Shadow-mask type color cathode-ray tube

Details Shadow-mask type color cathode-ray tube Shadow-mask type color cathode-ray tube

1989-11-28

1993-06-01

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313408, 313477R, H01J 2907, H01J 2986

Patent

active

052163210

ABSTRACT:
Disclosed is a shadow-mask type color cathode-ray tube comprising a faceplate having a curved inner surface which prevents degrouping and a substantially flat outer surface. In this color cathode-ray tube, the resolution is not deteriorated in the peripheral portion and an inespensive flat material is usable as a glass plate provided with a reflection reducing coating or a touch panel attached to the outer surface of the faceplate. Since a shadow mask supported with a tension applied thereto is usable, the positional deviation of the apertures due to the expansion of the shadow mask during operation is prevented.

REFERENCES:
patent: 3777204 (1973-12-01), Robbins et al.
patent: 4631439 (1986-12-01), D'Amato et al.
patent: 4779025 (1988-10-01), Paynton et al.
patent: 4806583 (1989-02-01), Battaglia
patent: 4884006 (1989-11-01), Prazak
patent: 4893054 (1990-01-01), Kobayashi

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