JPS5795044A - Electron gun structure - Google Patents

Electron gun structure

Info

Publication number
JPS5795044A
JPS5795044A JP16956780A JP16956780A JPS5795044A JP S5795044 A JPS5795044 A JP S5795044A JP 16956780 A JP16956780 A JP 16956780A JP 16956780 A JP16956780 A JP 16956780A JP S5795044 A JPS5795044 A JP S5795044A
Authority
JP
Japan
Prior art keywords
cup
top surface
major axis
control electrode
sides
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
JP16956780A
Other languages
Japanese (ja)
Inventor
Masahisa Aoyanagi
Tetsuo Kumazawa
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 JP16956780A priority Critical patent/JPS5795044A/en
Publication of JPS5795044A publication Critical patent/JPS5795044A/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
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/503—Three or more guns, the axes of which lay in a common plane

Abstract

PURPOSE:To relieve thermal deformation of a control elecdrode in the specific direction and improve its electric characteristic, by providing slits, crossing at a right angle with the direction of the major axis, in both ends of the major axis in the top surface of a cup of the control electrode. CONSTITUTION:Three electron beam passing holes 4, 5, 6 are formed in the top surface of cup of a control electrode 7, while simultaneously slits 16, 17 crossing at a right angle with the direction of the major axis of top surface of cup are formed in both ends of the major axis. Further, reinforcing protrusive banks 18, 19 are provided in both sides of the top surface of cup parallelly to the electron beam passing holes 4, 5, 6. In this way, the same level of restiction an edge of the cup can be obtained between the central part and both sides of the top surface of the cup then expansion of the top surface of the cup of the control electrode caused by the heating of a cathode can be equalized in its central part and the both sides, and an electric characteristic of the control electrode can be also improved.
JP16956780A 1980-12-03 1980-12-03 Electron gun structure Pending JPS5795044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16956780A JPS5795044A (en) 1980-12-03 1980-12-03 Electron gun structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16956780A JPS5795044A (en) 1980-12-03 1980-12-03 Electron gun structure

Publications (1)

Publication Number Publication Date
JPS5795044A true JPS5795044A (en) 1982-06-12

Family

ID=15888855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16956780A Pending JPS5795044A (en) 1980-12-03 1980-12-03 Electron gun structure

Country Status (1)

Country Link
JP (1) JPS5795044A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0380951U (en) * 1989-12-08 1991-08-19
US5980350A (en) * 1996-03-05 1999-11-09 Sony Corporation Beam control electrode, electron gun provided with the beam control electrode, cathode-ray tube provided with the electron gun, and method of fabricating the beam control electrode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0380951U (en) * 1989-12-08 1991-08-19
US5980350A (en) * 1996-03-05 1999-11-09 Sony Corporation Beam control electrode, electron gun provided with the beam control electrode, cathode-ray tube provided with the electron gun, and method of fabricating the beam control electrode

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