JPS56120058A - Electron gun for picture tube - Google Patents

Electron gun for picture tube

Info

Publication number
JPS56120058A
JPS56120058A JP2275980A JP2275980A JPS56120058A JP S56120058 A JPS56120058 A JP S56120058A JP 2275980 A JP2275980 A JP 2275980A JP 2275980 A JP2275980 A JP 2275980A JP S56120058 A JPS56120058 A JP S56120058A
Authority
JP
Japan
Prior art keywords
disc
support
thermal expansion
electron gun
picture tube
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
JP2275980A
Other languages
Japanese (ja)
Inventor
Yukihiro Izumida
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2275980A priority Critical patent/JPS56120058A/en
Publication of JPS56120058A publication Critical patent/JPS56120058A/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
    • H01J29/48—Electron guns
    • H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission

Abstract

PURPOSE:To prevent a deformation of a beam disc as well as improve its revolution by forming a beam disc support with a nonmagnetic material which has a smaller coefficient of thermal expansion than the beam disc. CONSTITUTION:Several points on a fringe of a beam disc 18, which is composed of a nickel and the like as usual, are fixed by means of a spot welding 10 to a beam disc support 19, which is formed by a material with a smaller coefficient of thermal expansion than the disc, for example, a nonmagnetic nichrome. In such a case when a temperature rise due to a degassing causes the disc 18 with a large coefficient of thermal expansion to expand considerably, the support 19 is not stretched because it has a larger strength than the disc 18. As a result, the disc 18 is deformed like a broken line instead of stretching the support 19 and is stabilized. The resolution may be thus improved.
JP2275980A 1980-02-27 1980-02-27 Electron gun for picture tube Pending JPS56120058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2275980A JPS56120058A (en) 1980-02-27 1980-02-27 Electron gun for picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2275980A JPS56120058A (en) 1980-02-27 1980-02-27 Electron gun for picture tube

Publications (1)

Publication Number Publication Date
JPS56120058A true JPS56120058A (en) 1981-09-21

Family

ID=12091602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2275980A Pending JPS56120058A (en) 1980-02-27 1980-02-27 Electron gun for picture tube

Country Status (1)

Country Link
JP (1) JPS56120058A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164154U (en) * 1987-04-15 1988-10-26
US5619791A (en) * 1994-06-30 1997-04-15 Lucent Technologies Inc. Method for fabricating highly conductive vias
US5802702A (en) * 1994-06-30 1998-09-08 Lucent Technologies Inc. Method of making a device including a metallized magnetic substrate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164154U (en) * 1987-04-15 1988-10-26
US5619791A (en) * 1994-06-30 1997-04-15 Lucent Technologies Inc. Method for fabricating highly conductive vias
US5802702A (en) * 1994-06-30 1998-09-08 Lucent Technologies Inc. Method of making a device including a metallized magnetic substrate

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