KR970030153A

KR970030153A - Third grid electrode of electron gun for color cathode ray tube

Info

Publication number: KR970030153A
Application number: KR1019950043488A
Authority: KR
Inventors: 이경섭
Original assignee: 구자홍; 엘지전자 주식회사
Priority date: 1995-11-24
Filing date: 1995-11-24
Publication date: 1997-06-26

Abstract

본 발명은 칼라 음극선관에 사용되는 전자총에 관한 것으로써 좀더 구체적으로는 집속전극역할을 하는 제3그리드전극의 형상을 개선하여 전체의 길이를 정확하게 유지함과 동시에 비디그라스와의 용접작업시 변형이 최소화될 수 있도록 한 것이다.The present invention relates to an electron gun used for a color cathode ray tube, and more particularly, to improve the shape of a third grid electrode serving as a focusing electrode, to accurately maintain the overall length, and to minimize deformation during welding with vidi glass. It would be possible.

이를 위해, 전자빔(3)이 방사되는 음극(8)과, 상기 음극에서 방사된 전자빔을 제어하는 제어전극 및 가속전극과, 가속된 전자빔을 형광면이 도포되어 있는 스크린에 촛점이 맺히도록 적절히 집속 및 가속시키는 다수개의 전극을 관축방향으로 순차 배열하여서 된 전자총에 있어서, 제3 그리드전극을 구성하는 캡형상부(24)와 컵형상부(23)중 일측의 전극을 구성하는 컵형상부(23)에 전자빔 통과공에서 인라인방향과 평행한 부분의 관축방향으로 연장부(23a)를 형성하여 상기 연장부에 외형절곡부(23b)를 형성하고 나머지 한 전극의 일부분에는 전자빔 통과공에서 인라인방향과 평행한 부분의 관축방향으로 상기 연장부에 내삽되어 용접고정되는 연장부(24a)를 형성하여서 된 것이다.To this end, the cathode 8 to which the electron beam 3 is emitted, the control electrode and the acceleration electrode to control the electron beam emitted from the cathode, and the accelerated electron beam are properly focused and focused so as to focus on a screen coated with a fluorescent surface. In the electron gun in which a plurality of electrodes to be accelerated are sequentially arranged in the tube axis direction, a cup-shaped portion 23 constituting an electrode on one side of the cap-shaped portion 24 and the cup-shaped portion 23 constituting the third grid electrode. An extension portion 23a is formed in the tube axis direction of the portion parallel to the inline direction in the electron beam through hole to form an outer bent portion 23b in the extension portion, and a part of the other electrode is parallel to the inline direction in the electron beam through hole. The extension part 24a which is inserted in the said extension part in the tube axial direction of a part, and is welded is formed.

Description

Third grid electrode of electron gun for color cathode ray tube

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제5도는 본 발명의 일 실시예를 나타낸 정면도.5 is a front view showing an embodiment of the present invention.

제6도는 본 발명의 다른 실시예를 나타낸 정면도.6 is a front view showing another embodiment of the present invention.

Claims

In the tubular direction, a cathode in which an electron beam is emitted, a control electrode and an acceleration electrode for controlling the electron beam emitted from the cathode, and a plurality of electrodes for properly connecting and accelerating the accelerated electron beam to focus on a screen coated with a fluorescent surface. In the electron guns arranged sequentially, an extension portion is formed in the tube-shaped direction of the cap-shaped portion and the cup-shaped portion constituting the third grid electrode in one of the electrode portions parallel to the in-line direction in the electron beam through hole. And a third grid electrode of the electron gun for color cathode ray tube formed in a part of the other electrode, the extension part being inserted into the extension part in the tube axis direction of the part parallel to the in-line direction in the electron beam through-hole.

According to claim 1, wherein the width of the extension end of the electrode having the outer bent portion is formed smaller than the vertical width of the electron beam through hole of the electrode, the width of the beginning of the extension portion of the remaining electrode of the electron beam through hole of the electrode And the width of the extension end of the electrode is smaller than the width of the extension end of the electrode where the outer bent portion is formed.