EP0348912A3 - Color cathode ray tube apparatus - Google Patents

Color cathode ray tube apparatus Download PDF

Info

Publication number
EP0348912A3
EP0348912A3 EP19890111701 EP89111701A EP0348912A3 EP 0348912 A3 EP0348912 A3 EP 0348912A3 EP 19890111701 EP19890111701 EP 19890111701 EP 89111701 A EP89111701 A EP 89111701A EP 0348912 A3 EP0348912 A3 EP 0348912A3
Authority
EP
European Patent Office
Prior art keywords
magnetic field
ray tube
cathode ray
color cathode
tube apparatus
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
EP19890111701
Other languages
German (de)
French (fr)
Other versions
EP0348912A2 (en
EP0348912B1 (en
Inventor
Takeshi Intellectual Property Division Fujiwara
Kiyoshi Intellectual Property Division Tokita
Masatsugu Intellectual Property Division Inoue
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
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 filed Critical Toshiba Corp
Publication of EP0348912A2 publication Critical patent/EP0348912A2/en
Publication of EP0348912A3 publication Critical patent/EP0348912A3/en
Application granted granted Critical
Publication of EP0348912B1 publication Critical patent/EP0348912B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
    • H01J29/566—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses for correcting aberration
    • 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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

Magnets (56a, 56b, 110a, 110b, 112a, 112b) for applying a pincushion type magnetic field to three electron beams emitted from an electron gun assembly (42) is arranged between the deflection device and the lens unit of the electron gun assembly. The pincushion type stationary magnetic field produced by the magnets correct deflection aberrations of the electron beams due to the magnetic field of the deflection device and improves the focusing characteristic on the periphery of a screen (46).
EP89111701A 1988-06-27 1989-06-27 Color cathode ray tube apparatus Expired - Lifetime EP0348912B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15697488 1988-06-27
JP156974/88 1988-06-27

Publications (3)

Publication Number Publication Date
EP0348912A2 EP0348912A2 (en) 1990-01-03
EP0348912A3 true EP0348912A3 (en) 1991-07-10
EP0348912B1 EP0348912B1 (en) 1997-03-05

Family

ID=15639400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111701A Expired - Lifetime EP0348912B1 (en) 1988-06-27 1989-06-27 Color cathode ray tube apparatus

Country Status (4)

Country Link
EP (1) EP0348912B1 (en)
KR (1) KR920000940B1 (en)
CN (1) CN1017483B (en)
DE (1) DE68927809T2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3034906B2 (en) * 1990-05-10 2000-04-17 株式会社東芝 Color picture tube and deflection device
WO2000028570A1 (en) * 1998-11-10 2000-05-18 Matsushita Electric Industrial Co., Ltd. Deflection yoke and color picture tube comprising the same
KR20240065673A (en) 2022-11-07 2024-05-14 서안동농업협동조합 Method for producing kimchi with increased antioxidant properties containing grains and hemp seeds and kimchi with increased antioxidant properties prepared therefrom

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199891B (en) * 1960-03-31 1965-09-02 Telefunken Patent Arrangement for the magnetic deflection of cathode rays in cathode ray tubes
DE3146441A1 (en) * 1980-12-05 1982-07-01 Naamloze Vennootschap Philips' Gloeilampenfabrieken, 5621 Eindhoven "CATHODE RADIATION TUBES WITH A DEFLECTION UNIT WITH A STRUCTURE OF PERMANENT MAGNETS THAT GENERATE A STATIC MULTIPOLARGE FOR SIMULATING A MODULATION OF THE DYNAMIC DEFLECTION FIELD"
EP0243541A2 (en) * 1986-04-29 1987-11-04 Koninklijke Philips Electronics N.V. Colour television display tube with coma correction
EP0310242A1 (en) * 1987-08-28 1989-04-05 RCA Thomson Licensing Corporation Colour display system including a self-converging deflection yoke providing raster distortion correction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101745A (en) * 1982-12-02 1984-06-12 Toshiba Corp Color picture tube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199891B (en) * 1960-03-31 1965-09-02 Telefunken Patent Arrangement for the magnetic deflection of cathode rays in cathode ray tubes
DE3146441A1 (en) * 1980-12-05 1982-07-01 Naamloze Vennootschap Philips' Gloeilampenfabrieken, 5621 Eindhoven "CATHODE RADIATION TUBES WITH A DEFLECTION UNIT WITH A STRUCTURE OF PERMANENT MAGNETS THAT GENERATE A STATIC MULTIPOLARGE FOR SIMULATING A MODULATION OF THE DYNAMIC DEFLECTION FIELD"
EP0243541A2 (en) * 1986-04-29 1987-11-04 Koninklijke Philips Electronics N.V. Colour television display tube with coma correction
EP0310242A1 (en) * 1987-08-28 1989-04-05 RCA Thomson Licensing Corporation Colour display system including a self-converging deflection yoke providing raster distortion correction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 217 (E-270)[1654], 4th October 1984; & JP-A-59 101 745 (TOSHIBA K.K.) 12-06-1984 *

Also Published As

Publication number Publication date
CN1039148A (en) 1990-01-24
DE68927809D1 (en) 1997-04-10
EP0348912A2 (en) 1990-01-03
KR920000940B1 (en) 1992-01-31
KR900000962A (en) 1990-01-31
DE68927809T2 (en) 1997-09-04
CN1017483B (en) 1992-07-15
EP0348912B1 (en) 1997-03-05

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