Black matrix color picture tube

Details Black matrix color picture tube Black matrix color picture tube

1988-08-31

1992-01-14

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Screen

313473, 313479, 313474, 358252, 430 25, H01J 2910

Patent

active

050813943

ABSTRACT:
A black matrix color picture tube has a phosphor layer and black matrix layer formed on the inner surface of the faceplate. A layer of glass having a low softening point is provided between the phosphor layer and the inner surface of the faceplate and between the black matrix layer and the inner surface of the faceplate. The softening point of the glass is below the temperature at which the tube is subjected during a frit baking step employed in the fabrication of the tube. For example, a borophosphate glass is used as the layer of glass having a low softening point.

REFERENCES:
patent: 3362804 (1968-01-01), Hamilton
patent: 4681824 (1987-07-01), Tomita
patent: 4857429 (1989-08-01), Hayashi et al.

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