JPS5652852A - Electron gun structure - Google Patents

Electron gun structure

Info

Publication number
JPS5652852A
JPS5652852A JP12689879A JP12689879A JPS5652852A JP S5652852 A JPS5652852 A JP S5652852A JP 12689879 A JP12689879 A JP 12689879A JP 12689879 A JP12689879 A JP 12689879A JP S5652852 A JPS5652852 A JP S5652852A
Authority
JP
Japan
Prior art keywords
resistor
projected
voltage
midle
grid
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
JP12689879A
Other languages
Japanese (ja)
Other versions
JPS6220660B2 (en
Inventor
Shigeo Takenaka
Eiji Kanbara
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 JP12689879A priority Critical patent/JPS5652852A/en
Publication of JPS5652852A publication Critical patent/JPS5652852A/en
Publication of JPS6220660B2 publication Critical patent/JPS6220660B2/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
    • H01J29/48—Electron guns
    • H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission

Abstract

PURPOSE:To prevent the superficial discharge by coating an insulator layer on the surface of an electrode supporting structure constituted of a resistor except the portion for projecting electrodes on which low voltage or midle voltage is applied. CONSTITUTION:An electrode supporting structure 2 is comprised of a resistor 2a where the central portion is entirely coated with an insulative material layer 2b and insulators 2c, 2d located above and below said resistor 2a. The central portion of the resistor 2a is removed of the insulative material layer 2b along entire circumference of the supporting structure 2. Cathodes 3, 4, 5 and the first and second grids 6, 7 are projected from the insulator 2d while the sixth grid 11 is projected from the insulator 2c. The third and fifth grids 8, 10 are projected from the in sulative material layer 2b while the fourth grid 9 to be applied with low or midle voltage is projected from the resistor 2a. Consequently instable charge in the proximity of low or midle voltage electrode flows through the resistor 2b into the fourth grid to prevent the discharge.
JP12689879A 1979-10-03 1979-10-03 Electron gun structure Granted JPS5652852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12689879A JPS5652852A (en) 1979-10-03 1979-10-03 Electron gun structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12689879A JPS5652852A (en) 1979-10-03 1979-10-03 Electron gun structure

Publications (2)

Publication Number Publication Date
JPS5652852A true JPS5652852A (en) 1981-05-12
JPS6220660B2 JPS6220660B2 (en) 1987-05-08

Family

ID=14946600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12689879A Granted JPS5652852A (en) 1979-10-03 1979-10-03 Electron gun structure

Country Status (1)

Country Link
JP (1) JPS5652852A (en)

Also Published As

Publication number Publication date
JPS6220660B2 (en) 1987-05-08

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