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:
May. 02, 1978
Filed:
Mar. 17, 1977
Stanley Donald Stookey, Painted Post, NY (US);
Brent Merle Wedding, Corning, NY (US);
Corning Glass Works, Corning, NY (US);
Abstract
This invention relates to a method for reducing the amount of ambient light which is reflected by the phosphor located on the inside surface of a color television picture tube face plate. More particularly, the invention contemplates placing a green-absorbing optical filter in front of the red and blue phosphor areas. The filter is produced from gold-containing glass. In carrying out the preferred embodiment of the invention, an opaque mask having holes of the desired shape and in the proper pattern is placed near a CeO.sub.2 -activated, photosensitive gold-containing glass, the glass is exposed through the mask to ultra-violet radiation, and thereafter subjected to a prescribed heat treatment to yield the color filters. The phosphors are applied in dot or slot-shaped configurations in the conventional manner with the blue and red phosphors being placed over the filters and the green phosphor in the clear area.