Photodeposition of CRT screen structures using cermet IC filter
AssigneeRCA Corporation
InventorJoseph J. Hanak
Life of this patent
Estimating the term…
Abstract
Method of making a CRT screen structure includes projecting a light field through an IC filter having a tailored light transmission, through a photographic master, and incident upon a photosensitive layer. The IC filter, which adjusts the light intensity across the field, comprises a cermet layer constituted of inorganic light-absorbing metal particles in an inorganic light-transmitting medium; for example, a nickel-silica cermet.
Claims10
In a photographic method for printing a screen structure for a cathode-ray tube including projecting a light field (a) through a light-transmission filter comprising inorganic light-absorbing particles, said filter having tailored variations in light transmission for producing predetermined variations in light intensity in said light field, (b) through a photographic master, and (c) incident upon a photosensitive layer, the improvement wherein said filter comprises a cermet layer constituted of inorganic light-absorbing metal particles nonuniformly distributed in an inorganic light-transmitting medium in predetermined manner to provide said tailored variations in light transmission.
Dependencies are inferred from the claim text.