JPS57138750A - Electron gun for cathode-ray tube - Google Patents

Electron gun for cathode-ray tube

Info

Publication number
JPS57138750A
JPS57138750A JP2427481A JP2427481A JPS57138750A JP S57138750 A JPS57138750 A JP S57138750A JP 2427481 A JP2427481 A JP 2427481A JP 2427481 A JP2427481 A JP 2427481A JP S57138750 A JPS57138750 A JP S57138750A
Authority
JP
Japan
Prior art keywords
electrode
electron beam
holes
beam passing
locate
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
JP2427481A
Other languages
Japanese (ja)
Inventor
Noboru Toyama
Hideo Suzuki
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 JP2427481A priority Critical patent/JPS57138750A/en
Publication of JPS57138750A publication Critical patent/JPS57138750A/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
    • H01J29/485—Construction of the gun or of parts thereof

Abstract

PURPOSE:To improve assembly efficiency by setting reference holes for assembling sufficiently apart from electron beam passing holes at a part or the whole of an electrode of a electron gun, and inserting mandrels into the reference holes to locate an electrode. CONSTITUTION:Reference holes for assembly 4a, 4b are set in the top surface of an electrode 2 formed electron beam passing holes 3b, 3c, where gives practically no effect on an electron beam focusing electric field sufficiently apart from the electron beam passing holes. Those reference holes are set at a part or the whole of the electrode to be assembled. After mandrels are inserted into the reference holes 4a, 4b to locate the electrode, bead welding is conducted. Therefore, different from the ordinary process directly inserting mandrels into the electron beam passing holes to locate the electrode, this process prevents the occurrence of burrs in the circumference of the electron beam passing holes and can improve assembly efficiency.
JP2427481A 1981-02-23 1981-02-23 Electron gun for cathode-ray tube Pending JPS57138750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2427481A JPS57138750A (en) 1981-02-23 1981-02-23 Electron gun for cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2427481A JPS57138750A (en) 1981-02-23 1981-02-23 Electron gun for cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS57138750A true JPS57138750A (en) 1982-08-27

Family

ID=12133628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2427481A Pending JPS57138750A (en) 1981-02-23 1981-02-23 Electron gun for cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS57138750A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030018376A (en) * 2001-08-28 2003-03-06 엘지.필립스디스플레이(주) Electron gun of Cathode Ray Tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030018376A (en) * 2001-08-28 2003-03-06 엘지.필립스디스플레이(주) Electron gun of Cathode Ray Tube

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