Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Screen other than for cathode-ray tube
Patent
1987-05-15
1989-02-28
Dees, Jose G.
Radiation imagery chemistry: process, composition, or product th
Radiation modifying product or process of making
Screen other than for cathode-ray tube
430145, 430165, 430191, 430293, 430321, 430330, 430394, G03F 900
Patent
active
048085014
ABSTRACT:
A color filter is formed on a support, such as a charge coupled device, by (a) forming a layer on a support with a composition comprising a positive photoresist and a dye; said dye being soluble in the solvent of said photoresist; (b) exposing predetermined portions of said layer to radiation adapted to increase the solubility of said coating in the exposed areas; (c) developing said exposed areas to form a pattern of filter elements; and (d) repeating said steps with a different color dye in said composition; wherein said dye constitutes in excess of 10% by weight, dry basis of said composition, is substantially non-absorptive in the exposure wavelength of said composition, and provides predetermined absorptive characteristics for the specified filter element and said dye possessing substantially the same polarity as said composition.
REFERENCES:
patent: 3258337 (1966-06-01), Cousins
patent: 4311773 (1982-01-01), Kaneko et al.
patent: 4377631 (1983-03-01), Toukhy et al.
patent: 4383017 (1983-05-01), Hirofumi et al.
patent: 4388387 (1983-06-01), Tsuboi
patent: 4650745 (1987-03-01), Eilbeck
Neureuther and Dill, in "Photoresist Modeling and Device Fabrication Applications", Proc. Microwave Research Symp. XVIII, New York, Apr. 1974.
Dees Jos,e G.
Polaroid Corporation, Patent Dept.
Xiarhos Louis G.
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