JPS5479556A - Electron gun for chthode-ray tube - Google Patents

Electron gun for chthode-ray tube

Info

Publication number
JPS5479556A
JPS5479556A JP14677277A JP14677277A JPS5479556A JP S5479556 A JPS5479556 A JP S5479556A JP 14677277 A JP14677277 A JP 14677277A JP 14677277 A JP14677277 A JP 14677277A JP S5479556 A JPS5479556 A JP S5479556A
Authority
JP
Japan
Prior art keywords
grid
cathode
forming
chthode
ray tube
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
JP14677277A
Other languages
Japanese (ja)
Inventor
Yoji Ogawa
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 JP14677277A priority Critical patent/JPS5479556A/en
Publication of JPS5479556A publication Critical patent/JPS5479556A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a high-brightness and high-distinction display picture with the constitution simplified by eliminating an aperture of the 3rd grid and by forming the 3rd grid of a cylinder larger in diameter than that of the 2nd grid.
CONSTITUTION: An electron flow emitted from cathode 11 is focused by the cathode lens formed of cathode 11, and the 1at and 2nd grinds 12 and 13, thereby forming crossover X. After forming this crossover X, the electron flow diverges and strikes the main lens, formed of the 3rd grid 14 and 4th grid 15, by way of the pre-focus lens of the 2ns grid 13 and 3rd grid 14, so that it will be irradiation-projected upon the face plate through tight focusing of the main lens. Grid 14 has no aperture and the caliber of the pre-focus lens formed between girds 14 and 13 is large.
COPYRIGHT: (C)1979,JPO&Japio
JP14677277A 1977-12-07 1977-12-07 Electron gun for chthode-ray tube Pending JPS5479556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14677277A JPS5479556A (en) 1977-12-07 1977-12-07 Electron gun for chthode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14677277A JPS5479556A (en) 1977-12-07 1977-12-07 Electron gun for chthode-ray tube

Publications (1)

Publication Number Publication Date
JPS5479556A true JPS5479556A (en) 1979-06-25

Family

ID=15415188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14677277A Pending JPS5479556A (en) 1977-12-07 1977-12-07 Electron gun for chthode-ray tube

Country Status (1)

Country Link
JP (1) JPS5479556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100418934B1 (en) * 2002-02-28 2004-02-14 엘지.필립스디스플레이(주) Gun for Color CRT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100418934B1 (en) * 2002-02-28 2004-02-14 엘지.필립스디스플레이(주) Gun for Color CRT

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