JPS551012A - Post focusing type color picture tube - Google Patents

Post focusing type color picture tube

Info

Publication number
JPS551012A
JPS551012A JP7215678A JP7215678A JPS551012A JP S551012 A JPS551012 A JP S551012A JP 7215678 A JP7215678 A JP 7215678A JP 7215678 A JP7215678 A JP 7215678A JP S551012 A JPS551012 A JP S551012A
Authority
JP
Japan
Prior art keywords
funnel
electrode
graphite
picture tube
voltage
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.)
Granted
Application number
JP7215678A
Other languages
Japanese (ja)
Other versions
JPS6248343B2 (en
Inventor
Katsuyoshi Tamura
Hiromi Kanai
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 JP7215678A priority Critical patent/JPS551012A/en
Publication of JPS551012A publication Critical patent/JPS551012A/en
Publication of JPS6248343B2 publication Critical patent/JPS6248343B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE: To obtain a color picture tube of post focusing type, in which a deterioration of focus characteristic is made to be suppressed further with a correction amount of beam riding suppressed, by providing graphite electrodes of more than three kinds, with a potential distribution being different, in the inner wall face of funnel part.
CONSTITUTION: In the inner wall face of a funnel part 2, are provided first to third funnel graphite electrodes 8a to 8c, divisionally colored into three sections with a prescribed interval of distance d apart, respectively. And electrode voltages EF1, EF3 of the first funnel graphite electrode 8a, the third funnel graphite electrode 8c are set to the same potential as a fluorescent electrode voltage EP, simultaneously with a voltage EF2 of the second funnel graphite electrode 8b set to the same potential as a color selecting electrode voltage EM lower than the fluorescent electrode voltage EP. In such constitution, a good focus characteristic can be provided with a less correction amount of riding further with a less distortion of raster made capable.
COPYRIGHT: (C)1980,JPO&Japio
JP7215678A 1978-06-16 1978-06-16 Post focusing type color picture tube Granted JPS551012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7215678A JPS551012A (en) 1978-06-16 1978-06-16 Post focusing type color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7215678A JPS551012A (en) 1978-06-16 1978-06-16 Post focusing type color picture tube

Publications (2)

Publication Number Publication Date
JPS551012A true JPS551012A (en) 1980-01-07
JPS6248343B2 JPS6248343B2 (en) 1987-10-13

Family

ID=13481105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7215678A Granted JPS551012A (en) 1978-06-16 1978-06-16 Post focusing type color picture tube

Country Status (1)

Country Link
JP (1) JPS551012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6774554B1 (en) 1999-09-21 2004-08-10 Matsushita Electric Industrial Co., Ltd. Cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6774554B1 (en) 1999-09-21 2004-08-10 Matsushita Electric Industrial Co., Ltd. Cathode ray tube

Also Published As

Publication number Publication date
JPS6248343B2 (en) 1987-10-13

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