JPS56167241A - Electron gun frame body - Google Patents

Electron gun frame body

Info

Publication number
JPS56167241A
JPS56167241A JP7077980A JP7077980A JPS56167241A JP S56167241 A JPS56167241 A JP S56167241A JP 7077980 A JP7077980 A JP 7077980A JP 7077980 A JP7077980 A JP 7077980A JP S56167241 A JPS56167241 A JP S56167241A
Authority
JP
Japan
Prior art keywords
electron beam
thru hole
frame body
electron gun
picture
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
JP7077980A
Other languages
Japanese (ja)
Inventor
Shinichi Sawagata
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 JP7077980A priority Critical patent/JPS56167241A/en
Publication of JPS56167241A publication Critical patent/JPS56167241A/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 attempt uniformity of the quality of a picture screen by specifically selecting the area ratio of the central electron beam thru holes perforated into the first and second electrodes to the thru hole sections on both sides. CONSTITUTION:The central electron beam thru hole section 21b of an eliptical forme is perforated through an electrode 20 in a larger scale than those of electron beam thru hole sections 21a and 21c, of an eliptical form on both sides within the area ratios of 1.2-1.35. This selection of area ratio can reproduce any picture on the color picture tube screen with excellent uniformity of quality and high fidelity.
JP7077980A 1980-05-29 1980-05-29 Electron gun frame body Pending JPS56167241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7077980A JPS56167241A (en) 1980-05-29 1980-05-29 Electron gun frame body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7077980A JPS56167241A (en) 1980-05-29 1980-05-29 Electron gun frame body

Publications (1)

Publication Number Publication Date
JPS56167241A true JPS56167241A (en) 1981-12-22

Family

ID=13441341

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7077980A Pending JPS56167241A (en) 1980-05-29 1980-05-29 Electron gun frame body

Country Status (1)

Country Link
JP (1) JPS56167241A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736133A (en) * 1986-04-24 1988-04-05 Rca Corporation Inline electron gun for high resolution display tube having improved screen grid plate portion
KR100759545B1 (en) * 2001-09-29 2007-09-18 삼성에스디아이 주식회사 Electron gun for the cathode ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736133A (en) * 1986-04-24 1988-04-05 Rca Corporation Inline electron gun for high resolution display tube having improved screen grid plate portion
KR100759545B1 (en) * 2001-09-29 2007-09-18 삼성에스디아이 주식회사 Electron gun for the cathode ray tube

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