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:
Jun. 12, 1979
Filed:
Sep. 13, 1977
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
358 56 ; 358230 ; 358242 ; 315366 ; 313422 ;
Abstract
The present invention relates to a picture image display device constituted a control electrode for taking out an electron beam from a flat electron source and a display plate for emitting light in accordance with the impinging of the electron beam. The picture image display device has a control for deflecting the electron beam before it reaches the display plate, a plural number of slits are provided in an insulating substrate, on the wall surfaces of which slits are electron beam controlling electrodes.