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:
Jul. 27, 1999
Filed:
Dec. 22, 1995
Edward Richard Garrity, Jr, Lancaster, PA (US);
George Milton Ehemann, Jr, Lancaster, PA (US);
Thomson Consumer Electronics, Inc., Indianapolis, IN (US);
Abstract
The present invention relates to a method of electrophotographically manufacturing a phosphor screen 22 comprising a multiplicity of color-emitting screen elements arranged in color groups on an interior surface of a faceplate panel 12 of a color CRT 10. The multiplicity of screen elements is exposed to a source 35 of UV radiation to stimulate the screen elements to emission. The emission from the screen elements is utilized to determine, on a pixel-by-pixel basis, a first emission characteristic of each color group of screen elements. Then, a subsequent manufacturing step (58, 62) is performed that affects the screen elements, and the multiplicity of screen elements is re-exposed to the source of UV radiation to stimulate the screen elements to emission. The resultant emission is utilized to determine, on a pixel-by-pixel basis, a second emission characteristic from each color group of screen elements. The second emission and first emission characteristics are then compared on a pixel-by-pixel basis (60, 64).