KR950006905A - Oxide cathode of electron gun for cathode ray tube - Google Patents

Oxide cathode of electron gun for cathode ray tube Download PDF

Info

Publication number
KR950006905A
KR950006905A KR1019930016921A KR930016921A KR950006905A KR 950006905 A KR950006905 A KR 950006905A KR 1019930016921 A KR1019930016921 A KR 1019930016921A KR 930016921 A KR930016921 A KR 930016921A KR 950006905 A KR950006905 A KR 950006905A
Authority
KR
South Korea
Prior art keywords
cathode
oxide
metal
electron gun
ray tube
Prior art date
Application number
KR1019930016921A
Other languages
Korean (ko)
Inventor
최윤준
Original Assignee
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대우전자 주식회사 filed Critical 대우전자 주식회사
Priority to KR1019930016921A priority Critical patent/KR950006905A/en
Publication of KR950006905A publication Critical patent/KR950006905A/en

Links

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

본 발명음 음극선관용 전자총의 산화물 음극에 관한 것으로, 텔레비젼의 음극선관용 전자총의 산화물음극에서 베이스메탈과 산화물층사이에 Ni과 같은 내열성 금속으로 된 금속요철층을 형성하므로써 상기 베이스메탈 내부에 함침된 환원성 금속과 산화물층의 반응에 의하여 생성되는 산화물 또는 복합산화물의 중간층에 의한 베이스메탈로부터의 환원성금속의 공급이 방해 받은 것을 방지할 수 있도록 하고, 큰 전기전도도와 열전도도를 갖는 내열성 금속의 특성을 이용하여 종래의 산화물음극에서 중간층형성에 의한 저항의 증가를 방지하여 음극의 자기발열에 의한 온도상승을 막아 고전류밀도에서도 전자의 방출을 안정화 시킬 수 있도록 하며, 음극의 수명단축을 방지할 수 있도록 하고, 베이스메탈과 산화물층 표면사이의 온도차를 감소시켜 히터의 소모전력을 줄여 수명을 연장시킬 수 있도록 한 것이다.The present invention relates to an oxide cathode of an electron gun for a cathode ray tube, wherein an oxide cathode of an electron gun for a cathode ray tube of a television is formed between a base metal and an oxide layer to form a metal concavo-convex layer of a heat-resistant metal such as Ni, thereby reducing the impregnation in the base metal. It is possible to prevent the supply of the reducing metal from the base metal by the intermediate layer of the oxide or the composite oxide produced by the reaction of the metal and the oxide layer, and to use the characteristics of the heat-resistant metal having a large electrical conductivity and thermal conductivity. By preventing the increase of resistance by the formation of the intermediate layer in the conventional oxide cathode to prevent the temperature rise due to self-heating of the cathode to stabilize the emission of electrons even at high current density, to prevent the shortening of the lifetime of the cathode, By reducing the temperature difference between the base metal and the oxide layer surface, It is to reduce the power consumption of the rotor to extend its life.

Description

음극선관용 전자총의 산화물 음극Oxide cathode of electron gun for cathode ray tube

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

제1도는 전자총의 산화물음극의 설치상태 단면도.1 is a cross-sectional view of an installation state of an oxide cathode of an electron gun.

제2도는 종래 산화물음극의 확대단면도 및 그 등가회로도.2 is an enlarged cross-sectional view of a conventional oxide cathode and an equivalent circuit diagram thereof.

제3도는 본 발명에 따른 산화물음극의 확대단면도이다.3 is an enlarged cross-sectional view of an oxide cathode according to the present invention.

Claims (3)

베이스메탈(32)과 산화물층(34) 사이에 내열성 금속으로 된 금속요철층(36)을 형성하여된 것을 특징으로 하는 음극선관용 전자총의 산화물 음극.An oxide cathode of an electron gun for a cathode ray tube, characterized in that a metal uneven layer 36 made of a heat resistant metal is formed between a base metal 32 and an oxide layer 34. 제1항에 있어서, 금속요철층(36)은 10∼50㎛의 두께로 형성시켜 된 것을 특징으로 하는 음극선관용 전자총의 산화물 음극.The oxide cathode of the electron gun for cathode ray tubes according to claim 1, wherein the metal uneven layer (36) is formed to a thickness of 10 to 50 mu m. 제1항에 있어서, 금속요철층(36)은 포토게지스트와 마스크를 이용한 사진 현상법 또는, 건식 또는 습식의 에칭법, 또는 도금법, 무전해조금법, 또는 스퍼터링이나 증기증착법의 박막증착법에 의해 제조된 것을 특징으로 하는 음극선관용 전자총의 산화물음극.The metal concave-convex layer 36 is formed by a photo development method using a photogauge and a mask, a dry or wet etching method, or a plating method, an electroless plating method, or a thin film deposition method of sputtering or vapor deposition. Oxide cathode of electron gun for cathode ray tube, characterized in that manufactured. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930016921A 1993-08-28 1993-08-28 Oxide cathode of electron gun for cathode ray tube KR950006905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930016921A KR950006905A (en) 1993-08-28 1993-08-28 Oxide cathode of electron gun for cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930016921A KR950006905A (en) 1993-08-28 1993-08-28 Oxide cathode of electron gun for cathode ray tube

Publications (1)

Publication Number Publication Date
KR950006905A true KR950006905A (en) 1995-03-21

Family

ID=66817812

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930016921A KR950006905A (en) 1993-08-28 1993-08-28 Oxide cathode of electron gun for cathode ray tube

Country Status (1)

Country Link
KR (1) KR950006905A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100776699B1 (en) * 2000-09-14 2007-11-16 코닌클리케 필립스 일렉트로닉스 엔.브이. Oxide cathode and cathode ray tube comprising the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100776699B1 (en) * 2000-09-14 2007-11-16 코닌클리케 필립스 일렉트로닉스 엔.브이. Oxide cathode and cathode ray tube comprising the same

Similar Documents

Publication Publication Date Title
ATE258366T1 (en) TARGET FOR X-RAY GENERATION
US3745403A (en) Direct heating cathode structure for electron tubes
KR950006905A (en) Oxide cathode of electron gun for cathode ray tube
JP2005071682A (en) Lighting system
KR890004832B1 (en) Manufacture of cathodes leated indirectly by an electric current
JP2570560Y2 (en) Electron beam evaporation source
JPH0757617A (en) Thermal electron generation source
US3376461A (en) Thermionic cathodes and high frequency electron discharge devices
KR940009306B1 (en) Cathode for electron tube
US5422536A (en) Thermionic cathode with continuous bimetallic wall having varying wall thickness and internal blackening
US2213558A (en) Emission suppression means
JPH0771362A (en) Ion thruster and manufacture of said structure
JPH0412587Y2 (en)
US3551727A (en) Thermionic converter having a low work function collector electrode
KR0142847B1 (en) Structure of impregnated cathode
KR940006919Y1 (en) Radiation type cathode structure for electron tube
KR20010092908A (en) Indirectly heated cathode assembly
KR100730108B1 (en) Electron gun applying cold cathode
KR880002987Y1 (en) A electron-gun for a c.r.t
JPH0456040A (en) Minute vacuum device
SU1034092A1 (en) Thermal electron cathode unit
KR0121238Y1 (en) Cathode of an electron gun
KR920008302B1 (en) A form strucutre of dispenser-type cathode
KR790001794B1 (en) A method of manufacture for electron tube cathode
KR920010362B1 (en) Cold cathode

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application