The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 1997
Filed:
Sep. 09, 1996
Thomas J Swirbel, Davie, FL (US);
Patrick M Dunn, Coral Springs, FL (US);
Joaquin Barreto, Coral Springs, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A color filter for a liquid crystal display is made by depositing a layer (22) of colored dye in a pattern on a transparent substrate (20). The pattern is in pixel format, covering most of the substrate surface and leaving portions (23) of the surface between the pixels uncovered. A layer of silver halide (25) covers both the colored dye pixels and the exposed portions of the substrate surface. The silver halide layer is treated by exposing it to light so that those portions of the silver halide layer that lie directly over the colored dye pattern become transparent and those portions of the silver halide layer that lie between the pixels become black, blocking any transmitted light.