KR970077003A - Cathode for electron emission and manufacturing method thereof - Google Patents

Cathode for electron emission and manufacturing method thereof Download PDF

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Publication number
KR970077003A
KR970077003A KR1019960015651A KR19960015651A KR970077003A KR 970077003 A KR970077003 A KR 970077003A KR 1019960015651 A KR1019960015651 A KR 1019960015651A KR 19960015651 A KR19960015651 A KR 19960015651A KR 970077003 A KR970077003 A KR 970077003A
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KR
South Korea
Prior art keywords
cathode
electron
negative electrode
spray layer
sleeve
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Application number
KR1019960015651A
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Korean (ko)
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KR100246293B1 (en
Inventor
이성률
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엄길용
오리온전기 주식회사
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Priority to KR1019960015651A priority Critical patent/KR100246293B1/en
Publication of KR970077003A publication Critical patent/KR970077003A/en
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Publication of KR100246293B1 publication Critical patent/KR100246293B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • H01J9/047—Cathodes having impregnated bodies

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

본 발명은 음극선관용 전자총에서 열전자를 방출하는 음극을 개선하는 전자방출용 음극 및 그 제조방법을 제공한다.The present invention provides an electron emission cathode for improving a cathode that emits a thermal electron in an electron gun for a cathode ray tube, and a method of manufacturing the same.

그 전자방출용 음극은, 음극 슬리브의 상면에 전자방사물질을 피착시킨 음극에 있어서; Si, Mg등의 환원제가 첨가되고 Ni을 주성분으로 하는 음극 슬리브; 상기 음극슬리브의 상면에 형성되며, Ni 및 Sc으로 된 Ni/Sc스프레이층; 그리고 그 Ni/Sc스프레이층위에 형성되며, Ba산화물을 주성분으로 하고 Ca, Sr의 산화물이 첨가된 전자방사물질층을 구비하는 것을 특징으로 한다.The cathode for electron emission is a cathode in which an electron emitting material is deposited on an upper surface of a cathode sleeve; A negative electrode sleeve containing Ni as a main component to which a reducing agent such as Si or Mg is added; A Ni / Sc spray layer formed on the upper surface of the negative electrode sleeve and composed of Ni and Sc; And an electron emissive material layer formed on the Ni / Sc spray layer and containing Ba oxide as a main component and oxide of Ca and Sr added thereto.

이에 따라, 음극선관의 고정세화, 대형화에 따른 전자방사 특성을 충족시키고 나아가 종래의 고전류밀도 특성은 유지하면서 제조공정의 소요시간을 줄여 생산성 향상에 기여하는 효과가 있다.Accordingly, it is possible to satisfy the electron emission characteristic of the cathode ray tube due to the high definition and the large size of the cathode ray tube, thereby contributing to the improvement of the productivity by reducing the time required for the manufacturing process while maintaining the conventional high current density characteristics.

Description

전자방출용 음극 및 그 제조방법Cathode for electron emission and manufacturing method thereof

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 제1도의 베이스와 전자방사물질층 사이의 계면부근의 부분확대단면도, 제3도는 본 발명에 따른 음극을 개략적으로 나타내는 예시도.FIG. 2 is a partially enlarged cross-sectional view of the vicinity of the interface between the base of FIG. 1 and the electron emissive material layer, and FIG. 3 is an illustration schematically showing a cathode according to the present invention.

Claims (5)

음극 슬리브(20)의 상면에 전사방사물질(21)을 피착시킨 음극에 있어서; Si, Mg등의 환원제가 첨가되고 Ni을 주성분으로 하는 음극 슬리브; 상기 음극슬리브이 상면에 형성되며, Ni 및 Sc으로 된 Ni/Sc 스프레이층; 그리고 그 Ni/Sc 스프레이층위에 형성되며, Ba산화물을 주성분으로 하고 Ca, Sr의 산화물이 첨가된 전자방사물질층을 구비하는 것을 특징으로 하는 전자방출용 음극.In a negative electrode to which a transfer radiation material (21) is adhered on the upper surface of a negative electrode sleeve (20); A negative electrode sleeve containing Ni as a main component to which a reducing agent such as Si or Mg is added; A Ni / Sc spray layer formed on the upper surface of the negative electrode sleeve and composed of Ni and Sc; And an electron emissive material layer formed on the Ni / Sc spray layer, the electron emissive material layer including Ba oxide as a main component and Ca and Sr oxide added thereto. 제1항에 있어서, 상기 Ni/Sc 스프레이층은 Ni 및 Sc 분말에 바인더 및 용해제를 혼합하여 스프레이된 후 가열되어 형성되는 것을 특징으로 하는 전자방출용 음극.The negative electrode for electron emission according to claim 1, wherein the Ni / Sc spray layer is formed by spraying Ni and Sc powder mixed with a binder and a dissolvent, and then heating. 제1항에 있어서, 상기 Ni/Sc 스프레이층의 두께가 10 내지 20㎛인 것을 특징으로 하는 전자방출용 음극.The cathode according to claim 1, wherein the Ni / Sc spray layer has a thickness of 10 to 20 占 퐉. 음극 슬리브의 상면에 전자방사물질을 피복시켜 음극을 제조하는 방법에 있어서; Ni 및 Sc의 분말에 바인더 및 용해제를 혼합한 현탁액을 소정의 두께로 상기 슬리브상의 상면에 도포하고 가열하여 Ni/Sc스프레이층을 형성하는 단계; 그리고 상기 Ni/Sc 스프레이층위에 Ba산화물을 주성분으로 하고 Ca 및 Sr 산화물이 첨가된 전자방사물질층을 형성하는 단계를 포함하는 것을 특징으로 하는 전자방출용 음극의 제조방법.A method for manufacturing an anode by coating an electron emitting material on an upper surface of a cathode sleeve, the method comprising: Applying a suspension of Ni and Sc powder mixed with a binder and a dissolving agent to an upper surface of the sleeve to a predetermined thickness and heating to form a Ni / Sc spray layer; And forming an electron emissive material layer containing Ba oxide as a main component and Ca and Sr oxide added on the Ni / Sc spray layer. 제4항에 있어서, 상기 전자방사물질층을 형성하는 단계가 상기 Ni/Sc 스프레이층을 형성하기 위해 가열한 후 전자방사물질을 스프레이하여 형성하는 것을 특징으로 하는 전자방출용 음극의 제조방법.The method according to claim 4, wherein the step of forming the electron emissive material layer is formed by spraying an electron-emitting material after heating to form the Ni / Sc spray layer. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960015651A 1996-05-11 1996-05-11 Cathode for emitting electrons and manufacturing method thereof KR100246293B1 (en)

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Application Number Priority Date Filing Date Title
KR1019960015651A KR100246293B1 (en) 1996-05-11 1996-05-11 Cathode for emitting electrons and manufacturing method thereof

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KR100246293B1 KR100246293B1 (en) 2000-03-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103050347A (en) * 2011-10-13 2013-04-17 中国科学院电子学研究所 Method for preparing nickel-scandium (Ni-Sc) sponge oxide cathode

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103681162A (en) * 2012-09-26 2014-03-26 中国科学院电子学研究所 Method for preparing Ni-Re sponge oxide cathode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103050347A (en) * 2011-10-13 2013-04-17 中国科学院电子学研究所 Method for preparing nickel-scandium (Ni-Sc) sponge oxide cathode

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