JPS5470780A - Semicoductor capacity device - Google Patents
Semicoductor capacity deviceInfo
- Publication number
- JPS5470780A JPS5470780A JP13806177A JP13806177A JPS5470780A JP S5470780 A JPS5470780 A JP S5470780A JP 13806177 A JP13806177 A JP 13806177A JP 13806177 A JP13806177 A JP 13806177A JP S5470780 A JPS5470780 A JP S5470780A
- Authority
- JP
- Japan
- Prior art keywords
- capacity
- region
- terminal
- type
- junction
- 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
- Semiconductor Integrated Circuits (AREA)
Abstract
PURPOSE: To obtain a capacity device which is capable of the capacity value switching in steps by forming both the PN junction capacity and the MOS capacity within one element and then combining these capacities.
CONSTITUTION: P-type region 2 is formed through diffusion within N-type Si substrate 1; N-type region 3 is provided within region 2; and Althin film 5 is coated via insulator layer 4 on the surface of region 3. Then electrode 6, 7 and 8 are attached on region 1, 2 and 3 each, with terminal 9 provided to film 5. Thus, the PN junction is caused between region 1 and 2 as well as between region 2 and 3, and at the same time the MOS capacity is caused between region 3 and 5. As a result, an electric series connection is cecured for the capacity 10 (between terminal 6 and 7), capacity 11 (between terminal 7 and 8) and capacity 12 (between terminal 8 and 9) respectively. Thus, the desired capacity value can be obtained through a proper connection between these terminals.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13806177A JPS5470780A (en) | 1977-11-16 | 1977-11-16 | Semicoductor capacity device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13806177A JPS5470780A (en) | 1977-11-16 | 1977-11-16 | Semicoductor capacity device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5470780A true JPS5470780A (en) | 1979-06-06 |
Family
ID=15213055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13806177A Pending JPS5470780A (en) | 1977-11-16 | 1977-11-16 | Semicoductor capacity device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5470780A (en) |
-
1977
- 1977-11-16 JP JP13806177A patent/JPS5470780A/en active Pending
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