EP0237005A3 - Cathode ray tube for color display - Google Patents

Cathode ray tube for color display Download PDF

Info

Publication number
EP0237005A3
EP0237005A3 EP87103329A EP87103329A EP0237005A3 EP 0237005 A3 EP0237005 A3 EP 0237005A3 EP 87103329 A EP87103329 A EP 87103329A EP 87103329 A EP87103329 A EP 87103329A EP 0237005 A3 EP0237005 A3 EP 0237005A3
Authority
EP
European Patent Office
Prior art keywords
electrode
ray tube
cathode ray
color display
emitter
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Withdrawn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
EP87103329A
Other languages
German (de)
French (fr)
Other versions
EP0237005A2 (en
Inventor
Hiroshi Suzuki
Koichi Sugahara
Hidekuni Fujisawa.
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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
Priority claimed from JP5291786A external-priority patent/JPS62211836A/en
Priority claimed from JP24456286A external-priority patent/JPS6398941A/en
Application filed by Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Publication of EP0237005A2 publication Critical patent/EP0237005A2/en
Publication of EP0237005A3 publication Critical patent/EP0237005A3/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Withdrawn legal-status Critical Current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
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/503—Three or more guns, the axes of which lay in a common plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4858—Aperture shape as viewed along beam axis parallelogram
    • H01J2229/4865—Aperture shape as viewed along beam axis parallelogram rectangle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4872—Aperture shape as viewed along beam axis circular

Abstract

An electron gun has a G₂ electrode having a horizontally positioned oblong groove thereon and three aperturs for passing three electron beams, which are disposed on a bottom of said groove, and intensity of an electric field on the axis of each electron gun between the G₂ electrode (12) and a G₃ electrode, diameters of respective apertures of a G₁ electrode (11), the G₂ electrode (12) and the G₃ electrode (13), distance interval between an emitter and the G₁ electrode (11), between the emitter and the G₂ electrode (12) and between the G₁ electrode (11) and the G₂ (12) are selected in a predetermined relation, and thereby a genera­ tion of moire image interference fringes are prevented.
EP87103329A 1986-03-11 1987-03-09 Cathode ray tube for color display Withdrawn EP0237005A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP5291786A JPS62211836A (en) 1986-03-11 1986-03-11 Color picture tube device
JP52917/86 1986-03-11
JP24456286A JPS6398941A (en) 1986-10-15 1986-10-15 Color picture tube device
JP244562/86 1986-10-15

Publications (2)

Publication Number Publication Date
EP0237005A2 EP0237005A2 (en) 1987-09-16
EP0237005A3 true EP0237005A3 (en) 1988-10-12

Family

ID=26393582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103329A Withdrawn EP0237005A3 (en) 1986-03-11 1987-03-09 Cathode ray tube for color display

Country Status (1)

Country Link
EP (1) EP0237005A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR910007654Y1 (en) * 1988-11-02 1991-09-30 삼성전관 주식회사 Electron gun of multi-step focusing crt
FR2644628B1 (en) * 1989-03-17 1996-10-04 Videocolor FOCUSING GRID FOR ONLINE ELECTRON CANON FOR COLORED TELEVISION TUBE AND ONLINE ELECTRON CANON USING SUCH A GRID
JP3053827B2 (en) * 1990-02-08 2000-06-19 株式会社日立製作所 Electron gun and cathode ray tube
KR970008566B1 (en) * 1994-07-07 1997-05-27 엘지전자 주식회사 Color cathode-ray tube of electron gun
DE69603813T2 (en) * 1995-05-02 2000-02-24 Koninkl Philips Electronics Nv COLOR CATHODE RAY TUBE
KR100418934B1 (en) * 2002-02-28 2004-02-14 엘지.필립스디스플레이(주) Gun for Color CRT

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020092A (en) * 1978-04-12 1979-11-07 Rca Corp High potential, low magnification electron gun
JPS5519730A (en) * 1978-07-27 1980-02-12 Matsushita Electronics Corp Electron gun
FR2437062A1 (en) * 1978-09-25 1980-04-18 Rca Corp IMPROVEMENTS ON ELECTRONIC GUNS, ESPECIALLY FOR TELEVISION RECEIVERS
EP0111872A1 (en) * 1982-12-16 1984-06-27 Matsushita Electronics Corporation Cathode ray tube apparatus
EP0117475A1 (en) * 1983-02-14 1984-09-05 Matsushita Electronics Corporation Cathode ray tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020092A (en) * 1978-04-12 1979-11-07 Rca Corp High potential, low magnification electron gun
JPS5519730A (en) * 1978-07-27 1980-02-12 Matsushita Electronics Corp Electron gun
FR2437062A1 (en) * 1978-09-25 1980-04-18 Rca Corp IMPROVEMENTS ON ELECTRONIC GUNS, ESPECIALLY FOR TELEVISION RECEIVERS
EP0111872A1 (en) * 1982-12-16 1984-06-27 Matsushita Electronics Corporation Cathode ray tube apparatus
EP0117475A1 (en) * 1983-02-14 1984-09-05 Matsushita Electronics Corporation Cathode ray tube

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 48 (E-6)[530], 12th April 1980, page 107 E 6; & JP-A-55 019 730 (MATSUSHITA DENSHI KOGYO K.K.) 12-02-1980 *

Also Published As

Publication number Publication date
EP0237005A2 (en) 1987-09-16

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Effective date: 19890413

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FUJISAWA. HIDEKUNI

Inventor name: SUGAHARA, KOICHI

Inventor name: SUZUKI, HIROSHI