Monochromatic picture tube

Details Monochromatic picture tube Monochromatic picture tube

1982-04-20

1984-11-27

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Screen

313474, H01J 2910, H01J 2920

Patent

active

044853289

ABSTRACT:
A monochromatic picture tube whose faceplate has a transmittance of 17 to 23% is provided. In order to obtain the same transmittance as described above, black di-iron trioxide is coated on phosphor grains to form a phosphor screen on the faceplate. Therefore, a picture on the screen results in contrast without eyestrain.

REFERENCES:
patent: 4209567 (1980-06-01), Takahara et al.
patent: 4219587 (1980-08-01), Oba et al.
patent: 4297390 (1981-10-01), Franz et al.
patent: 4333030 (1982-06-01), Zitelli

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