Plural gun color CRT with inclined index phosphor layers

Details Plural gun color CRT with inclined index phosphor layers Plural gun color CRT with inclined index phosphor layers

1996-02-01

1997-12-02

Pascal, Robert

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Plural cathode-ray tubes in the circuit

315 10, 348383, 348813, H01J 2951

Patent

active

056940033

ABSTRACT:
A color cathode-ray tube comprises a phosphor screen formed on an inner surface of a face plate and having a plurality of three-color phosphor layers. A plurality of first index phosphor layers are provided on the phosphor screen and extending in parallel to the three-color phosphor layers, and a plurality of second index phosphor layers are provided on the phosphor screen and inclined to the three-color phosphor layers at a predetermined angle. Electron guns are provided in an envelope and emit electron beams to the screen section so as to dividedly scan a plurality of regions of the screen section. Photoelectric conversion devices are provided on the envelope and detect first index signals and second index signals generated from the first and second index phosphor layers by scanning of the electron beams, respectively. Deflection devices for deflecting the electron beams are controlled by a controller in response to the detected first and second index signals.

REFERENCES:
patent: 4259687 (1981-03-01), Shinkai et al.
patent: 4792720 (1988-12-01), Takenaka et al.
patent: 5418426 (1995-05-01), Rilly
Patent Abstracts of Japan, vol. 015, No. 423 (E-1127), Oct. 28, 1991 & JP-A-03 176947 (Matsushita Electron Corp), Jul. 31, 1991.
Patent Abstracts of Japan, vol. 010, No. 285 (E-441), Sep. 27, 1986 & JP-A-61 104542 (Hitachi Ltd), May 22, 1986.

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