JPS5795048A - Flat cathode ray tube - Google Patents

Flat cathode ray tube

Info

Publication number
JPS5795048A
JPS5795048A JP17153780A JP17153780A JPS5795048A JP S5795048 A JPS5795048 A JP S5795048A JP 17153780 A JP17153780 A JP 17153780A JP 17153780 A JP17153780 A JP 17153780A JP S5795048 A JPS5795048 A JP S5795048A
Authority
JP
Japan
Prior art keywords
phosphor screen
deflection system
high voltage
horizontal
permanent magnets
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
JP17153780A
Other languages
Japanese (ja)
Inventor
Hitoshi Uchiyama
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP17153780A priority Critical patent/JPS5795048A/en
Publication of JPS5795048A publication Critical patent/JPS5795048A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/123—Flat display tubes
    • H01J31/124—Flat display tubes using electron beam scanning

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To omit a back electrode of high voltage and a high voltage terminal by using a static magnetic field for the first deflection system which is formed at the inner front of the phosphor screen of a flat CRT. CONSTITUTION:An electron gun 4, a horizontal and vertical deflection means 6, a target electrode 5, and a phosphor screen 2 are placed inside a flat CRT. At the same time, a pair of permanent magnets 7A and 7B, which are magnetized in the direction of their thickness respectively, are arranged on both sides of the inner front of the phosphor screen 2 so that opposite magnetic poles face each other in relation to the direction of horizontal scanning on the phosphor screen 2. The electron beam, which is emitted from the electron gun 4 and deflected by the horizontal and vertical deflection means 6 (second deflection system), is deflected toward the phosphor screen 2 by the static magnetic field of the permanent magnets 7A and 7B (first deflection system). Accordingly, a back electrode which has been so far installed to generate the electrostatic field for the first deflection system can be omitted together with a subsequently required high voltage terminal.
JP17153780A 1980-12-05 1980-12-05 Flat cathode ray tube Pending JPS5795048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17153780A JPS5795048A (en) 1980-12-05 1980-12-05 Flat cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17153780A JPS5795048A (en) 1980-12-05 1980-12-05 Flat cathode ray tube

Publications (1)

Publication Number Publication Date
JPS5795048A true JPS5795048A (en) 1982-06-12

Family

ID=15924957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17153780A Pending JPS5795048A (en) 1980-12-05 1980-12-05 Flat cathode ray tube

Country Status (1)

Country Link
JP (1) JPS5795048A (en)

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