EP1294009A3 - Electron gun for color cathode ray tube - Google Patents

Electron gun for color cathode ray tube Download PDF

Info

Publication number
EP1294009A3
EP1294009A3 EP02254610A EP02254610A EP1294009A3 EP 1294009 A3 EP1294009 A3 EP 1294009A3 EP 02254610 A EP02254610 A EP 02254610A EP 02254610 A EP02254610 A EP 02254610A EP 1294009 A3 EP1294009 A3 EP 1294009A3
Authority
EP
European Patent Office
Prior art keywords
electron gun
ray tube
cathode ray
color cathode
electrodes
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Withdrawn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
EP02254610A
Other languages
German (de)
French (fr)
Other versions
EP1294009A2 (en
Inventor
Youn Jin Migwang Apt. 101-413 Kim
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.)
LG Philips Displays Korea Co Ltd
Original Assignee
LG Philips Displays Korea Co Ltd
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 LG Philips Displays Korea Co Ltd filed Critical LG Philips Displays Korea Co Ltd
Publication of EP1294009A2 publication Critical patent/EP1294009A2/en
Publication of EP1294009A3 publication Critical patent/EP1294009A3/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Withdrawn legal-status Critical Current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
    • 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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/56—Correction of beam optics
    • H01J2229/568—Correction of beam optics using supplementary correction devices
    • H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
    • H01J2229/5687—Auxiliary coils
    • H01J2229/5688—Velocity modulation

Landscapes

  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

The present invention discloses an electron gun for a color cathode ray tube. In order to efficiently penetrate a speed modulation magnetic field of a velocity modulation coil, at least two focus electrodes of main electrodes receiving a fixed focus voltage are arranged in a row in the electron gun. When a sum of lengths of the focus electrodes is 'L' and a sum of intervals of the electrodes is 'g', '(g×100)/L = 5∼30(%)' is satisfied.
EP02254610A 2001-09-14 2002-07-01 Electron gun for color cathode ray tube Withdrawn EP1294009A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2001056933 2001-09-14
KR10-2001-0056933A KR100426569B1 (en) 2001-09-14 2001-09-14 Electron gun for CRT

Publications (2)

Publication Number Publication Date
EP1294009A2 EP1294009A2 (en) 2003-03-19
EP1294009A3 true EP1294009A3 (en) 2004-05-06

Family

ID=19714302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02254610A Withdrawn EP1294009A3 (en) 2001-09-14 2002-07-01 Electron gun for color cathode ray tube

Country Status (4)

Country Link
EP (1) EP1294009A3 (en)
JP (2) JP2003092071A (en)
KR (1) KR100426569B1 (en)
CN (1) CN1206695C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728858A (en) * 1986-02-14 1988-03-01 Kabushiki Kaisha Toshiba Color cathode ray tube apparatus
US6031326A (en) * 1997-04-01 2000-02-29 Hitachi, Ltd. Electron gun with electrode supports

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69724942D1 (en) * 1997-07-04 2003-10-23 Thomson Tubes & Displays Color picture tube with an in-line electron gun
JPH11135031A (en) * 1997-10-30 1999-05-21 Hitachi Ltd Color cathode-ray tube
KR100339349B1 (en) * 1999-08-07 2002-06-03 구자홍 electron gun in color cathode ray tube
KR100728190B1 (en) * 2001-01-17 2007-06-13 삼성에스디아이 주식회사 Electron gun for cathode ray tube
KR100778497B1 (en) * 2001-05-15 2007-11-22 삼성에스디아이 주식회사 Electron gun for cathode ray tube

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728858A (en) * 1986-02-14 1988-03-01 Kabushiki Kaisha Toshiba Color cathode ray tube apparatus
US6031326A (en) * 1997-04-01 2000-02-29 Hitachi, Ltd. Electron gun with electrode supports

Also Published As

Publication number Publication date
JP2003092071A (en) 2003-03-28
KR100426569B1 (en) 2004-04-08
CN1206695C (en) 2005-06-15
KR20030023826A (en) 2003-03-20
JP2005129544A (en) 2005-05-19
EP1294009A2 (en) 2003-03-19
CN1405830A (en) 2003-03-26

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