JPS57113542A - Electrode structure for electron gun - Google Patents

Electrode structure for electron gun

Info

Publication number
JPS57113542A
JPS57113542A JP29581A JP29581A JPS57113542A JP S57113542 A JPS57113542 A JP S57113542A JP 29581 A JP29581 A JP 29581A JP 29581 A JP29581 A JP 29581A JP S57113542 A JPS57113542 A JP S57113542A
Authority
JP
Japan
Prior art keywords
hole
electrode
laterally elongated
elongated slit
round hole
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
JP29581A
Other languages
Japanese (ja)
Inventor
Kazuo Majima
Mamoru Ikeda
Shigeharu Hatayama
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
Priority to JP29581A priority Critical patent/JPS57113542A/en
Publication of JPS57113542A publication Critical patent/JPS57113542A/en
Pending 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
    • H01J29/485—Construction of the gun or of parts thereof

Abstract

PURPOSE:To improve focusing property by forming a laterally elongated slit at a control electrode side of a second grid and a round hole on the other side and by forming a beam passing hole in the center. CONSTITUTION:A laterally elongated slit 5 is formed on a control electrode side of a second grid electrode 5 and a round hole 5b is formed on the other side. A slit base 5c of the laterally elongated slit 5a and a hole base 5d of the round hole 5b are formed to own a fixed distance 5e, and a beam passing hole 5f is provided at a center penetrating the same. In this way, electronic beam is formed non-axial symmetrically by means of the laterally elongated slit and the beam passing hole and focused by the round hole, while the second grid electrode and a focusing electrode are formed by one sheet of electrode so that focusing property is improved.
JP29581A 1981-01-07 1981-01-07 Electrode structure for electron gun Pending JPS57113542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29581A JPS57113542A (en) 1981-01-07 1981-01-07 Electrode structure for electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29581A JPS57113542A (en) 1981-01-07 1981-01-07 Electrode structure for electron gun

Publications (1)

Publication Number Publication Date
JPS57113542A true JPS57113542A (en) 1982-07-15

Family

ID=11469904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29581A Pending JPS57113542A (en) 1981-01-07 1981-01-07 Electrode structure for electron gun

Country Status (1)

Country Link
JP (1) JPS57113542A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111236A (en) * 1982-12-16 1984-06-27 Mitsubishi Electric Corp 3 electron beams inline electron gun
JPS59211948A (en) * 1983-05-06 1984-11-30 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Cathode ray tube
JPS59211947A (en) * 1983-05-06 1984-11-30 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Cathode ray tube

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111236A (en) * 1982-12-16 1984-06-27 Mitsubishi Electric Corp 3 electron beams inline electron gun
JPS59211948A (en) * 1983-05-06 1984-11-30 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Cathode ray tube
JPS59211947A (en) * 1983-05-06 1984-11-30 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Cathode ray tube
JPH0470730B2 (en) * 1983-05-06 1992-11-11 Rca Licensing Corp
JPH0510787B2 (en) * 1983-05-06 1993-02-10 Aaru Shii Ee Tomuson Raisenshingu Corp

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