JPS5596684A - Light drive semiconductor controlled rectifier - Google Patents
Light drive semiconductor controlled rectifierInfo
- Publication number
- JPS5596684A JPS5596684A JP397279A JP397279A JPS5596684A JP S5596684 A JPS5596684 A JP S5596684A JP 397279 A JP397279 A JP 397279A JP 397279 A JP397279 A JP 397279A JP S5596684 A JPS5596684 A JP S5596684A
- Authority
- JP
- Japan
- Prior art keywords
- light
- electrode
- layer
- thyristor
- photodetector
- 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.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 title abstract 2
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 abstract 1
- 230000001012 protector Effects 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
Landscapes
- Thyristors (AREA)
- Light Receiving Elements (AREA)
Abstract
PURPOSE: To prevent a light thyristor from damaging when generating an overvoltage and improve the light trigger sensitivity of a light drive semiconductor controlled rectifier by providing overvoltage protecting electrode means partially in a light gate region.
CONSTITUTION: The resistance of a p-type base layer pB is not high in a high withstand voltage thyristor. Since the voltage drop at the layer pB of a photodetector does not, however, contribute to triggering, the voltage drop at this portion should be preferably low. Accordingly, after an electrode 300 is provided in a light gate region to concentrate photocurrent generated in the photodetector by a light control signal given through an optical fiber 30 from a photodiode 2 once to the electrode 300, the photocurrent is flown to the layer pB directly under the n-type emitter layer nE connected to the cathode electrode 140 of an auxiliary thyristor. Thus, wasteful voltage drop at the layer pB in the photodetector can be lowered. On the other hand, since a current from a protector 4 can pass through the electrode 30 in case that an overvoltage is applied thereto, it can operate as a normal p-gate to thereby prevent the thyristor from damaging locally.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54003972A JPS5945232B2 (en) | 1979-01-19 | 1979-01-19 | Light-driven semiconductor-controlled rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54003972A JPS5945232B2 (en) | 1979-01-19 | 1979-01-19 | Light-driven semiconductor-controlled rectifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5596684A true JPS5596684A (en) | 1980-07-23 |
| JPS5945232B2 JPS5945232B2 (en) | 1984-11-05 |
Family
ID=11571975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54003972A Expired JPS5945232B2 (en) | 1979-01-19 | 1979-01-19 | Light-driven semiconductor-controlled rectifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5945232B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57196568A (en) * | 1981-05-27 | 1982-12-02 | Fuji Electric Corp Res & Dev Ltd | Photo trigger thyristor |
| JPS59124160A (en) * | 1982-12-29 | 1984-07-18 | Fuji Electric Corp Res & Dev Ltd | Optical thyristor |
| JP2021122034A (en) * | 2020-01-31 | 2021-08-26 | 新光電気工業株式会社 | Electrostatic chuck and board fixing device |
-
1979
- 1979-01-19 JP JP54003972A patent/JPS5945232B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57196568A (en) * | 1981-05-27 | 1982-12-02 | Fuji Electric Corp Res & Dev Ltd | Photo trigger thyristor |
| JPS59124160A (en) * | 1982-12-29 | 1984-07-18 | Fuji Electric Corp Res & Dev Ltd | Optical thyristor |
| JP2021122034A (en) * | 2020-01-31 | 2021-08-26 | 新光電気工業株式会社 | Electrostatic chuck and board fixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5945232B2 (en) | 1984-11-05 |
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