JPS6435951A - Semiconductor device - Google Patents
Semiconductor deviceInfo
- Publication number
- JPS6435951A JPS6435951A JP19074087A JP19074087A JPS6435951A JP S6435951 A JPS6435951 A JP S6435951A JP 19074087 A JP19074087 A JP 19074087A JP 19074087 A JP19074087 A JP 19074087A JP S6435951 A JPS6435951 A JP S6435951A
- Authority
- JP
- Japan
- Prior art keywords
- forming
- substrate surface
- pnp transistor
- lateral pnp
- emitter region
- 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
- Bipolar Transistors (AREA)
- Bipolar Integrated Circuits (AREA)
Abstract
PURPOSE:To increase the current amplification factor of a bipolar type lateral PNP transistor by forming a recess in the substrate surface, forming the emitter region of the bipolar type lateral PNP transistor, and forming the collector and base regions in the substrate surface other than the emitter region. CONSTITUTION:A recess 10 is provided in the semiconductor substrate surface, an emitter region 6 of a bipolar type lateral PNP transistor is formed in the inner surface of the recess, and the collector and base regions 5, 7 are formed in the semiconductor substrate surface other than the region 6. With this, since the emitter region layer approaches an N-type buried layer without forming the N-type buried layer twice, the diffusion current component immediately below the emitter decreases, thereby increasing the current amplification factor of the bipolar type lateral PNP transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19074087A JPS6435951A (en) | 1987-07-30 | 1987-07-30 | Semiconductor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19074087A JPS6435951A (en) | 1987-07-30 | 1987-07-30 | Semiconductor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6435951A true JPS6435951A (en) | 1989-02-07 |
Family
ID=16262975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19074087A Pending JPS6435951A (en) | 1987-07-30 | 1987-07-30 | Semiconductor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6435951A (en) |
-
1987
- 1987-07-30 JP JP19074087A patent/JPS6435951A/en active Pending
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