JPS57172636A - Color picture tube - Google Patents

Color picture tube

Info

Publication number
JPS57172636A
JPS57172636A JP19002881A JP19002881A JPS57172636A JP S57172636 A JPS57172636 A JP S57172636A JP 19002881 A JP19002881 A JP 19002881A JP 19002881 A JP19002881 A JP 19002881A JP S57172636 A JPS57172636 A JP S57172636A
Authority
JP
Japan
Prior art keywords
parts
electron
cup
bottom plate
magnetic metal
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.)
Pending
Application number
JP19002881A
Other languages
Japanese (ja)
Inventor
Akira Sato
Shoichi Maeda
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
Matsushita Electric Industrial 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 Matsushita Electronics Corp, Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electronics Corp
Priority to JP19002881A priority Critical patent/JPS57172636A/en
Publication of JPS57172636A publication Critical patent/JPS57172636A/en
Pending 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
    • H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices

Abstract

PURPOSE:To obtain an improved picture playback with little strain and color shift by providing three electron-beam discharge holes in the bottom plate of a cup-like body, and providing two magnetic metal pieces rising from the peripheries of the two side discharge-holes so that the said pieces face to one another with the center discharge hole located between them. CONSTITUTION:A cup-like non-magnetic metal body 3, which is attached to an electrode provided at the end of an in-line-type electron gun, is provided with a first and a second magnetic metal piece 9 and 10. The metal pieces 9 and 10, which surround electron-beam discharge holes (b) and (r) provided in a bottom plate 4 of the cup-like body 3, respectively, consist of circular parts 9' and 10' that are in contact with the bottom plate 4, and rising part 9'' and 10'' that are continuous with the parts 9' and 10' and rise almost perpendicularly from the peripheries of the parts 9' and 10'. In addition, the parts 9'' and 10'' face to one another in the direction of the horizontal axis, with a center electron-beam discharge hole (g) located between them. As a result, an improved picture playback with a small degree of strain and color shift can be obtained.
JP19002881A 1981-11-26 1981-11-26 Color picture tube Pending JPS57172636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19002881A JPS57172636A (en) 1981-11-26 1981-11-26 Color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19002881A JPS57172636A (en) 1981-11-26 1981-11-26 Color picture tube

Publications (1)

Publication Number Publication Date
JPS57172636A true JPS57172636A (en) 1982-10-23

Family

ID=16251165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19002881A Pending JPS57172636A (en) 1981-11-26 1981-11-26 Color picture tube

Country Status (1)

Country Link
JP (1) JPS57172636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748372A (en) * 1984-07-20 1988-05-31 U.S. Philips Corporation Color display tube
US6753644B1 (en) 1999-11-02 2004-06-22 Matsushita Electric Industrial Co., Ltd. Color cathode-ray tube and color cathode-ray tube apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136476A (en) * 1977-05-02 1978-11-29 Nec Corp Electrode constituent of electron gun for color cathode ray tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136476A (en) * 1977-05-02 1978-11-29 Nec Corp Electrode constituent of electron gun for color cathode ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748372A (en) * 1984-07-20 1988-05-31 U.S. Philips Corporation Color display tube
US6753644B1 (en) 1999-11-02 2004-06-22 Matsushita Electric Industrial Co., Ltd. Color cathode-ray tube and color cathode-ray tube apparatus

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