CRT front panel with controlled configuration

Details CRT front panel with controlled configuration CRT front panel with controlled configuration

1990-12-26

1992-09-08

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313477R, H01J 2907, H01J 2986

Patent

active

051461323

ABSTRACT:
A means for attaining a predetermined CRT front panel configuration is disclosed as being particularly suitable for use with tensioned-mask CRTs having mask support means affixed to the front panel. A ceramic rail or the like is affixed to the front panel in opposition to the mask support to produce panel deformation forces counteracting those produced by the mask supports. In one embodiment, the panel is deformed more than is ultimately desired and the deformation structures are then ground to produce the desired panel configuration. Repeatability of screen curvature is thereby attained, allowing for interchangeable shadow mask and screen construction of the CRT.

REFERENCES:
patent: 4737681 (1988-04-01), Dietch et al.
patent: 4779023 (1988-10-01), Strauss

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