Method of manufacturing storage target for cathode ray tube
Abstract
Abstract A STORAGE TARGET FOR A CATHODE RAY TUBE IS FORMED BY ADHERING A LAYER OF GLASS TO THE REAR OF A GLASS FACEPLATE AND ETCHING DEPRESSIONS OR APERTURES IN SUCH LAYER. SUCH LAYER IS FORMED OF A MATERIAL WHICH IS EASILY ETCHED BY SUBSTANCES WHICH HAVE SUBSTANTIALLY NO EFFECT UPON THE GLASS FACEPLATE. A PHOTORESIST IS FIRST APPLIED TO THE GLASS LAYER, AND THIS PHOTORESIST EXPOSED TO THE DESIRED PATTERN OF A MESH OR COLLECTOR ELECTRODE HAVING APERTURES THEREIN. THE PHOTORESIST IS DEVELOPED, AND AN ETCHANT IS APPLIED WHICH PRODUCES SUBSTANTIALLY CYLINDRICAL DEPRESSIONS IN THE GLASS LAYER. SECONDARY EMISSIVE DIELECTRIC OR PHOSPHOR MATERIAL APPLIED IN THESE DEPRESSIONS WILL HAVE UNIFORM DEPTH AND THEREFORE UNIFORM STORAGE PROPERTIES. A STORAGE TARGET ACCORDING TO THE PRESENT INVENTION MAY BE PROVIDED WITH A COLLECTOR ON THE GLASS LAYER BETWEEN APERTURES THEREIN, AS WELL AS WITH AN UNDERCOLLECTOR BETWEEN THE GLASS LAYER AND THE FACEPLATE.
Inventors
- 👤 Robert W Morris
Bibliographic Details
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| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
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