Shielding means and process for use in the manufacture of tensio

Details Shielding means and process for use in the manufacture of tensio Shielding means and process for use in the manufacture of tensio

1989-04-11

1990-01-02

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

21912172, H01J 920

Patent

active

048910287

ABSTRACT:
Shielding means are disclosed for use in the manufacture of a tension mask color cathode ray tube having a glass faceplate and a substantially rectangular mask support structure having outwardly tapered sides for deflecting a mask-trimming laser beam away from the glass. The shielding means according to the invention are detachably supported by the support structure, or by the faceplate, for bridging only the corner areas of the support structure where the glass is exposed. The shielding means have a configuration effective to intercept the laser beam and shield the glass from the destructive effects of the laser beam. A process for use of the shielding means in manufacture is also disclosed.

REFERENCES:
patent: 4695761 (1987-09-01), Fendley
patent: 4778427 (1988-10-01), Strauss

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