FR2240524A1 - CRT multiple electron gun assembly in polygonal configuration - has each electron gun with several grid electrodes - Google Patents

CRT multiple electron gun assembly in polygonal configuration - has each electron gun with several grid electrodes

Info

Publication number
FR2240524A1
FR2240524A1 FR7427520A FR7427520A FR2240524A1 FR 2240524 A1 FR2240524 A1 FR 2240524A1 FR 7427520 A FR7427520 A FR 7427520A FR 7427520 A FR7427520 A FR 7427520A FR 2240524 A1 FR2240524 A1 FR 2240524A1
Authority
FR
France
Prior art keywords
electron gun
electron
grid electrodes
crt
polygonal configuration
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.)
Withdrawn
Application number
FR7427520A
Other languages
French (fr)
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
Publication of FR2240524A1 publication Critical patent/FR2240524A1/en
Withdrawn legal-status Critical Current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
    • H01J29/506—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube guns in delta or circular configuration

Landscapes

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

Abstract

Each of the electron guns forming the polygon configuration in the CRT, has a number of grid electrodes. The axes of the electron guns are mutually parallel. The axis of an electron lens nearest to the screen is not aligned with the axis of the respective electron gun. The grid electrodes may contain several combinations of electron lens distance, with specified offsetting in the electron lens system nearest to the luminescent screen. At least one grid electrode may be in a form of a hollow column, formed by combination of several grid electrodes of a number of electron guns at the same potential. The cathode and the hollow grid electrode may have a special support. The grid electrode openings for electron beam passage is provided in regions corresponding to cathodes of the polygonal configuration.
FR7427520A 1973-08-08 1974-08-08 CRT multiple electron gun assembly in polygonal configuration - has each electron gun with several grid electrodes Withdrawn FR2240524A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8842273A JPS5038462A (en) 1973-08-08 1973-08-08

Publications (1)

Publication Number Publication Date
FR2240524A1 true FR2240524A1 (en) 1975-03-07

Family

ID=13942331

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427520A Withdrawn FR2240524A1 (en) 1973-08-08 1974-08-08 CRT multiple electron gun assembly in polygonal configuration - has each electron gun with several grid electrodes

Country Status (3)

Country Link
JP (1) JPS5038462A (en)
DE (1) DE2438233A1 (en)
FR (1) FR2240524A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1574104A (en) * 1977-09-28 1980-09-03 Ibm Data processing apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793992A (en) * 1972-01-14 1973-05-02 Rca Corp CATHODIC RAY TUBE
NL7217179A (en) * 1972-12-16 1974-06-18
JPS552701B2 (en) * 1973-06-12 1980-01-22

Also Published As

Publication number Publication date
DE2438233A1 (en) 1975-02-20
JPS5038462A (en) 1975-04-09

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Legal Events

Date Code Title Description
ST Notification of lapse