Flat CRT having a carbon layer on an inner surface of a back pan

Details Flat CRT having a carbon layer on an inner surface of a back pan Flat CRT having a carbon layer on an inner surface of a back pan

1993-01-29

1997-08-12

Oberley, Alvin E.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313422, 313485, 315 14, H01J 3100

Patent

active

056568851

ABSTRACT:
The present invention is directed to a transmission type flat cathode ray tube in which a flat glass tube envelope (15) is formed of a triple structure having a screen panel (11), a back panel (12) and a funnel portion (14) having a neck portion (13). A carbon film (24) to which an anode voltage is applied is formed on the inner surface of the back panel 12 in an opposing relation to a phosphor screen (19) of the screen panel (11). Thus, the occurrence of a pseudo signal in the transmission type flat cathode ray tube can be avoided.

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patent: 4827185 (1989-05-01), Theil et al.
patent: 5025490 (1991-06-01), Tamura

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