31 and 11), the discharge cells for the other basic color in the second discharge space (8) being addressable via the conductor field pair X and z (31 and 21).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |