JPS5798962A - Electron gun for color picture tube - Google Patents

Electron gun for color picture tube

Info

Publication number
JPS5798962A
JPS5798962A JP17318980A JP17318980A JPS5798962A JP S5798962 A JPS5798962 A JP S5798962A JP 17318980 A JP17318980 A JP 17318980A JP 17318980 A JP17318980 A JP 17318980A JP S5798962 A JPS5798962 A JP S5798962A
Authority
JP
Japan
Prior art keywords
pass
section
tubular section
hole
open end
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
JP17318980A
Other languages
Japanese (ja)
Inventor
Nobuo Yoshino
Shinpei Koshigoe
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
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP17318980A priority Critical patent/JPS5798962A/en
Publication of JPS5798962A publication Critical patent/JPS5798962A/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
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/503—Three or more guns, the axes of which lay in a common plane

Abstract

PURPOSE:To increase the diameter of an electrostatic lens by forming the electron beam pass hole section for forming an electron lens such that the diameters at the tubular section are different at both open hole ends in the axial direction. CONSTITUTION:Two electrodes 20, 20a made of three electron beam pass hole sections 31-33 and 31a-33a are faced then potential difference is provided to form an electron lens. The pass-hole sections 31-33 is constructed with a tubular section 34 having a large open end 34a at the facing side of the electrodes, where said tubular section 34 is formed with a tubular section 36 having a conical section 35 reducing toward the other open end and a small open end 34b. Since the inverted V-shape cross-section is formed between the pass-hole sections 31 and 33, 31 and 32 to increase the average diameter of the pass-hole sections 31-33, the diameter of the electrostatic lens can be enlarged resulting in the improvement of the spherical aberration.
JP17318980A 1980-12-10 1980-12-10 Electron gun for color picture tube Pending JPS5798962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17318980A JPS5798962A (en) 1980-12-10 1980-12-10 Electron gun for color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17318980A JPS5798962A (en) 1980-12-10 1980-12-10 Electron gun for color picture tube

Publications (1)

Publication Number Publication Date
JPS5798962A true JPS5798962A (en) 1982-06-19

Family

ID=15955737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17318980A Pending JPS5798962A (en) 1980-12-10 1980-12-10 Electron gun for color picture tube

Country Status (1)

Country Link
JP (1) JPS5798962A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59119652A (en) * 1982-12-16 1984-07-10 ノ−ス・アメリカン・フイリツプス・コンシユ−マ−・エレクトロニクス・コ−ポレ−シヨン Electron gun assembly
US4584500A (en) * 1983-07-29 1986-04-22 North American Philips Consumer Electronics Corp. Electron gun integral beam correctors in a color cathode ray tube
US4900980A (en) * 1982-08-25 1990-02-13 U.S. Philips Corporation Color display tube

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229164A (en) * 1975-09-01 1977-03-04 Toshiba Corp Electron gun body and its method of production

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229164A (en) * 1975-09-01 1977-03-04 Toshiba Corp Electron gun body and its method of production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900980A (en) * 1982-08-25 1990-02-13 U.S. Philips Corporation Color display tube
JPS59119652A (en) * 1982-12-16 1984-07-10 ノ−ス・アメリカン・フイリツプス・コンシユ−マ−・エレクトロニクス・コ−ポレ−シヨン Electron gun assembly
US4584500A (en) * 1983-07-29 1986-04-22 North American Philips Consumer Electronics Corp. Electron gun integral beam correctors in a color cathode ray tube

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