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. 19, 1988
Filed:
Feb. 19, 1987
Applicant:
Inventors:
Masamichi Kimura, Ibaraki, JP;
Mutsuo Masuda, Kyoto, JP;
Masao Tokunaga, Takatsuki, JP;
Shigeya Ashizaki, Takatsuki, JP;
Assignee:
Matsushita Electronics Corporation, Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427 72 ; 427 64 ; 427 67 ; 427 71 ; 427 73 ; 427240 ; 427231 ; 427232 ; 427336 ;
Abstract
Making method for a phosphor layer of a small diameter cathode ray tube comprises application of a centrifugal force of above 100G in a direction parallel to the axis of a glass bulb toward its bottom panel to become a face plate, thereby forcedly making sedimentation of phosphor powder onto the inner surface of the bottom panel, and thus, by adoptation of the centrifugal force, a phosphor layer of very fine and dense configuration and uniform thickness is obtainable even using such small medium grain size of phosphor powder of under 4 .mu.m.