Radiation exposure method of manufacturing a color cathode ray t

Details Radiation exposure method of manufacturing a color cathode ray t Radiation exposure method of manufacturing a color cathode ray t

1986-02-04

1987-11-17

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

With light-absorbing matrix on faceplate

430 28, 430 29, G03C 500, H01J 9227

Patent

active

047074264

ABSTRACT:
A method for manufacturing a color cathode ray tube, and in particular, for conditioning the surface of a panel of a color cathode ray tube to prepare it for the application of a pattern of color phosphors while minimizing the effects of reflections from interfaces in the panel. The method consists of coating a reciprocity-failing photoresist layer on the inner surface of the panel, drying the layer with a stream of low dew point air, exposing the layer to actinic radiation through a patterned mask to provide insoluble polymerized areas in preselected portions of the layer, developing the layer with a developing solution to remove unpolymerized areas while leaving the polmerized areas, applying an aqueous suspension of light absorptive material to the panel to replace the developing solution with the light absorptive material, drying the light absorptive material, applying an oxidizing solution to the panel to cause the polymerized areas to become water soluble, and removing the polymerized areas and the light absorptive material before applying the phosphors.

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patent: 4041347 (1977-08-01), Deal et al.
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