JPS5469059A - Rear-step focusing color picture tube - Google Patents

Rear-step focusing color picture tube

Info

Publication number
JPS5469059A
JPS5469059A JP13571277A JP13571277A JPS5469059A JP S5469059 A JPS5469059 A JP S5469059A JP 13571277 A JP13571277 A JP 13571277A JP 13571277 A JP13571277 A JP 13571277A JP S5469059 A JPS5469059 A JP S5469059A
Authority
JP
Japan
Prior art keywords
electrode
funnel
graphite
voltage
fluorescent 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
JP13571277A
Other languages
Japanese (ja)
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 JP13571277A priority Critical patent/JPS5469059A/en
Publication of JPS5469059A publication Critical patent/JPS5469059A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE: To reduce the deterioration of the focusing characteristics and to suppress the beam landing correcton amount by supplying the same voltage as the fluorescent screen electrode to the 1st funnel graphite electrode and supplying the voltage which is lower then the 1st funnel graphite electrode and the fluorescent screen electrode voltage to the 2nd funnel graphite electrode.
CONSTITUTION: The rear-step focusing color picture tube contains funnel electrodes 8a and 8b which are formed through coating on the inner wall surface of funnel 2 of the tube ball, fluorescent screen electrode 4 which is formed through coating on the inner wall surface of panel 3 of the tube ball, and color selection electrode 5 located opposing to electrode 4. Then 1st funnel graphite electrode 8a and 2nd funnel graphite elecdtrode 8b are formed in split to neck 1 side on the inner wall surface of funnel 2 and to pannel 3 side respectively. After this, the same voltage as fluorescent screen electrode 4 is supplied to electrode 8a, and the voltage lower than electrode 8a and 4 is supplied to electrode 8b. As a result, the deterioration of the focusing characteristics can be reduced, and also the beam landing correction amount can be suppressed.
COPYRIGHT: (C)1979,JPO&Japio
JP13571277A 1977-11-14 1977-11-14 Rear-step focusing color picture tube Pending JPS5469059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13571277A JPS5469059A (en) 1977-11-14 1977-11-14 Rear-step focusing color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13571277A JPS5469059A (en) 1977-11-14 1977-11-14 Rear-step focusing color picture tube

Publications (1)

Publication Number Publication Date
JPS5469059A true JPS5469059A (en) 1979-06-02

Family

ID=15158109

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13571277A Pending JPS5469059A (en) 1977-11-14 1977-11-14 Rear-step focusing color picture tube

Country Status (1)

Country Link
JP (1) JPS5469059A (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

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