Sony Corporation

Kenichi Kanehira

Koji Saita

Hisao Kume

Tomohisa Uba

Tokihiro Nishihara

Hiroharu Shirasaka

A method of manufacturing, and the structure of an improved electron beam selection electrode of a color cathode ray tube having a pair of arm members with a plurality of grid elements attached thereto and extended therebetween, and a pair of supporting members for the pair of arm members. The method comprises the steps of arranging a damper wire of predetermined length between a pair of fixing members, covering each end of the damper wire arranged on each end of the pair of fixing members with a pair of thin film tapes, respectively, welding both of the damper wire and the thin film tapes thereon to each one end of the pair of fixing members to provide a damper assembly, arranging a wire portion of the damper assembly over a surface of the plurality of the grid elements, and fixing each of the other end of the pair of fixing members to each of the pair of supporting members so as to suppress mechanical vibration of the grid elements.

Method for manufacturing an electron beam selection electrode

A supporting device for an electron beam landing position selecting mask of a color cathode ray tube having an envelope, a color phosphor screen and an electron gun is disclosed which includes a metal stud pin arranged within the envelope and a spring member attached to the electron beam landing position selecting mask, the spring member being engaged with the metal stud pin so that the electron beam selecting mask is disposed in opposed relation to the color phosphor screen, the spring member having a polygonal engaging aperture bored therethrough at its end portion with which the metal stud pin is engaged wherein the stud pin contacts with the polygonal engaging aperture at three points to thereby settle the position of the electron beam selecting mask and the inner peripheral edge of the polygonal engaging aperture and the peripheral surface of the metal stud pin are fixed together at least at one point other than the three points by welding.

Growing community of inventors

Tokyo, Japan

Kenichi Kanehira