EP0214816A3 - Cathode ray tubes - Google Patents

Cathode ray tubes Download PDF

Info

Publication number
EP0214816A3
EP0214816A3 EP86306667A EP86306667A EP0214816A3 EP 0214816 A3 EP0214816 A3 EP 0214816A3 EP 86306667 A EP86306667 A EP 86306667A EP 86306667 A EP86306667 A EP 86306667A EP 0214816 A3 EP0214816 A3 EP 0214816A3
Authority
EP
European Patent Office
Prior art keywords
cathode ray
limiting aperture
ray tubes
aperture
ray tube
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP86306667A
Other languages
German (de)
French (fr)
Other versions
EP0214816A2 (en
Inventor
Takehiro C/O Patent Division Kakizaki
Koumei C/O Patent Division Kusuda
Koichi C/O Patent Division Furui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of EP0214816A2 publication Critical patent/EP0214816A2/en
Publication of EP0214816A3 publication Critical patent/EP0214816A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/029—Schematic arrangements for beam forming

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

In a cathode ray tube provided with a limiting aperture (LA) in an electron gun, the axial potential between the limit­ ing aperture (LA) and an electrode (SG) arranged at the rear stage of the limiting aperture (LA) is lower than a potential of the limiting aperture (LA) by several tens of volts, so that sec­ ondary electrons generated from the limiting aperture (LA) are hindered from reaching a fluorescent screen (1) or a target screen of the cathode ray tube.
EP86306667A 1985-08-29 1986-08-28 Cathode ray tubes Withdrawn EP0214816A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP190434/85 1985-08-29
JP60190434A JPS6251137A (en) 1985-08-29 1985-08-29 Cathode-ray tube

Publications (2)

Publication Number Publication Date
EP0214816A2 EP0214816A2 (en) 1987-03-18
EP0214816A3 true EP0214816A3 (en) 1988-11-23

Family

ID=16258065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86306667A Withdrawn EP0214816A3 (en) 1985-08-29 1986-08-28 Cathode ray tubes

Country Status (3)

Country Link
EP (1) EP0214816A3 (en)
JP (1) JPS6251137A (en)
KR (1) KR870002633A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8728481D0 (en) * 1987-12-04 1988-04-27 Rank Brimar Ltd Electron gun

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB467611A (en) * 1935-12-23 1937-06-21 Gen Electric Co Ltd Improvements in or relating to cathode ray tubes and apparatus comprising them

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55165554A (en) * 1979-06-11 1980-12-24 Hitachi Ltd Camera tube
JPS57128439A (en) * 1981-02-02 1982-08-10 Toshiba Corp Electron gun and cathode-ray tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB467611A (en) * 1935-12-23 1937-06-21 Gen Electric Co Ltd Improvements in or relating to cathode ray tubes and apparatus comprising them

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 5, no. 40 (E-49)[712], 17th March 1981; & JP-A-55 165 554 (HITACHI SEISAKUSHO K.K.) 24-12-1980 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 226 (E-141)[1104], 11th November 1982; & JP-A-57 128 439 (TOKYO SHIBAURA DENKI K.K.) 10-08-1982 *

Also Published As

Publication number Publication date
JPS6251137A (en) 1987-03-05
EP0214816A2 (en) 1987-03-18
KR870002633A (en) 1987-04-06

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Inventor name: FURUI, KOICHIC/O PATENT DIVISION

Inventor name: KAKIZAKI, TAKEHIROC/O PATENT DIVISION

Inventor name: KUSUDA, KOUMEIC/O PATENT DIVISION