Negative-working photoresist method of making rear-projection te

Details Negative-working photoresist method of making rear-projection te Negative-working photoresist method of making rear-projection te

1985-09-13

1987-03-03

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

With light-absorbing matrix on faceplate

430274, 430289, 430946, 350128, G03C 500, G03B 2160

Patent

active

046475192

ABSTRACT:
A method is shown in which a black, light-absorbing matrix is formed on the viewing surface of a rear-projection polymethyl methacrylate TV viewing screen in which there is use of a negative working photoresist composition comprising an aqueous solution of polyvinyl alcohol, a water-soluble dichromate and acetone as essentially the sole wetting agent.

REFERENCES:
patent: 3317319 (1967-05-01), Mayaud
patent: 3471294 (1969-10-01), Van der Sanden et al.
patent: 3523717 (1970-08-01), Glenn
patent: 3558310 (1971-01-01), Mayaud
patent: 3598640 (1971-10-01), Bennett
patent: 3832032 (1974-08-01), Shimada
patent: 4172219 (1979-10-01), Deml et al.
patent: 4431720 (1984-02-01), Sugarman
patent: 4525029 (1985-06-01), Inoue et al.
patent: 4556626 (1985-12-01), Spiegel

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