EP0388901A3 - Color cathode-ray tube apparatus - Google Patents

Color cathode-ray tube apparatus Download PDF

Info

Publication number
EP0388901A3
EP0388901A3 EP19900105263 EP90105263A EP0388901A3 EP 0388901 A3 EP0388901 A3 EP 0388901A3 EP 19900105263 EP19900105263 EP 19900105263 EP 90105263 A EP90105263 A EP 90105263A EP 0388901 A3 EP0388901 A3 EP 0388901A3
Authority
EP
European Patent Office
Prior art keywords
electron
converged
beams
axes
cross
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.)
Granted
Application number
EP19900105263
Other languages
German (de)
French (fr)
Other versions
EP0388901A2 (en
EP0388901B1 (en
Inventor
Taketoshi C/O Intellectual Property Div. Shimoma
Eiji C/O Intellectual Property Div. Kamohara
Shigeru C/O Intellectual Property Div. Sugawara
Jiro C/O Intellectual Property Div. Shimokobe
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Publication of EP0388901A2 publication Critical patent/EP0388901A2/en
Publication of EP0388901A3 publication Critical patent/EP0388901A3/en
Application granted granted Critical
Publication of EP0388901B1 publication Critical patent/EP0388901B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/4834—Electrical arrangements coupled to electrodes, e.g. potentials
    • H01J2229/4837—Electrical arrangements coupled to electrodes, e.g. potentials characterised by the potentials applied
    • H01J2229/4841—Dynamic potentials
    • 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
    • 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
    • H01J2229/4896—Aperture shape as viewed along beam axis complex and not provided for

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

In an electron gun assembly, electron (BR, BG, BB) beams emitted from cathodes (KR, KG, KB) are focused in first cross-over (CO1) and accelerated and controlled by grids (G1, G2, G3) along three axes (ZR, ZG, ZB) arranged in-line. The controlled electron beams (BR, BG, BB) are weakly converged by unipotential lenses (ELS) and are converged in a vertical plane by a common single electron lens (VL1) having a lens power which is varied in accordance with a horizontal or vertical deflection of the electron beams (BR, BG, BB). The converged elec­ tron beams (BR, BG, BB) form second cross-over on the axes (ZR, ZG, ZB) which are shifted along the axes (ZR, ZG, ZB) are diverged from the second cross-overs (ZR, ZG, ZB). The diverged electron beams (BR, BG, BB) are further focused and converged onto a screen (SCN) by a main lens (LEL).
EP90105263A 1989-03-23 1990-03-20 Color cathode-ray tube apparatus Expired - Lifetime EP0388901B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP69320/89 1989-03-23
JP6932089 1989-03-23
JP1257091A JP2825287B2 (en) 1989-03-23 1989-10-03 Color picture tube equipment
JP257091/89 1989-10-03

Publications (3)

Publication Number Publication Date
EP0388901A2 EP0388901A2 (en) 1990-09-26
EP0388901A3 true EP0388901A3 (en) 1991-08-28
EP0388901B1 EP0388901B1 (en) 1996-03-06

Family

ID=26410519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105263A Expired - Lifetime EP0388901B1 (en) 1989-03-23 1990-03-20 Color cathode-ray tube apparatus

Country Status (4)

Country Link
EP (1) EP0388901B1 (en)
JP (1) JP2825287B2 (en)
KR (1) KR930000353B1 (en)
DE (1) DE69025634T2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100337858B1 (en) * 1994-10-31 2002-10-25 삼성에스디아이 주식회사 Electron gun for color cathode ray tube
KR100319087B1 (en) * 1994-12-31 2002-08-13 삼성에스디아이 주식회사 Electron gun for color cathode ray tube
KR100377399B1 (en) * 1995-11-24 2003-06-19 삼성에스디아이 주식회사 Electron gun for color cathode ray tube
WO2003052787A2 (en) * 2001-12-17 2003-06-26 Koninklijke Philips Electronics N.V. Cathode ray tube and picture display device
KR100786874B1 (en) * 2006-11-27 2007-12-20 삼성에스디아이 주식회사 Electron gun assembly for cathode ray tube and cathode ray tube

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009410A (en) * 1972-09-26 1977-02-22 Thomson-Csf Cathode-ray tubes electron-guns
EP0104674A1 (en) * 1982-08-25 1984-04-04 Koninklijke Philips Electronics N.V. Colour display tube
US4528476A (en) * 1983-10-24 1985-07-09 Rca Corporation Cathode-ray tube having electron gun with three focus lenses
EP0231964A1 (en) * 1986-01-21 1987-08-12 Koninklijke Philips Electronics N.V. Colour display tube with reduced deflection defocussing
US4737682A (en) * 1987-07-20 1988-04-12 Rca Corporation Color picture tube having an inline electron gun with an einzel lens

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8702631A (en) * 1987-11-04 1989-06-01 Philips Nv COLOR IMAGE TUBE, DEFLECTION SYSTEM AND ELECTRON GUN.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009410A (en) * 1972-09-26 1977-02-22 Thomson-Csf Cathode-ray tubes electron-guns
EP0104674A1 (en) * 1982-08-25 1984-04-04 Koninklijke Philips Electronics N.V. Colour display tube
US4528476A (en) * 1983-10-24 1985-07-09 Rca Corporation Cathode-ray tube having electron gun with three focus lenses
EP0231964A1 (en) * 1986-01-21 1987-08-12 Koninklijke Philips Electronics N.V. Colour display tube with reduced deflection defocussing
US4737682A (en) * 1987-07-20 1988-04-12 Rca Corporation Color picture tube having an inline electron gun with an einzel lens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 244 (E-430)[2300], 22nd August 1986; JP-A-61 074 246 (TOSHIBA CORP.) 16-04-1986 *

Also Published As

Publication number Publication date
JPH0320937A (en) 1991-01-29
EP0388901A2 (en) 1990-09-26
EP0388901B1 (en) 1996-03-06
KR900015234A (en) 1990-10-26
DE69025634T2 (en) 1996-10-02
KR930000353B1 (en) 1993-01-16
DE69025634D1 (en) 1996-04-11
JP2825287B2 (en) 1998-11-18

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