JPS572517A - Manufacture of semiconductor device - Google Patents

Manufacture of semiconductor device

Info

Publication number
JPS572517A
JPS572517A JP7650780A JP7650780A JPS572517A JP S572517 A JPS572517 A JP S572517A JP 7650780 A JP7650780 A JP 7650780A JP 7650780 A JP7650780 A JP 7650780A JP S572517 A JPS572517 A JP S572517A
Authority
JP
Japan
Prior art keywords
type
region
back surface
impurity
wafers
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
JP7650780A
Other languages
Japanese (ja)
Inventor
Toshio Tanaka
Mikio Kitamura
Yoshihiko Azuma
Kentaro Matsui
Shozaburo Nishizawa
Masayuki Okamoto
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP7650780A priority Critical patent/JPS572517A/en
Publication of JPS572517A publication Critical patent/JPS572517A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Bipolar Transistors (AREA)

Abstract

PURPOSE:To prevent the dissipation of undesired impurity from the back surface of a water of disposing and heat treating many sets of two sheets of semiconductor wafer having no mask material on the back surface and intimately contacted between the back surface of the wafers in an oven at the prescribed interval. CONSTITUTION:An N<+>N<-> type semiconductor wafer 30 having an N<+> type region 31 and an N<-> type region 32 is prepared, and silicon dioxide films 33, 34 are selectively formed on the surface by an ordinary method. Many sets of two sheets of semiconductor wafers 30a, 30b intimately contacted back-to-back surface B are then formed, are implanted and supported on a boat 26 at the prescribed interval g, and are inserted into an oven 20. When the wafers are then heat treated in an impurity atmosphere, a P type impurity is diffused, and a P type base region 36 is then selectively formed in the region 32. When an N type impurity is similarly diffused, an N type emitter region 37 is formed. Thus, it is not necessary to form a mask material on the back surfaces B.
JP7650780A 1980-06-05 1980-06-05 Manufacture of semiconductor device Pending JPS572517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7650780A JPS572517A (en) 1980-06-05 1980-06-05 Manufacture of semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7650780A JPS572517A (en) 1980-06-05 1980-06-05 Manufacture of semiconductor device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP10159386A Division JPS61280615A (en) 1986-04-30 1986-04-30 Manufacture of semiconductor device

Publications (1)

Publication Number Publication Date
JPS572517A true JPS572517A (en) 1982-01-07

Family

ID=13607152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7650780A Pending JPS572517A (en) 1980-06-05 1980-06-05 Manufacture of semiconductor device

Country Status (1)

Country Link
JP (1) JPS572517A (en)

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