Cathode ray tubes with target screens and the manufacture thereof
Abstract
Abstract TARGET SCREENS FOR BEAM-INDEX CATHODE RAY TUBES AND BEAM-INDEX COLOR KINESCOPES ARE DECRIBED WITH RIBS, FILAMENTS, OR PROJECTIONS WHICH SUPPORT OR ALIGN THE BEAMINDEX ELEMENTS WITH THE REMAINDER OF THE SCREEN STRUCTURE. AN ELONGATED SCINTILLATOR-DERIVED LIGHT SOURCE IS POSITIONED PARALLEL TO STRIP-LIKE ELEMENTS OF THE TARGET SCREEN TO REDUCE EXPOSURE TIME WHEN THE PHOTO-RESIST, OR OTHER PHOTOGRAPHIC, METHOD OF SCREEN FABRICATION IS USED. MEANS TO FURTHER SIMPLIFY THE CONSTRUCTION OF TARGET SCREENS FOR COLOR KINESCOPES ARE DESCRIBED WHICH USE PRINTING TECHNIQUES (BRUSH, FLAME-SPRAY, ELECTROSTATIC SPRAY, ETC.) TO DEPOSIT THE DIFFERENT COLOR PRODUCING PHOSPHORS ON THE FACEPLATE IN REGISTER WITH THE INDEX STRIPS.
Inventors
- 👤 David M Goodman
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |