Face plate for color pick-up tube
US4107568A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 15, 1974 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Nov 15, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A face plate for a color pick-up tube which comprises a transparent substrate, stripe-like color filters formed on the transparent substrate, a protection layer deposited so as to cover the stripe color filters and the exposed portions of the transparent substrate, stripe-like transparent electrodes formed on predetermined portions of the protection layer, a photoconductive layer, bus bar electrodes and an insulation layer. The insulation layer and the protection layer are, respectively, formed of different materials which have different resistances to an etching solution, whereby the stripe-like filters are protected from the adverse influence of the etching solution used to form the insulation layer by a photoetching treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.