JPS5576556A - Driving method of cathode ray picture plate - Google Patents
Driving method of cathode ray picture plateInfo
- Publication number
- JPS5576556A JPS5576556A JP14967378A JP14967378A JPS5576556A JP S5576556 A JPS5576556 A JP S5576556A JP 14967378 A JP14967378 A JP 14967378A JP 14967378 A JP14967378 A JP 14967378A JP S5576556 A JPS5576556 A JP S5576556A
- Authority
- JP
- Japan
- Prior art keywords
- phosphors
- voltage
- filaments
- controlling electrode
- driving method
- 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
Links
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
PURPOSE: To improve the sensitivity and contrast of pictures with only simple operation by making the voltage applied on the controlling electrode provided between phosphors and filaments variable.
CONSTITUTION: A transparent electrode 2 and a photoconductive layer 3 are coated on the transparent substrate 1b of an envelope 1, on the upper surface a plurality of phosphors 4 are provided in a matrix form, and an untransparent insulation film 5 is formed on the area not provided with phosphors 4. Furthermore filaments 6 are stringed above the phosphors 4, a controlling electrode 7 is formed between filaments 6 and the phosphors 4. A voltage is applied on the controlling electrode 7 through a volume to make the voltage variable. Thus the internal resistance in the picture plate can be varied by varing voltage of the controlling electrode 7, and the sensitivity and contrast of a picture can be controlled preferably.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14967378A JPS5576556A (en) | 1978-12-05 | 1978-12-05 | Driving method of cathode ray picture plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14967378A JPS5576556A (en) | 1978-12-05 | 1978-12-05 | Driving method of cathode ray picture plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5576556A true JPS5576556A (en) | 1980-06-09 |
Family
ID=15480322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14967378A Pending JPS5576556A (en) | 1978-12-05 | 1978-12-05 | Driving method of cathode ray picture plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576556A (en) |
-
1978
- 1978-12-05 JP JP14967378A patent/JPS5576556A/en active Pending
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