JPS5264881A - Semiconductor device and its production - Google Patents

Semiconductor device and its production

Info

Publication number
JPS5264881A
JPS5264881A JP50140164A JP14016475A JPS5264881A JP S5264881 A JPS5264881 A JP S5264881A JP 50140164 A JP50140164 A JP 50140164A JP 14016475 A JP14016475 A JP 14016475A JP S5264881 A JPS5264881 A JP S5264881A
Authority
JP
Japan
Prior art keywords
semiconductor device
production
forming
mesa grooves
annular mesa
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
JP50140164A
Other languages
Japanese (ja)
Inventor
Komei Yatsuno
Takuzo Ogawa
Takaya Suzuki
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 JP50140164A priority Critical patent/JPS5264881A/en
Publication of JPS5264881A publication Critical patent/JPS5264881A/en
Pending legal-status Critical Current

Links

Landscapes

  • Formation Of Insulating Films (AREA)
  • Bipolar Transistors (AREA)

Abstract

PURPOSE: To obtain a semiconductor device of less forward voltage drop by vapor-growing a polycrystalline Si layer on the opposite surface of the surface for forming annular mesa grooves of a semiconductor wafer and forming a passivation film in the annular mesa grooves.
COPYRIGHT: (C)1977,JPO&Japio
JP50140164A 1975-11-25 1975-11-25 Semiconductor device and its production Pending JPS5264881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50140164A JPS5264881A (en) 1975-11-25 1975-11-25 Semiconductor device and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50140164A JPS5264881A (en) 1975-11-25 1975-11-25 Semiconductor device and its production

Publications (1)

Publication Number Publication Date
JPS5264881A true JPS5264881A (en) 1977-05-28

Family

ID=15262355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50140164A Pending JPS5264881A (en) 1975-11-25 1975-11-25 Semiconductor device and its production

Country Status (1)

Country Link
JP (1) JPS5264881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794445A (en) * 1986-07-31 1988-12-27 Hitachi, Ltd. Semiconductor device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4826066A (en) * 1971-08-04 1973-04-05
JPS5049980A (en) * 1973-09-03 1975-05-06

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4826066A (en) * 1971-08-04 1973-04-05
JPS5049980A (en) * 1973-09-03 1975-05-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794445A (en) * 1986-07-31 1988-12-27 Hitachi, Ltd. Semiconductor device

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