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JPS55141051A - Electron gun for color picture tube - Google Patents

Electron gun for color picture tube

Info

Publication number
JPS55141051A
JPS55141051A JP5014979A JP5014979A JPS55141051A JP S55141051 A JPS55141051 A JP S55141051A JP 5014979 A JP5014979 A JP 5014979A JP 5014979 A JP5014979 A JP 5014979A JP S55141051 A JPS55141051 A JP S55141051A
Authority
JP
Japan
Prior art keywords
electrode
oval
axis direction
picture tube
screen
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
JP5014979A
Other languages
Japanese (ja)
Inventor
Shigeya Ashizaki
Koichi Sugawara
Hideo Muranishi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP5014979A priority Critical patent/JPS55141051A/en
Publication of JPS55141051A publication Critical patent/JPS55141051A/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 remove the distortion of a beam spot in the vicinity of a screen by forming the electron beam passing window of an inline type electron gun into an oval or a rectangle which has a long axis in the vertical deflection axis direction. CONSTITUTION:The three cathodes K1-K3 are inline arranged in the horizontal axis direction and the control electrode G1, acceleration electrode G2, focusing electrode G3, and anode G4 are provided before each cathode. The electron beam generated at the cathodes K1-K3 is controlled by the control electrode G1. It passes through the acceleration electrode G2 and the focusing electrode G3 and arrives at the anode G4, then it reaches the fluorescent screen. The electron passing holes g31-g33 on the acceleration electrode 2 side of the focusing electrode G3 are formed into a lengthwise oval, i.e. an oval which has a long axis in the vertical axis direction. This prevents the beam spot in the vicinity of the screen of a picture tube from being distorted into an oval which is long in the horizontal or vertical direction.
JP5014979A 1979-04-23 1979-04-23 Electron gun for color picture tube Pending JPS55141051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5014979A JPS55141051A (en) 1979-04-23 1979-04-23 Electron gun for color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5014979A JPS55141051A (en) 1979-04-23 1979-04-23 Electron gun for color picture tube

Publications (1)

Publication Number Publication Date
JPS55141051A true JPS55141051A (en) 1980-11-04

Family

ID=12851119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5014979A Pending JPS55141051A (en) 1979-04-23 1979-04-23 Electron gun for color picture tube

Country Status (1)

Country Link
JP (1) JPS55141051A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831399A (en) * 1995-12-27 1998-11-03 Matsushita Electronics Corporation Color picture tube apparatus
US6133685A (en) * 1996-07-05 2000-10-17 Matsushita Electronics Corporation Cathode-ray tube
US6194824B1 (en) 1997-08-04 2001-02-27 Matsushita Electronics Corporation Color cathode ray tube with astigmatism correction system
US6201345B1 (en) 1997-08-27 2001-03-13 Matsushita Electronics Corporation Cathode-ray tube with electron beams of increased current density
US6320333B1 (en) 1997-02-07 2001-11-20 Matsushita Electric Industrial Co., Ltd. Color picture tube
KR100386490B1 (en) * 1995-07-03 2004-04-06 코닌클리케 필립스 일렉트로닉스 엔.브이. A color cathode ray tube used for a display device and a display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100386490B1 (en) * 1995-07-03 2004-04-06 코닌클리케 필립스 일렉트로닉스 엔.브이. A color cathode ray tube used for a display device and a display device
US5831399A (en) * 1995-12-27 1998-11-03 Matsushita Electronics Corporation Color picture tube apparatus
US6133685A (en) * 1996-07-05 2000-10-17 Matsushita Electronics Corporation Cathode-ray tube
US6320333B1 (en) 1997-02-07 2001-11-20 Matsushita Electric Industrial Co., Ltd. Color picture tube
US6194824B1 (en) 1997-08-04 2001-02-27 Matsushita Electronics Corporation Color cathode ray tube with astigmatism correction system
US6201345B1 (en) 1997-08-27 2001-03-13 Matsushita Electronics Corporation Cathode-ray tube with electron beams of increased current density

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