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EP0628983A4 - Electron gun for color image receiving tube. - Google Patents

Electron gun for color image receiving tube.

Info

Publication number
EP0628983A4
EP0628983A4 EP94903111A EP94903111A EP0628983A4 EP 0628983 A4 EP0628983 A4 EP 0628983A4 EP 94903111 A EP94903111 A EP 94903111A EP 94903111 A EP94903111 A EP 94903111A EP 0628983 A4 EP0628983 A4 EP 0628983A4
Authority
EP
European Patent Office
Prior art keywords
electron gun
focusing
color image
image receiving
receiving tube
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Withdrawn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
EP94903111A
Other languages
German (de)
French (fr)
Other versions
EP0628983A1 (en
Inventor
Kyung Ho Kim
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.)
Orion Electric Co Ltd Korea
Original Assignee
Orion Electric Co Ltd Korea
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
Priority claimed from KR92028105U external-priority patent/KR950003539Y1/en
Application filed by Orion Electric Co Ltd Korea filed Critical Orion Electric Co Ltd Korea
Publication of EP0628983A1 publication Critical patent/EP0628983A1/en
Publication of EP0628983A4 publication Critical patent/EP0628983A4/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Withdrawn legal-status Critical Current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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/626—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields
    • H01J29/628—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields co-operating with or closely associated to an electron gun

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

The focusing characteristic of this electron gun is not impaired by the aberration caused by the deviation of the centers of the holes on both sides of the main lens, through which the electron beams are passed, and the astigmatism of the electron beams due to the uneven magnetic field such as of a deflecting yoke when the electron gun is in operation. In the focusing electrode (1) of the electron gun, a plurality of focusing grooves are formed in parallel with the direction in which the electron beams are passed. A plurality of additional electrode members, each consisting of a flat thin plate, are inserted into the focusing grooves, respectively.
EP94903111A 1992-12-31 1993-12-28 Electron gun for color image receiving tube. Withdrawn EP0628983A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1992281U 1992-12-31
KR92028105U KR950003539Y1 (en) 1992-12-31 1992-12-31 Electron gun for color tv
PCT/KR1993/000118 WO1994016457A1 (en) 1992-12-31 1993-12-28 Electron gun for color image receiving tube

Publications (2)

Publication Number Publication Date
EP0628983A1 EP0628983A1 (en) 1994-12-14
EP0628983A4 true EP0628983A4 (en) 1995-06-07

Family

ID=26629475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94903111A Withdrawn EP0628983A4 (en) 1992-12-31 1993-12-28 Electron gun for color image receiving tube.

Country Status (1)

Country Link
EP (1) EP0628983A4 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208610A (en) * 1978-06-09 1980-06-17 Zenith Radio Corporation Television picture tubes having an electron gun with aperture electrode shielding means
JPS59171434A (en) * 1983-03-18 1984-09-27 Hitachi Ltd Electron gun structure for color picture tube
US4498026A (en) * 1982-02-03 1985-02-05 Hitachi, Ltd. Electron gun for color picture tube
DE3614700A1 (en) * 1985-04-30 1986-11-06 Hitachi, Ltd., Tokio/Tokyo CATHODE RAY TUBE
JPS61264642A (en) * 1985-05-20 1986-11-22 Matsushita Electronics Corp Inline type electron gun
EP0241218A2 (en) * 1986-04-03 1987-10-14 Mitsubishi Denki Kabushiki Kaisha Cathode ray tube apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208610A (en) * 1978-06-09 1980-06-17 Zenith Radio Corporation Television picture tubes having an electron gun with aperture electrode shielding means
US4498026A (en) * 1982-02-03 1985-02-05 Hitachi, Ltd. Electron gun for color picture tube
JPS59171434A (en) * 1983-03-18 1984-09-27 Hitachi Ltd Electron gun structure for color picture tube
DE3614700A1 (en) * 1985-04-30 1986-11-06 Hitachi, Ltd., Tokio/Tokyo CATHODE RAY TUBE
JPS61264642A (en) * 1985-05-20 1986-11-22 Matsushita Electronics Corp Inline type electron gun
EP0241218A2 (en) * 1986-04-03 1987-10-14 Mitsubishi Denki Kabushiki Kaisha Cathode ray tube apparatus

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 027 (E - 294) 6 February 1985 (1985-02-06) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 117 (E - 498) 11 April 1987 (1987-04-11) *
See also references of WO9416457A1 *

Also Published As

Publication number Publication date
EP0628983A1 (en) 1994-12-14

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19960716