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:
Nov. 27, 2001
Filed:
Jul. 30, 1999
Paul M. Drumm, San Jose, CA (US);
Bob L. Mackey, San Jose, CA (US);
Candescent Technologies Corporation, San Jose, CA (US);
Abstract
A method for creating a color filter on a display screen that allows better and more efficient adhesion of color pigment crystals to the screen display structure. In one embodiment, the present invention creates a color filter on a glass substrate having a pixel-defining structure. The present embodiment first creates a color filter material by mixing a potassium silicate solution with a color crystal pigment. The color filter material is then applied onto the interior surface of the display screen. The material is then dried. The dried color filter material is then exposed to a visible light from the exterior side of the display screen. The visible light exposes the color filter material through a photomask and through the display screen. The excess layer of color filter material is then removed, leaving behind a color filter of desired transmission wavelength such that light having similar wavelength are substantially transmitted and light of wavelengths different from said color pigment crystals are substantially filtered out by absorption.