公开(公告)号：US09865702B2

公开(公告)日：2018-01-09

申请号：US15541155

申请日：2015-09-28

Applicant: CSMC TECHNOLOGIES FAB1 CO., LTD.

Inventor： Feng Huang ,  Guangtao Han ,  Guipeng Sun ,  Feng Lin ,  Longjie Zhao ,  Huatang Lin ,  Bing Zhao ,  Lixiang Liu ,  Liangliang Ping ,  Fengying Chen

IPC: H01L29/66 ,  H01L29/739 ,  H01L21/02 ,  H01L21/311 ,  H01L21/265 ,  H01L29/06 ,  H01L29/40

CPC classification number: H01L29/66325 ,  H01L21/02164 ,  H01L21/02211 ,  H01L21/02271 ,  H01L21/02318 ,  H01L21/26513 ,  H01L21/31116 ,  H01L29/0653 ,  H01L29/408 ,  H01L29/7393 ,  H01L29/78

Abstract: The present invention relates to a method for manufacturing a laterally insulated-gate bipolar transistor, comprising: providing a wafer having an N-type buried layer (10), an STI (40), and a first N well (22)/a first P well (24) which are formed successively from above a substrate; depositing and forming a high-temperature oxide film on the first N well (22) of the wafer; performing thermal drive-in on the wafer and performing photoetching and etching on the high-temperature oxide film to form a mini oxide layer (60); performing photoetching and ion implantation so as to form a second N well (32) inside the first N well (22) and second P wells (34) inside the first N well (22) and the first P well (24); then successively forming a gate oxide layer and a polysilicon gate (72), wherein one end of the gate oxide layer and the polysilicon gate (72) extends onto the second P well (34) inside the first N well (22), and the other end extends onto the mini oxide layer (60) on the second N well (32); and photoetching and injecting N-type ions between the mini oxide layer (60) and the STI (40) adjacent to the mini oxide layer (60) to form a drain electrode, and at the same time forming a source electrode (51) inside the second P well (34).

公开(公告)号：US09716169B2

公开(公告)日：2017-07-25

申请号：US14902261

申请日：2014-08-15

Applicant: CSMC TECHNOLOGIES FAB1 CO., LTD.

Inventor： Feng Huang ,  Guipeng Sun ,  Guangtao Han

IPC: H01L29/66 ,  H01L29/78 ,  H01L29/423 ,  H01L29/06 ,  H01L29/08 ,  H01L29/10 ,  H01L29/40

CPC classification number: H01L29/7816 ,  H01L29/0649 ,  H01L29/0653 ,  H01L29/0865 ,  H01L29/0882 ,  H01L29/1045 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/4238 ,  H01L29/66659 ,  H01L29/7835

Abstract: A lateral double diffused metal oxide semiconductor field-effect transistor includes semiconductor substrates, body regions positioned in the semiconductor substrates, drift regions positioned in the semiconductor substrates, source regions and a body leading-out region which are positioned in the body regions and spaced from the drift regions, a field region and drain regions which are positioned in the drift regions, and gates positioned on the surfaces of the semiconductor substrates to partially cover the body regions, the drift regions and the field region, wherein the field region is of a finger-like structure and comprises a plurality of strip field regions which extend from the source regions to the drain regions and are isolated by the active regions; and the strip field regions provided with strip gate extending regions extending from the gates.