JPS5348481A - Production of semiconductor device - Google Patents

Production of semiconductor device

Info

Publication number
JPS5348481A
JPS5348481A JP12279876A JP12279876A JPS5348481A JP S5348481 A JPS5348481 A JP S5348481A JP 12279876 A JP12279876 A JP 12279876A JP 12279876 A JP12279876 A JP 12279876A JP S5348481 A JPS5348481 A JP S5348481A
Authority
JP
Japan
Prior art keywords
production
semiconductor device
impurity
contact part
base 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
Application number
JP12279876A
Other languages
Japanese (ja)
Inventor
Keizo Inaba
Shoei Kokubu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12279876A priority Critical patent/JPS5348481A/en
Publication of JPS5348481A publication Critical patent/JPS5348481A/en
Pending legal-status Critical Current

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  • Bipolar Transistors (AREA)

Abstract

PURPOSE: To reduce the number of times of heat treatment and prevent the production of P impurity spots by opening a hole for base contact part formation on the surface oxide film after a base region has been formed, covering the surface with a PSG film, exposing part of the base region and performing emitter diffusion and at the same time diffusing the P impurity from the PSG film thus forming a base contact part.
COPYRIGHT: (C)1978,JPO&Japio
JP12279876A 1976-10-15 1976-10-15 Production of semiconductor device Pending JPS5348481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12279876A JPS5348481A (en) 1976-10-15 1976-10-15 Production of semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12279876A JPS5348481A (en) 1976-10-15 1976-10-15 Production of semiconductor device

Publications (1)

Publication Number Publication Date
JPS5348481A true JPS5348481A (en) 1978-05-01

Family

ID=14844885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12279876A Pending JPS5348481A (en) 1976-10-15 1976-10-15 Production of semiconductor device

Country Status (1)

Country Link
JP (1) JPS5348481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618388A (en) * 1982-09-02 1986-10-21 Central Illinois Manufacturing Co. Water removing filter media and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618388A (en) * 1982-09-02 1986-10-21 Central Illinois Manufacturing Co. Water removing filter media and method of making the same

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