Method of fabricating a color-selection structure for a CRT

Details Method of fabricating a color-selection structure for a CRT Method of fabricating a color-selection structure for a CRT

1981-04-08

1982-07-27

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

29 2515, 29 2518, 156640, 156644, 156652, 1566611, 313403, 313355, 430 23, 430312, 430313, 430318, B44C 122, C03C 1500, C03C 2506, C23F 102

Patent

active

043415911

ABSTRACT:
Method comprises providing a blank laminate consisting essentially of a positive-acting photosolubilizable central layer, first and second etchable metal layers adhered to opposite sides of the central layer and first and second etch-resistant stencils contacting the outer major surfaces of the first and second metal layers. The stencils have different, related open areas therethrough which leave selected portions of the metal layers unprotected. The unprotected portions of the first and second metal layers are etched through, thereby producing first and second openings in the metal layers. Then the central layer is exposed to actinic light through the first and/or second openings, thereby solubilizing selected portions of the central layer, which solubilized portions are then removed.

REFERENCES:
patent: 3778900 (1973-12-01), Haining et al.
patent: 4069923 (1978-01-01), van Esdonk
patent: 4107569 (1978-08-01), Ronde
patent: 4164059 (1979-08-01), van Esdonk
patent: 4188562 (1980-02-01), van Oostrum
patent: 4222159 (1980-09-01), Koorneef
patent: 4240869 (1980-12-01), Diepers

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