JPS56138953A - Semiconductor device - Google Patents

Semiconductor device

Info

Publication number
JPS56138953A
JPS56138953A JP4174880A JP4174880A JPS56138953A JP S56138953 A JPS56138953 A JP S56138953A JP 4174880 A JP4174880 A JP 4174880A JP 4174880 A JP4174880 A JP 4174880A JP S56138953 A JPS56138953 A JP S56138953A
Authority
JP
Japan
Prior art keywords
oxide film
gate oxide
type
layer
junction
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
JP4174880A
Other languages
Japanese (ja)
Inventor
Kunihiko Wada
Takashi Matsumoto
Hitoshi Hasegawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4174880A priority Critical patent/JPS56138953A/en
Publication of JPS56138953A publication Critical patent/JPS56138953A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/0203Particular design considerations for integrated circuits
    • H01L27/0248Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection
    • H01L27/0251Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices
    • H01L27/0255Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices using diodes as protective elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Protection Of Static Devices (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To obtain a protection diode effectively functioning without supplying a bias voltage thereto by forming a gate oxide film having desired charge at a part of an MOS semiconductor device and applying a potential effectively to the gate. CONSTITUTION:An N<+> type silicon layer 14 is formed on the first element region 13a isolated by the field silicon oxide film 12 of a P type silicon substrate 11. A gate oxide film 17 having negative charge made of alumina covering the P-N junction 16 of the peripheral edge of an N<+> type Si layer 14 and P type Si substrate 11 is formed on a gate oxide film 15 made of SiO2 formed on the surface of the element region 13a. A wire 20 is formed through an insulating film 18, and connected to the drain 22 of an MOS transistor. Negative potential is applied to the gate oxide film 17' by the negative load of the alumina layer 17, the breakdown voltage of the P-N junction is decreased to protect the drain.
JP4174880A 1980-03-31 1980-03-31 Semiconductor device Pending JPS56138953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4174880A JPS56138953A (en) 1980-03-31 1980-03-31 Semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4174880A JPS56138953A (en) 1980-03-31 1980-03-31 Semiconductor device

Publications (1)

Publication Number Publication Date
JPS56138953A true JPS56138953A (en) 1981-10-29

Family

ID=12617037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4174880A Pending JPS56138953A (en) 1980-03-31 1980-03-31 Semiconductor device

Country Status (1)

Country Link
JP (1) JPS56138953A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720737A (en) * 1983-06-30 1988-01-19 Fujitsu Limited Semiconductor device having a protection circuit with lateral bipolar transistor
US4990984A (en) * 1987-11-27 1991-02-05 Nec Corporation Semiconductor device having protective element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110773A (en) * 1974-07-16 1976-01-28 Nippon Electric Co Mos gatahandotaikairo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110773A (en) * 1974-07-16 1976-01-28 Nippon Electric Co Mos gatahandotaikairo

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720737A (en) * 1983-06-30 1988-01-19 Fujitsu Limited Semiconductor device having a protection circuit with lateral bipolar transistor
US4990984A (en) * 1987-11-27 1991-02-05 Nec Corporation Semiconductor device having protective element

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