JPS57141848A - Color picture tube - Google Patents

Color picture tube

Info

Publication number
JPS57141848A
JPS57141848A JP2544681A JP2544681A JPS57141848A JP S57141848 A JPS57141848 A JP S57141848A JP 2544681 A JP2544681 A JP 2544681A JP 2544681 A JP2544681 A JP 2544681A JP S57141848 A JPS57141848 A JP S57141848A
Authority
JP
Japan
Prior art keywords
deflection yoke
picture tube
color picture
magnetic
belt
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
JP2544681A
Other languages
Japanese (ja)
Other versions
JPH0319666B2 (en
Inventor
Eizaburo Hamano
Hidetoshi Yamazaki
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
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2544681A priority Critical patent/JPS57141848A/en
Publication of JPS57141848A publication Critical patent/JPS57141848A/en
Publication of JPH0319666B2 publication Critical patent/JPH0319666B2/ja
Granted 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

Abstract

PURPOSE:To improve the convergence of a color picture tube by placing at least a pair of belt-like permanent magnets within a deflection yoke, and extingushing magnetic fields developed due to the residual magnetism of annealed magnetic substances constituting the said deflection yoke. CONSTITUTION:Belt-like permanent magnets M1, M2, M3 and M4 are arranged inside a deflection yoke. The magnetization of the permanent magnet is performed so that magnetic fields developed due to the residual magnetism of annealed magnetic substances which constitute the deflection yoke, such as a magnetic core, a permalloy plate and a silicon steel plate, are extinguished. Consequently, an excellent convergence characteristic can be obtained.
JP2544681A 1981-02-25 1981-02-25 Color picture tube Granted JPS57141848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2544681A JPS57141848A (en) 1981-02-25 1981-02-25 Color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2544681A JPS57141848A (en) 1981-02-25 1981-02-25 Color picture tube

Publications (2)

Publication Number Publication Date
JPS57141848A true JPS57141848A (en) 1982-09-02
JPH0319666B2 JPH0319666B2 (en) 1991-03-15

Family

ID=12166227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2544681A Granted JPS57141848A (en) 1981-02-25 1981-02-25 Color picture tube

Country Status (1)

Country Link
JP (1) JPS57141848A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433623A (en) * 1977-07-28 1979-03-12 Toshiba Corp Color receiving tube unit of in-line type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433623A (en) * 1977-07-28 1979-03-12 Toshiba Corp Color receiving tube unit of in-line type

Also Published As

Publication number Publication date
JPH0319666B2 (en) 1991-03-15

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