JPS551012A - Post focusing type color picture tube - Google Patents
Post focusing type color picture tubeInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6774554B1 (en) | 1999-09-21 | 2004-08-10 | Matsushita Electric Industrial Co., Ltd. | Cathode ray tube |
-
1978
- 1978-06-16 JP JP7215678A patent/JPS551012A/en active Granted
Cited By (1)
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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