Method for manufacturing a metallized luminescent screen for a cathode-ray tube
US5145511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Nov 8, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/28
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing a metallic, luminescent screen for a CRT includes the steps of: depositing at least one phosphor layer on an inner surface of a faceplate of a panel, to form the luminescent screen; preheating the panel containing the screen to a temperature in excess of a minimum film-forming temperature; and depositing an aqueous emulsion of at least one acrylic film-forming resin onto a screen and drying said emulsion to form the film. Then, a metallic coating is deposited onto the film and the panel bearing the metallized screen is sealed to a funnel by heating the panel and funnel through a sealing cycle. The sealing cycle has predetermined rates of temperature increase and includes a temperature range within which the film is volatilized. The rate of temperature increase within the volatilization range is less than the rate of temperature increase in other portions of the sealing cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.