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    • 10. 发明专利
    • MANUFACTURE OF FIELD-EFFECT TYPE TRANSISTOR
    • JPH03276731A
    • 1991-12-06
    • JP7795990
    • 1990-03-27
    • NIPPON TELEGRAPH & TELEPHONE
    • MIYAKE MASAYASUIMAI KAZUO
    • H01L29/78H01L21/336
    • PURPOSE:To make it possible to provide high function and miniaturization by forming a second source region part and second drain region part which are connected to a first source region part and a first drain region part, respectively, at the parts deeper than the first region parts. CONSTITUTION:A first source region part 22 and a first drain region part 23 wherein p-type impurities are diffused are formed through insulating layers 17 and 18 from impurity containing layers 15 and 16, respectively, in regions beneath the insulating layers 17 and 18 by heat treatment in a semiconductor substrate 1. P-type impurities from an impurity containing layer 21 are diffused into regions 19 and 20. A second source region part 24 and a second drain region part 25 are connected to first region part and formed with the impurity containing layer 21. A source electrode layer 26 and a drain electrode layer 27 which are connected to the second source region part 24 and the second drain electrode region 25, respectively, are formed with the impurity containing layer 21. At the same time, an insulating layer 5' is exposed to the outside.