Method of manufacturing striped phosphor screen for black matrix type color picture tube
US4267204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1978 |
| Grant date | May 12, 1981 |
| Priority date | — |
| Expiry date | Nov 9, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/227
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the manufacture of a striped phosphor screen for a black matrix type color picture tube, a pattern of stripes of a light-absorbing material is first formed on the faceplate of a glass envelope to define transparent striped windows thereon by a known process and then phosphor materials are applied to the striped windows by the use of a nozzle assembly having at least one nozzle capable of discharging a phosphor material, without owing to the photolighography. The coating apparatus comprises a nozzle assembly including one or more nozzles, drivers for effecting relative movement between the nozzle and the faceplate of the glass envelope in a first direction in the plane of the faceplate and perpendicular to the stripes, in a third direction perpendicular to the faceplate and in a second direction longitudinal of the stripes, sensors for detecting the position of the nozzle, generators for producing a positional error signal and control for controlling the position of the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.