KR930024064A

KR930024064A - Electron gun for colored cathode ray tube

Info

Publication number: KR930024064A
Application number: KR1019920008467A
Authority: KR
Inventors: 손완재
Original assignee: 박경팔; 삼성전관 주식회사
Priority date: 1992-05-19
Filing date: 1992-05-19
Publication date: 1993-12-21
Also published as: KR940010984B1

Abstract

본 발명은 칼라 음극선관용 전자총을 개시한다.The present invention discloses an electron gun for a color cathode ray tube.

본 고안은 전치삼극관부를 이루는 캐소오드 제어전극 및 스크린 전극과, 주렌즈계로서 제1,2 유니 포텐셜형 정전렌즈를 이루는 제1,2,3,4,5 포커스전극과, 상기 제5 포커스전극과 바이포텐셜형 정전렌즈를 이루는 최종가속전극를 구비하여 딘 칼라 음극선관용 전자총에 관한 것으로, 상기 제1,3 포커스전극의 출사측면에 횡장형의 전자빔 통과공이 형성되고, 상기 제3,5 포커스전극의 입사측면에는 종장형의 전자빔 통과공이 형성되며, 상기 제2,4 포커스 전극에는 소정의 정전압이 인가되고, 제1,5 포커스 전극에는 상기 정전압보다 높은 포커스전압이 인가되며, 상기 제3 포커스 전극에는 상기 포커스전압을 기전전압으로 하는 다이나믹 포커스전압을 인가하여 된것에 특징이 있으며, 이는 형광막에 랜딩되는 전자빔의 비점수차보정효과 및 포커스특성을 향상시킬 수 있는 이점을 가진다.The present invention provides a cathode control electrode and a screen electrode constituting the pre-triode tube portion, the first, second, third, fourth, fifth focus electrode constituting the first and second unpotential electrostatic lenses as the main lens system, and the fifth focus electrode The present invention relates to an electron gun for a dine color cathode ray tube having a final accelerating electrode forming a bipotential type electrostatic lens, wherein a horizontal electron beam through hole is formed on an emission side of the first and third focus electrodes, and the third and fifth focus electrodes are incident. An elongated electron beam through hole is formed at a side surface, a predetermined constant voltage is applied to the second and fourth focus electrodes, a focus voltage higher than the constant voltage is applied to the first and fifth focus electrodes, and the third focus electrode is disposed on the side. It is characterized by applying the dynamic focus voltage using the focus voltage as the electromotive voltage, which improves the astigmatism correction effect and the focus characteristic of the electron beam landing on the fluorescent film. An advantage that can be.

Description

Electron gun for colored cathode ray tube

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

제2도는 본 발명에 따른 칼라 음극선관의 전자총을 도시한 입단면도, 제3도는 제2도에 도시된 전자총의 각 전극들 사이에 형성되는 정전렌즈를 가시화시켜 나타낸 것으로서 (가)는 전자빔이 형광막의 중앙부로 주사될때이고, (나)는 전자빔이 형광막의 주변부로 주사될때이다.FIG. 2 is a sectional view showing an electron gun of a color cathode ray tube according to the present invention, and FIG. 3 is a view showing visualization of an electrostatic lens formed between the electrodes of the electron gun shown in FIG. (B) is when the electron beam is scanned to the periphery of the fluorescent film.

Claims

A cathode control electrode and a screen electrode forming a pre-triode, a first, a second, a third, a fourth, a fifth focusing electrode forming a first and a second universal potential electrostatic lens, and the fifth focusing electrode and a bipotential type In an electron gun for a color cathode ray tube having a final accelerating electrode constituting an electrostatic lens, horizontally elongated electron beam passing holes 14H (16 (H ')) are provided on the exit sides of the first and third focus electrodes 14 and 16, respectively. And the elongated electron beam passing holes 16H and 18 are formed on the incident side surfaces of the third and fifth focus electrodes 16 and 18, and the second and fourth focus electrodes 15 and 17 are formed. A predetermined constant voltage VS is applied, a focus voltage VF higher than the constant voltage VS is applied to the first and fifth focus electrodes 14 and 18, and the third focus electrode 16 is applied to the third focus electrode 16. An electron gun for a color cathode ray tube, characterized by applying a dynamic focus voltage (VD) having a focus voltage (VF) as a base voltage.

The electron gun for a color cathode ray tube according to claim 1, wherein the constant voltage VS is applied at the same potential as the screen electrode.

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