Low-cost, self-polished color CRT flat faceplate

Details Low-cost, self-polished color CRT flat faceplate Low-cost, self-polished color CRT flat faceplate

1988-06-24

1989-10-24

Wieder, Kenneth

Electric lamp and discharge devices

Cathode ray tube

Envelope

313408, 313466, 220 21A, H01J 2986

Patent

active

048764809

ABSTRACT:
The use of a flat faceplate comprised of self-polished float glass substantially reduces the cost of a cathode ray tube incorporating a flat tensioned shadow mask while affording a high degree of video image acuity. The float glass flat faceplate does not require polishing and acid etching to provide a high degree of smoothness in its inner and outer surfaces and, in combination with a flat tensioned shadow mask mounted to the flat faceplate, offers a low cost, easily manufactured and assembled color CRT front assembly.

REFERENCES:
patent: 3615328 (1971-10-01), Coleman
patent: 4432464 (1984-02-01), Seats et al.
patent: 4471262 (1984-09-01), Tamura et al.
patent: 4651051 (1987-03-01), Bloom et al.
patent: 4671814 (1987-06-01), Aratani et al.
patent: 4686415 (1987-08-01), Strauss
patent: 4710670 (1987-12-01), Daugherty et al.

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