JPS5668082A - Color cathode-ray tube device - Google Patents

Color cathode-ray tube device

Info

Publication number
JPS5668082A
JPS5668082A JP14463279A JP14463279A JPS5668082A JP S5668082 A JPS5668082 A JP S5668082A JP 14463279 A JP14463279 A JP 14463279A JP 14463279 A JP14463279 A JP 14463279A JP S5668082 A JPS5668082 A JP S5668082A
Authority
JP
Japan
Prior art keywords
magnetic flux
getter device
generated
permanent magnet
cancelled
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
JP14463279A
Other languages
Japanese (ja)
Other versions
JPS598991B2 (en
Inventor
Takeo Fujimura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14463279A priority Critical patent/JPS598991B2/en
Publication of JPS5668082A publication Critical patent/JPS5668082A/en
Publication of JPS598991B2 publication Critical patent/JPS598991B2/en
Expired 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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • H01J29/703—Static convergence systems

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To make it possible to prevent miss convergence, by providing a permanent magnet, which generates such magnetic flux that the influence of the disturbed magnetic flux generated by the eddy current of the getter device may be cancelled practically, near the getter device. CONSTITUTION:Permanent magnet 50 is provided near getter device 9 on the outside wall of funnel 6 and is formed into a plate approximately. Permanent magnet 50 is so magnetized that the N pole may be generated in the side near getter device 9, namely, in the upper side and the S pole may be generated in the opposite side in the CRT device for TV. Consequently, magnetic flux 41 generated by permanent magnet 50 is geneated through getter device 9 from below upward. Since this magnetic flux is completely opposite to the disturbance magnetic flux generated by the eddy current of getter device 9, the disturbance magnetic flux can be almost cancelled if magnitude of magnetization is selected properly. Consequently, disadvantageous miss convergence can be prevented.
JP14463279A 1979-11-07 1979-11-07 color cathode ray tube device Expired JPS598991B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14463279A JPS598991B2 (en) 1979-11-07 1979-11-07 color cathode ray tube device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14463279A JPS598991B2 (en) 1979-11-07 1979-11-07 color cathode ray tube device

Publications (2)

Publication Number Publication Date
JPS5668082A true JPS5668082A (en) 1981-06-08
JPS598991B2 JPS598991B2 (en) 1984-02-28

Family

ID=15366557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14463279A Expired JPS598991B2 (en) 1979-11-07 1979-11-07 color cathode ray tube device

Country Status (1)

Country Link
JP (1) JPS598991B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535313A (en) * 1983-09-21 1985-08-13 U.S. Philips Corporation Electromagnetic deflection unit and color display tube provided with such a unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535313A (en) * 1983-09-21 1985-08-13 U.S. Philips Corporation Electromagnetic deflection unit and color display tube provided with such a unit

Also Published As

Publication number Publication date
JPS598991B2 (en) 1984-02-28

Similar Documents

Publication Publication Date Title
CA1299159C (en) Magnetic fastener with protective shield
ES457148A1 (en) Colour television display tube
JPS57180286A (en) In-line color picture tube device
JPS5569938A (en) Color picture tube device
JPS5668082A (en) Color cathode-ray tube device
KR830006807A (en) Deflection Yoke Device of Color Television Receiver
GB927025A (en) Improvements in protective shrouds for television picture-tube deflection coil systems
JPS5326616A (en) Deflection yoke
JPS546762A (en) Cathode-ray tube
GB427112A (en) Improvements in or relating to television and like apparatus
GB1513360A (en) Deflection yoke for colour picture tube
US3555473A (en) Convergence apparatus
JPS5767268A (en) Color picture tube
JPS56103855A (en) Deflection yoke
JPS5615530A (en) Manufacture of color picture tube
JPS55104187A (en) Television receiver
JPS57162238A (en) Manufacture device for color braun tube
US3205414A (en) Correction magnets for cathode-ray tubes and methods for magnetizing same
US3061753A (en) Indicating system comprising a cathode ray tube
GB776515A (en) Improvements in or relating to ion trap arrangements
JPS5228220A (en) Deflection yoke
JPS57141848A (en) Color picture tube
JPS6445046A (en) Cathode ray tube display
GB495757A (en) Improvements in or relating to cathode ray tubes
GB1290240A (en)