公开(公告)号：US09312258B2

公开(公告)日：2016-04-12

申请号：US13936214

申请日：2013-07-08

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Guang-Yaw Hwang ,  Ling-Chun Chou ,  I-Chang Wang ,  Shin-Chuan Huang ,  Jiunn-Hsiung Liao ,  Shin-Chi Chen ,  Pau-Chung Lin ,  Chiu-Hsien Yeh ,  Chin-Cheng Chien ,  Chieh-Te Chen

IPC: H01L27/088 ,  H01L21/8238 ,  H01L29/66 ,  H01L29/78 ,  H01L29/165

CPC classification number: H01L27/088 ,  H01L21/823807 ,  H01L21/823814 ,  H01L29/165 ,  H01L29/66636 ,  H01L29/7848

Abstract: A strained silicon substrate structure includes a first transistor and a second transistor disposed on a substrate. The first transistor includes a first gate structure and two first source/drain regions disposed at two sides of the first gate structure. A first source/drain to gate distance is between each first source/drain region and the first gate structure. The second transistor includes a second gate structure and two source/drain doped regions disposed at two side of the second gate structure. A second source/drain to gate distance is between each second source/drain region and the second gate structure. The first source/drain to gate distance is smaller than the second source/drain to gate distance.