KR950004348A

KR950004348A - Electron gun for color cathode ray tube

Info

Publication number: KR950004348A
Application number: KR1019930014190A
Authority: KR
Inventors: 김유선
Original assignee: 박경팔; 삼성전관 주식회사
Priority date: 1993-07-26
Filing date: 1993-07-26
Publication date: 1995-02-17
Also published as: KR100265779B1

Abstract

본 고안은 메인렌즈를 형성하는 전극의 형상이 개선된 칼라음극선관용 전자총에 관한 것이다. 본 고안은 전자를 방출하는 캐소오드의 전방으로 각각 다수의 전자빔 통과공이 형성된 제어전극, 스크린전극, 포커스 전극, 그리고 최종 가속전극이 차례로 배열되는 칼라음극선관용 전자총에 있어서, 메인렌즈(B)를 형성하는 포커스 전극의 전자빔 출사면(51)과 최종 가속전극의 전자빔 입사면(71)을 각각 오목하게 형성하여 메인렌즈를 형성하는 전위선과 유사한 형상으로 형성되도록 한 것이다. 본 고안에 의한 칼라 음극선관용 전자총은 대구경을 형성하기 위한 다수의 전극이 요구되지 않으며 포커스 및 컨버젼스 특성이 향상되고 고해상도를 실현할 수 있다.The present invention relates to an electron gun for a color cathode ray tube with an improved shape of an electrode forming a main lens. The present invention forms a main lens (B) in an electron gun for a color cathode ray tube in which a control electrode, a screen electrode, a focus electrode, and a final acceleration electrode, each of which has a plurality of electron beam passing holes formed in front of a cathode that emits electrons, are sequentially arranged. The electron beam exit surface 51 of the focus electrode and the electron beam entrance surface 71 of the final acceleration electrode are respectively concave to form a shape similar to the potential line forming the main lens. The electron gun for the color cathode ray tube according to the present invention does not require a large number of electrodes for forming a large diameter, and the focus and convergence characteristics are improved and high resolution can be realized.

Description

Electron gun for color cathode ray tube

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래 칼라음극선관용 전자총의 측단면도, 제2도는 제1도에 도시된 전자총에 있어서 형성되는 메인렌즈를 도시한 도면, 제3도는 본 고안에 의해 칼라음극선관용 전자총의 측단면도, 제4도는 제3도에 도시된 전자총에 있어서 형성되는 메인렌즈를 도시한 도면.1 is a side cross-sectional view of a conventional electron gun for color cathode ray tubes, FIG. 2 is a view showing a main lens formed in the electron gun shown in FIG. 1, and FIG. 3 is a side cross-sectional view of an electron gun for color cathode ray tubes according to the present invention, and FIG. Fig. 1 shows a main lens formed in the electron gun shown in Fig. 3;

Claims

For a color cathode ray tube for forming a main lens between the focus electrode and the final accelerating electrode, the control electrode, the screen electrode, the focus electrode, and the final acceleration electrode, each of which has a plurality of electron beam through holes formed in front of the cathode emitting hot electrons, are sequentially arranged. In the electron gun, the focus electrode 50 has an electron beam exit surface 51 formed concave in a hemispherical shape, and the final acceleration electrode 70 is concave and symmetrical with the electron beam exit surface 51 of the focus electrode. The electron gun for a color cathode ray tube characterized by including the formed electron beam incident surface 71.

The method of claim 1, wherein the electron beam exit surface 51 of the focus electrode and the electron beam incident surface 71 of the final acceleration electrode are formed in a shape corresponding to the lens potential line forming the main lens (B). Electron gun for color cathode ray tube.

※ Note: The disclosure is based on the initial application.