JPS5687030A - Display device in finder of camera - Google Patents
Display device in finder of cameraInfo
- Publication number
- JPS5687030A JPS5687030A JP16373779A JP16373779A JPS5687030A JP S5687030 A JPS5687030 A JP S5687030A JP 16373779 A JP16373779 A JP 16373779A JP 16373779 A JP16373779 A JP 16373779A JP S5687030 A JPS5687030 A JP S5687030A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- type
- gate
- potential gradient
- 12aw12n
- 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
Abstract
PURPOSE: To decrease troubles and make size smaller and cost lower by the constitution consisting in integrating p-n junction parts forming LEDs and field effect type switching means as well as resistors and combining these to a single semiconductor integrated circuit.
CONSTITUTION: The potential gradient shown by a straight line L is produced by the induced voltage V2 of a voltage source 15 in a resistance type insulation gate 11. In a region where the voltage exceeds predetermined threshold voltage V-th out of the potential gradient, an inversion layer is formed below the gate 11, and said part goes ON. Thereupon, current flows through a p type semiconductor 13, divided n type semicondcutors 12aW12n, and further the inversion layer under the gate 11, thus causing the parts of the divided n type semiconductors 12aW12n to emit light. When the output voltage value V1 of a variable voltage generating source 14 changes in this state, the straight line L of the potential gradient parallel moves vertically, and the point of intersection with the threshold voltage V-th also moves, thus the change in information is analogically displayed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16373779A JPS5687030A (en) | 1979-12-17 | 1979-12-17 | Display device in finder of camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16373779A JPS5687030A (en) | 1979-12-17 | 1979-12-17 | Display device in finder of camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5687030A true JPS5687030A (en) | 1981-07-15 |
Family
ID=15779709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16373779A Pending JPS5687030A (en) | 1979-12-17 | 1979-12-17 | Display device in finder of camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5687030A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2662038A1 (en) * | 1990-04-26 | 1991-11-15 | Gold Star Co | Device for on-screen viewing of the zoom position of a camcorder |
-
1979
- 1979-12-17 JP JP16373779A patent/JPS5687030A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2662038A1 (en) * | 1990-04-26 | 1991-11-15 | Gold Star Co | Device for on-screen viewing of the zoom position of a camcorder |
US5185670A (en) * | 1990-04-26 | 1993-02-09 | Gold Star Co., Ltd. | Zooming position on-screen display device for camcorders |
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