JPS5214375A - Semi_conducteor device - Google Patents

Semi_conducteor device

Info

Publication number
JPS5214375A
JPS5214375A JP50090242A JP9024275A JPS5214375A JP S5214375 A JPS5214375 A JP S5214375A JP 50090242 A JP50090242 A JP 50090242A JP 9024275 A JP9024275 A JP 9024275A JP S5214375 A JPS5214375 A JP S5214375A
Authority
JP
Japan
Prior art keywords
conducteor
semi
ringed
inspect
wafer
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
JP50090242A
Other languages
Japanese (ja)
Inventor
Mikio Tani
Ichiro Takei
Toshimoto Mogi
Isao Shimura
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 JP50090242A priority Critical patent/JPS5214375A/en
Publication of JPS5214375A publication Critical patent/JPS5214375A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrodes Of Semiconductors (AREA)
  • Bipolar Transistors (AREA)

Abstract

PURPOSE: Ringed P-type layer enclose N-type base layer to improve the characteristics of breakdown voltage and to be able to inspect the characteristics perfectly in the stage of wafer.
COPYRIGHT: (C)1977,JPO&Japio
JP50090242A 1975-07-25 1975-07-25 Semi_conducteor device Pending JPS5214375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50090242A JPS5214375A (en) 1975-07-25 1975-07-25 Semi_conducteor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50090242A JPS5214375A (en) 1975-07-25 1975-07-25 Semi_conducteor device

Publications (1)

Publication Number Publication Date
JPS5214375A true JPS5214375A (en) 1977-02-03

Family

ID=13993017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50090242A Pending JPS5214375A (en) 1975-07-25 1975-07-25 Semi_conducteor device

Country Status (1)

Country Link
JP (1) JPS5214375A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919133U (en) * 1972-05-30 1974-02-18

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919133U (en) * 1972-05-30 1974-02-18

Similar Documents

Publication Publication Date Title
JPS51127682A (en) Manufacturing process of semiconductor device
JPS51135373A (en) Semiconductor device
JPS51127681A (en) Manufacturing process of semiconductor device
JPS5234671A (en) Semiconductor integrated circuit
JPS5297684A (en) Semiconductor element
JPS5315773A (en) Mis type semiconductor device and its production
JPS51112187A (en) Processing method of semiconductor equipment
JPS546480A (en) Semiconductor device
JPS5214375A (en) Semi_conducteor device
JPS5244574A (en) Semiconductor device
JPS5372471A (en) Mis type semiconductor device
JPS5220769A (en) Longitudinal semi-conductor unit
JPS5339880A (en) Field effect type semiconductor device and its production
JPS52117582A (en) Mos type semiconductor device
JPS5243382A (en) Mos type diode
JPS5214377A (en) Semiconductor device
JPS5339073A (en) Semiconductor device
JPS52135273A (en) Mos type semiconductor device
JPS5320862A (en) Production of semiconductor device
JPS5316587A (en) Semiconductor device
JPS51113470A (en) Semiconductor device
JPS5218183A (en) Semiconductor device
JPS539485A (en) Mesa type semiconductor device
JPS5273673A (en) Production of semiconductor device
JPS5265689A (en) Semiconductor integrated circuit and its production