Method of making a focusing color-selection structure for a CRT

Details Method of making a focusing color-selection structure for a CRT Method of making a focusing color-selection structure for a CRT

1983-08-04

1984-04-17

Powell, William A.

Coating processes

Nonuniform coating

Applying superposed diverse coatings or coating a coated base

291635R, 156644, 156651, 156656, 1566611, 427287, 427405, 427409, 427259, 427264, 427265, 430 23, 430316, 430318, 445 47, B05D 136, B05D 500, B44C 122, C23F 102

Patent

active

044434995

ABSTRACT:
The novel method comprises (1) producing in one major surface of a metal masking plate an array of substantially-parallel ridges separated by valleys or grooves, (2) removing metal from the other of said major surfaces in generally rectangular-shaped areas opposite the valleys and extending through the plate, (3) covering the tops of the ridges with an electrically-insulating first coating and (4) covering the first coating with an electrically-conducting second coating.

REFERENCES:
patent: 3196043 (1965-07-01), Harris et al.
patent: 3923566 (1975-12-01), Law
patent: 4059781 (1977-11-01), van Alphen et al.
patent: 4107569 (1978-08-01), Ronde
patent: 4112563 (1978-09-01), Esdonk
patent: 4121131 (1978-10-01), Esdonk et al.
patent: 4188562 (1980-02-01), Oostrum
patent: 4207656 (1980-06-01), Esdonk et al.
patent: 4222159 (1980-09-01), Koorneef

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