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:
Aug. 14, 2001
Filed:
Dec. 17, 1998
Applicant:
Inventors:
Toshimasa Ishigaki, Chiba, JP;
Masahiro Nishizawa, Mobara, JP;
Fumio Takahashi, Mobara, JP;
Tetsuo Suzuki, Mobara, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 2/910 ;
U.S. Cl.
CPC ...
H01J 2/910 ;
Abstract
A cathode ray tube has a metal film formed to cover phosphor areas of a phosphor layer on an inner wall of a panel portion of an envelope. The metal film is formed over an organic film resin applied to the phosphor layer, the organic film resin is baked and removed so that the metal film covers the phosphor layer, and cracks are formed in the metal film in a greater number on side portions of the phosphor areas than on an upper portion of the phosphor areas. This construction results in a cathode ray tube with a metal film that can prevent a blister phenomenon and a reduction in brightness.