JPS5469968A - Transistor - Google Patents
TransistorInfo
- Publication number
- JPS5469968A JPS5469968A JP13659777A JP13659777A JPS5469968A JP S5469968 A JPS5469968 A JP S5469968A JP 13659777 A JP13659777 A JP 13659777A JP 13659777 A JP13659777 A JP 13659777A JP S5469968 A JPS5469968 A JP S5469968A
- Authority
- JP
- Japan
- Prior art keywords
- region
- type
- impurity concentration
- emitter
- carriers
- 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)
Abstract
PURPOSE: To eliminate surface injection of carriers and obtain the transistor of an increased current amplification factor by etching the circumferential edge of its emitter region and forming the low impurity concentration region of the same conductivity type as that of the emitter in said portion.
CONSTITUTION: A P type base region 7 is formed in an N type collector region 10 and an emitter region 8 on N type in said base region. A low impurity concentration region 9 of N type is diffusion-formed in the recessed hole formed by etching the base region to a suitable depth from the circumferential edge part 8a of the emitter region 8 through photoetching. Since the emitter region 5 has a high impurity concentration and a low impurity concentration and 8a is formed in recessed form, controlling of carriers in the surface of a junction part J2 may be performed and the carriers having been inhibited are injected from the central part of the emitter region 8 to the junction part J2, whereby the current amplification factor may be increased.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13659777A JPS5469968A (en) | 1977-11-16 | 1977-11-16 | Transistor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13659777A JPS5469968A (en) | 1977-11-16 | 1977-11-16 | Transistor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5469968A true JPS5469968A (en) | 1979-06-05 |
Family
ID=15179009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13659777A Pending JPS5469968A (en) | 1977-11-16 | 1977-11-16 | Transistor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5469968A (en) |
-
1977
- 1977-11-16 JP JP13659777A patent/JPS5469968A/en active Pending
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