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:
Mar. 08, 1994
Filed:
Jun. 03, 1992
Applicant:
Inventor:
Kouji Nakamura, Nagaokakyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
3134 / ; 220 / ; 313377 ;
Abstract
A CRT having a glass faceplate for forming an image display surface and a metal funnel connected to a peripheral part of the faceplate and forming a side wall. The glass faceplate has a phosphor screen coated on the inside surface and a metal film covering the phosphor screen. A high voltage of 25 KV is applied to the metal film, while the metal funnel is grounded. An insulating layer covers adjacent inside areas of the funnel and faceplate, thereby increasing the distance between the metal film and exposed surfaces of the funnel and preventing creeping discharges.