Patent Number: 6,169,588

Title: Panel for a color cathode ray tube

Abstract: In a panel for a color cathode ray tube, an at least 10% portion in a width direction of a seal edge surface of the panel is a roughened surface which satisfies: where R.sub.z represents an average depth of a concave/convex portion formed in the seal edge surface and S.sub.m represents an average period of adjacent concave or convex portions, whereby the production of flaws and the deposition of stains in the seal edge surface is prevented.

Inventors: Wakatsuki; Hiroshi (Yokohama, JP), Mizukami; Masaki (Funabashi, JP)

Assignee: Asahi Glass Company Ltd.

International Classification: C03C 19/00 (20060101); H01J 29/86 (20060101); H01J 9/26 (20060101); H04N 5/72 (20060101); H04N 005/72 ()

Expiration Date: 01/02/2018