JPS5235584A - Manufacturing process of semiconductor device - Google Patents

Manufacturing process of semiconductor device

Info

Publication number
JPS5235584A
JPS5235584A JP11121975A JP11121975A JPS5235584A JP S5235584 A JPS5235584 A JP S5235584A JP 11121975 A JP11121975 A JP 11121975A JP 11121975 A JP11121975 A JP 11121975A JP S5235584 A JPS5235584 A JP S5235584A
Authority
JP
Japan
Prior art keywords
semiconductor device
manufacturing process
eliminated
formation
way
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
JP11121975A
Other languages
Japanese (ja)
Inventor
Tadaharu Tsuyuki
Yoshibumi Yabuki
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP11121975A priority Critical patent/JPS5235584A/en
Publication of JPS5235584A publication Critical patent/JPS5235584A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: Formation of isolation layer is eliminated by forming mesa groove, and base layer is thinly formed. In this way, an emitter impurity transistor of high hFE can be obtained.
COPYRIGHT: (C)1977,JPO&Japio
JP11121975A 1975-09-13 1975-09-13 Manufacturing process of semiconductor device Pending JPS5235584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11121975A JPS5235584A (en) 1975-09-13 1975-09-13 Manufacturing process of semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11121975A JPS5235584A (en) 1975-09-13 1975-09-13 Manufacturing process of semiconductor device

Publications (1)

Publication Number Publication Date
JPS5235584A true JPS5235584A (en) 1977-03-18

Family

ID=14555535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11121975A Pending JPS5235584A (en) 1975-09-13 1975-09-13 Manufacturing process of semiconductor device

Country Status (1)

Country Link
JP (1) JPS5235584A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750547A (en) * 1985-11-07 1988-06-14 Takao Sakamoto Method for cleaning inner surfaces of heat-transfer tubes in a heat-exchanger
JPS6476714A (en) * 1987-09-18 1989-03-22 Nec Corp Semiconductor substrate
JP2013138168A (en) * 2011-11-28 2013-07-11 Toshiba Corp Semiconductor device and method of manufacturing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750547A (en) * 1985-11-07 1988-06-14 Takao Sakamoto Method for cleaning inner surfaces of heat-transfer tubes in a heat-exchanger
JPS6476714A (en) * 1987-09-18 1989-03-22 Nec Corp Semiconductor substrate
JPH06101444B2 (en) * 1987-09-18 1994-12-12 日本電気株式会社 Semiconductor substrate
JP2013138168A (en) * 2011-11-28 2013-07-11 Toshiba Corp Semiconductor device and method of manufacturing the same
US8866264B2 (en) 2011-11-28 2014-10-21 Kabushiki Kaisha Toshiba Semiconductor device and manufacturing method of the same

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