Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

1986-07-11

1988-03-29

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313407, H01J 2907

Patent

active

047346159

ABSTRACT:
The shadow mask of a color cathode ray tube is arranged in the vicinity of a phosphor screen. The shadow mask is provided with through-holes that select the electron beams emitted from the electron guns. A layer comprising, as a filler, one or other of a metal, metal oxide, metal carbide, metal nutride, or a mixture of two or more of these, for example zirconium powder and, as a binder, one of an amorphous metal oxide compound, amorphous metal hydroxide compound or a mixture of these, for example silicon oxide, is formed on the surface of the shadow mask. This layer increases thermal radiation of the shadow mask, reduces electron scattering, and raises the residual emissivity.

REFERENCES:
patent: 3760214 (1973-09-01), Yamazaki et al.
patent: 4558252 (1985-12-01), Kanto et al.

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