TW238404B - Fabrication of twin-well - Google Patents

Fabrication of twin-well

Info

Publication number
TW238404B
TW238404B TW83108636A TW83108636A TW238404B TW 238404 B TW238404 B TW 238404B TW 83108636 A TW83108636 A TW 83108636A TW 83108636 A TW83108636 A TW 83108636A TW 238404 B TW238404 B TW 238404B
Authority
TW
Taiwan
Prior art keywords
type
fabrication
well
twin
semiconductor substrate
Prior art date
Application number
TW83108636A
Other languages
Chinese (zh)
Inventor
Sheng-Shyong Yang
Original Assignee
United Microelectronics 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 United Microelectronics Corp filed Critical United Microelectronics Corp
Priority to TW83108636A priority Critical patent/TW238404B/en
Application granted granted Critical
Publication of TW238404B publication Critical patent/TW238404B/en

Links

Landscapes

  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Semiconductor Memories (AREA)

Abstract

A fabrication of twin-well suitable for the fabrication of the first-type and the second-type well of semiconductor substrate includes the following steps: 1. doping the first-type dopant into the semiconductor substrate; 2. forming shielding on the designated first-type well area; 3. doping the second-type dopant into the designated second-type well area on the semiconductor substrate with the shielding as mask; 4. forming the first-type and second-type well area by driving in the first-type dopant and the second-type dopant.
TW83108636A 1994-09-17 1994-09-17 Fabrication of twin-well TW238404B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW83108636A TW238404B (en) 1994-09-17 1994-09-17 Fabrication of twin-well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW83108636A TW238404B (en) 1994-09-17 1994-09-17 Fabrication of twin-well

Publications (1)

Publication Number Publication Date
TW238404B true TW238404B (en) 1995-01-11

Family

ID=51400731

Family Applications (1)

Application Number Title Priority Date Filing Date
TW83108636A TW238404B (en) 1994-09-17 1994-09-17 Fabrication of twin-well

Country Status (1)

Country Link
TW (1) TW238404B (en)

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