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.

Date of Patent:
Sep. 02, 1980

Filed:

Nov. 09, 1978
Applicant:
Inventors:

Masaki Kobayakawa, Kagoshima, JP;

Toshio Okada, Kagoshima, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313496 ; 313269 ;
Abstract

In a fluorescent display panel comprising a grid member comprising, in turn, a pair of grid leads extended integrally from a grid frame to which a grid is attached, each grid lead is fixed to a substrate of the panel. When driven in a time division fashion, the panel produces audible noises disagreeable to the ear. In order to reduce the noises, at least one of the grid lead pair is deformed perpendicularly of the grid at its portion between the grid frame and the portion at which the grid lead is fixed to the substrate. The deformation may be an indent directed either away or towards the substrate, with the thickness of the grid lead rendered at the position of the indent. The deformation may alternatively be a bend, with the thickness kept uniform. Also in the latter case, an indent is formed in the grid lead.


Find Patent Forward Citations

Kobayakawa, Masaki. (1980). Fluorescent display panel comprising a grid lead having an indent (U.S. Patent No. 4220894). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4220894

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…