Cathode ray tube having reduced doming effect

Details Cathode ray tube having reduced doming effect Cathode ray tube having reduced doming effect

1996-09-18

1998-09-29

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313403, 313407, 313408, H01J 2980

Patent

active

058149287

ABSTRACT:
A cathode ray tube has a panel portion 1 with a phosphor layer 5 formed on its inner face, a neck portion 2 accommodating an electron gun 9, a funnel portion 2 for coupling the panel portion 1 to the neck portion 2 and a color selective electrode assembly 6 having a number of electron beam passing openings arranged opposite to the phosphor layer 5 with a space therebetween. The color selective electrode assembly is installed within the panel portion 1. An electron beam reflection film of a bismuth oxide thin film 6R having a bulk density of from 4 to 9.3 g/cm.sup.3 is formed on the face of the color selective electrode assembly 6 against which the electron beams 14 emitted from the electron gun 9 collide. The cathode ray tube is capable of displaying high density and high resolution image.

REFERENCES:
patent: 4442376 (1984-04-01), Van Der Waal et al.
patent: 4983136 (1991-01-01), Okuda
patent: 5028836 (1991-07-01), Hirasawa

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