Patent US3601967A successfully refreshed from Google Patents.
Patent US3704052A successfully refreshed from Google Patents.
US3704052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a plasma display panel
Assignee: NCR Voyix Corp
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Filing: 1971-05-03
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Granted: 1972-11-28
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Expires: 1991-05-03
Abstract
Abstract A plasma display panel comprising first and second transparent substrates, each having a plurality of spaced parallel conductors on a first surface thereof, and a plurality of spaced, parallel grooves in a second, opposed, surface thereof, with the grooves being aligned with associated conductors on the same substrate. The substrates are assembled with their second surfaces together and with the grooves of the first substrate being positioned at an angle to the grooves of the second substrate so as to form cells at crossover points of the grooves. The grooves of the first and second substrates are made by using the associated conductors as masks to produce self-compensated alignment between conductors and grooves. An electroluminescent material is contained within the grooves.
Inventors
- 👤 William E Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:18
CPC Classifications
H; H01; H01J; H01J11/00; H01J11/10; H01J11/12; H05; H05B; H05B33/00; H05B33/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
The method of producing a plasma display panel comprising the steps of: a. forming a plurality of spaced, parallel conductors on a first surface of a transparent substrate having first and second opposed surfaces; b. depositing a layer of photoresist material on the second surface of said substrate; c. exposing said photoresist while using said conductors as a mask; d. removing the unexposed photoresist and forming grooves in those areas from which the photoresist was removed; e. assembling two of said substrates as obtained from the previous step (d) so that the second surfaces thereof are facing each other with the grooves of the first of the two substrates being at an angle with relation to the grooves of the second of said substrates; f. joining said two substrates together; and g. filling said grooves with an electroluminescent material.
Claim 2
Independent Claim
139 words
The method of producing a plasma display panel comprising the steps of: a. forming a plurality of spaced, parallel conductors on a first surface of a transparent substrate having first and second opposed surfaces; b. depositing a layer of photoresist material on the second surface of said substrate; c. exposing said photoresist while using said conductors as a mask; d. removing the unexposed photoresist and forming grooves in those areas from which the photoresist was removed; e. assembling two of said substrates as obtained from the previous step (d) so that the second surfaces thereof are facing each other with the grooves of the first of the two substrates being at an angle with relation to the grooves of the second of said substrates; f. joining said two substrates together; and g. filling said grooves with an electroluminescent material.
Claim 3
Dependent Claim
29 words
The method as claimed in claim 1 in which said step of forming grooves (step d) is an etching step which produces grooves which are tapered in cross section.
Claim 4
Dependent Claim
28 words
The method as claimed in claim 1 in which said step (f) of joining said two substrates includes a sealing operation to make the assembly formed thereby airtight.
Claim 5
Independent Claim
168 words
The method of producing a plasma display panel comprising the steps of: a. forming a plurality of spaced, parallel transparent conductors, each having an opaque layer of material thereon, on a first surface of a substrate having first and second opposed surfaces; d. depositing a layer of photoresist material on the second surface of said substrate; c. exposing said photoresist material while using said conductors with the opaque layer of material thereon as a mask; d. removing the unexposed photoresist and forming grooves in those areas from which the photoresist was removed; e. removing said opaque layer of material; f. assembling two of said substrates as obtained from the previous step (e) so that the second surfaces thereof are facing each other with the grooves of the first of the two substrates being at an angle to the groove of the second of said substrates; g. sealing said two substrates so as to make the assembly formed thereby airtight; and h. filling said grooves with an electroluminescent material.
Claim 6
Independent Claim
168 words
The method of producing a plasma display panel comprising the steps of: a. forming a plurality of spaced, parallel transparent conductors, each having an opaque layer of material thereon, on a first surface of a substrate having first and second opposed surfaces; d. depositing a layer of photoresist material on the second surface of said substrate; c. exposing said photoresist material while using said conductors with the opaque layer of material thereon as a mask; d. removing the unexposed photoresist and forming grooves in those areas from which the photoresist was removed; e. removing said opaque layer of material; f. assembling two of said substrates as obtained from the previous step (e) so that the second surfaces thereof are facing each other with the grooves of the first of the two substrates being at an angle to the groove of the second of said substrates; g. sealing said two substrates so as to make the assembly formed thereby airtight; and h. filling said grooves with an electroluminescent material.
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |