ES8204880A1 - Method of fabricating an electron gun electrode member for a cathode-ray tube and cathode ray tube comprising an electron gun electrode member fabricated by this method. - Google Patents

Method of fabricating an electron gun electrode member for a cathode-ray tube and cathode ray tube comprising an electron gun electrode member fabricated by this method.

Info

Publication number
ES8204880A1
ES8204880A1 ES504476A ES504476A ES8204880A1 ES 8204880 A1 ES8204880 A1 ES 8204880A1 ES 504476 A ES504476 A ES 504476A ES 504476 A ES504476 A ES 504476A ES 8204880 A1 ES8204880 A1 ES 8204880A1
Authority
ES
Spain
Prior art keywords
electron gun
ray tube
electrode member
cathode
gun electrode
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.)
Expired
Application number
ES504476A
Other languages
Spanish (es)
Other versions
ES504476A0 (en
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.)
Philips ECG Inc
Original Assignee
Philips ECG Inc
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 Philips ECG Inc filed Critical Philips ECG Inc
Publication of ES504476A0 publication Critical patent/ES504476A0/en
Publication of ES8204880A1 publication Critical patent/ES8204880A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • 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
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Microwave Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

An electron gun electrode is provided with an improved beam shaping region having an elongated recess coined in the upper electrode surface and an opposed coined depression in the lower surface. The double coining fabrication method assures a sharp perimetrical edge about at least the central portion of the recesss, such being an important influence in achieving improved beam shaping lensing.
ES504476A 1980-08-04 1981-07-31 Method of fabricating an electron gun electrode member for a cathode-ray tube and cathode ray tube comprising an electron gun electrode member fabricated by this method. Expired ES8204880A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17516580A 1980-08-04 1980-08-04

Publications (2)

Publication Number Publication Date
ES504476A0 ES504476A0 (en) 1982-05-01
ES8204880A1 true ES8204880A1 (en) 1982-05-01

Family

ID=22639203

Family Applications (1)

Application Number Title Priority Date Filing Date
ES504476A Expired ES8204880A1 (en) 1980-08-04 1981-07-31 Method of fabricating an electron gun electrode member for a cathode-ray tube and cathode ray tube comprising an electron gun electrode member fabricated by this method.

Country Status (5)

Country Link
EP (1) EP0045547B1 (en)
JP (1) JPS5763746A (en)
CA (1) CA1184234A (en)
DE (1) DE3166330D1 (en)
ES (1) ES8204880A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1170150B (en) * 1982-07-19 1987-06-03 Rca Corp GRID EQUIPPED WITH OPENINGS FOR ELECTRONIC CANNONS AND METHOD OF MANUFACTURE OF THE SAME
IT1176203B (en) * 1983-06-27 1987-08-18 Rca Corp CATHODE TUBE WITH AN ELECTRONIC CANNON PRESENTING A REGION OF FORMATION OF AN ASTIGMATIC BEAM
DE3617432A1 (en) * 1986-05-23 1987-11-26 Standard Elektrik Lorenz Ag ELECTRON BEAM GENERATION SYSTEM
JP2672502B2 (en) * 1987-01-26 1997-11-05 株式会社日立製作所 Method for manufacturing electrode for color cathode ray tube electron gun

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935636A (en) * 1955-10-31 1960-05-03 Rca Corp Electron gun structure
US2971108A (en) * 1958-09-26 1961-02-07 Sylvania Electric Prod Electron discharge device
US3628077A (en) * 1970-02-26 1971-12-14 Sylvania Electric Prod Electron gun having concave coined grid and annular rib
US4071932A (en) * 1976-10-28 1978-02-07 Standaart Adrian W Method of making electron guns for cathode ray tubes and the like
JPS55154044A (en) * 1979-05-18 1980-12-01 Hitachi Ltd Electrode structure of electron gun and its manufacture

Also Published As

Publication number Publication date
ES504476A0 (en) 1982-05-01
DE3166330D1 (en) 1984-10-31
EP0045547A2 (en) 1982-02-10
JPH0312417B2 (en) 1991-02-20
EP0045547B1 (en) 1984-09-26
EP0045547A3 (en) 1982-06-23
JPS5763746A (en) 1982-04-17
CA1184234A (en) 1985-03-19

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970519