-
公开(公告)号:US10586855B2
公开(公告)日:2020-03-10
申请号:US15961264
申请日:2018-04-24
发明人: Hyun-Jin Cho , Tenko Yamashita , Hui Zang
IPC分类号: H01L29/51 , H01L27/092 , H01L29/78 , H01L29/66 , H01L29/49 , H01L29/423 , H01L21/84 , H01L21/8238 , H01L21/02 , H01L21/28 , H01L27/12
摘要: A method of forming a gate structure for a semiconductor device that includes forming first spacers on the sidewalls of replacement gate structures that are present on a fin structure, wherein an upper surface of the first spacers is offset from an upper surface of the replacement gate structure, and forming at least second spacers on the first spacers and the exposed surfaces of the replacement gate structure. The method may further include substituting the replacement gate structure with a functional gate structure having a first width portion in a first space between adjacent first spacers, and a second width portion having a second width in a second space between adjacent second spacers, wherein the second width is greater than the first width.
-
公开(公告)号:US10535606B2
公开(公告)日:2020-01-14
申请号:US16040752
申请日:2018-07-20
发明人: Takashi Ando , Hiroaki Niimi , Tenko Yamashita
IPC分类号: H01L23/528 , H01L23/535 , H01L27/092 , H01L21/8238 , H01L21/02 , H01L21/768 , H01L29/51 , H01L29/66
摘要: A method of making a semiconductor device includes forming a first source/drain trench and a second source/drain trench over a first and second source/drain region, respectively; forming a first silicon dioxide layer in the first source/drain trench and a second silicon dioxide layer in the second source/drain trench; forming a first source/drain contact over the first source/drain region, the first source/drain contact including a first tri-layer contact disposed between the first silicon dioxide layer and a first conductive material; and forming a second source/drain contact over the second source/drain region, the second source/drain contact including a second tri-layer contact disposed between the second silicon dioxide layer and a second conductive material; wherein the first tri-layer contact includes a first metal oxide layer in contact with the first silicon dioxide layer, and the second tri-layer contact includes a second metal oxide layer in contact with the second silicon dioxide layer.
-
公开(公告)号:US10396000B2
公开(公告)日:2019-08-27
申请号:US14789476
申请日:2015-07-01
发明人: Tenko Yamashita , Chun-Chen Yeh , Hui Zang
IPC分类号: H01L21/66 , H01L29/66 , H01L21/8234 , H01L27/088
摘要: Embodiments are directed to a method Embodiments are directed to a test structure of a fin-type field effect transistor (FinFET). The test structure includes a first conducting layer electrically coupled to a dummy gate of the FinFET, and a second conducting layer electrically coupled to a substrate of the FinFET. The test structure further includes a third conducting layer electrically coupled to the dummy gate of the FinFET, and a first region of the FinFET at least partially bound by the first conducting layer and the second conducting layer. The test structure further includes a second region of the FinFET at least partially bound by the second conducting layer and the third conducting layer, wherein the first region comprises a first dielectric having a first dimension, and wherein the second region comprises a second dielectric having a second dimension greater than the first dimension.
-
公开(公告)号:US20190214307A1
公开(公告)日:2019-07-11
申请号:US15868199
申请日:2018-01-11
申请人: GLOBALFOUNDRIES Inc.
发明人: Ruilong Xie , Chun-chen Yeh , Kangguo Cheng , Tenko Yamashita
IPC分类号: H01L21/8234 , H01L27/088
摘要: Structures including a vertical-transport field-effect transistor and a planar field-effect transistor, and methods of forming such structures. First and second sacrificial fins are respectively formed over first and second areas of the first device region. One or more semiconductor fins of the vertical-transport field-effect transistor are formed over the second device region. A first gate electrode of the planar field-effect transistor, which is arranged on the first device region between the first sacrificial fin and the second sacrificial fin, and a second gate electrode of the vertical-transport field-effect transistor, which is wrapped about the one or more semiconductor fins, are currently formed.
-
公开(公告)号:US10224207B2
公开(公告)日:2019-03-05
申请号:US15801458
申请日:2017-11-02
发明人: Kangguo Cheng , Ruilong Xie , Tenko Yamashita
IPC分类号: H01L29/06 , H01L29/66 , H01L21/285 , H01L29/78 , H01L29/08 , H01L29/45 , H01L21/283 , H01L21/8234 , H01L27/088 , H01L29/417 , H01L21/768
摘要: A method of making a semiconductor device includes forming a recessed fin in a substrate, the recessed fin being substantially flush with a surface of the substrate; performing an epitaxial growth process over the recessed fin to form a source/drain over the recessed fin; and disposing a conductive metal around the source/drain.
-
公开(公告)号:US20190019733A1
公开(公告)日:2019-01-17
申请号:US16133850
申请日:2018-09-18
申请人: GLOBALFOUNDRIES INC.
发明人: Ruilong Xie , Cheng Chi , Pietro Montanini , Tenko Yamashita , Nicolas Loubet
IPC分类号: H01L21/8238 , H01L27/092
CPC分类号: H01L21/823821 , H01L21/823807 , H01L21/823814 , H01L27/092
摘要: This disclosure relates to a method of forming nanosheet devices including: forming a first and second nanosheet stack on a substrate, the first and the second nanosheet stacks including a plurality of vertically spaced nanosheets disposed on the substrate and separated by a plurality of spacing members, each of the plurality of spacing members including a sacrificial layer and a pair of inner spacers formed on lateral ends of the sacrificial layer; growing a pair of epitaxial regions adjacent to the first and second nanosheet stacks from each of the plurality of nanosheets such that each of the plurality of inner spacers is enveloped by one of the epitaxial regions; covering the first nanosheet stack with a mask; and forming a pair of p-type source/drain regions on the second nanosheet stack, each of the pair of p-type source/drain regions being adjacent to the epitaxial regions on the second nanosheet stack.
-
公开(公告)号:US10158021B2
公开(公告)日:2018-12-18
申请号:US15873935
申请日:2018-01-18
申请人: GLOBALFOUNDRIES INC.
发明人: Ruilong Xie , Kangguo Cheng , Tenko Yamashita
IPC分类号: H01L29/78 , H01L29/66 , H01L27/088 , H01L21/8234 , H01L23/535 , H01L21/768 , H01L29/417 , H01L21/311
摘要: Disclosed is a method of forming a vertical pillar-type field effect transistor (FET). One or more semiconductor pillars are formed by epitaxial deposition in one or more openings, respectively, that extend through a first dielectric layer and that have high aspect ratios in two directions. The first dielectric layer is etched back and the following components are formed laterally surrounding the semiconductor pillar(s): a first source/drain region above and adjacent to the first dielectric layer, a second dielectric layer on the first source/drain region, a gate on the second dielectric layer and a gate cap on the gate. The gate cap extends over the top surface(s) of the semiconductor pillar(s). A recess is formed in the gate cap to expose at least the top surface(s) of the semiconductor pillar(s) and a second source/drain region is formed within the recess. Also disclosed is the vertical pillar-type FET structure.
-
公开(公告)号:US20180351002A1
公开(公告)日:2018-12-06
申请号:US16057579
申请日:2018-08-07
发明人: Kangguo Cheng , Xin Miao , Ruilong Xie , Tenko Yamashita
IPC分类号: H01L29/786 , H01L29/06 , H01L29/66 , H01L29/423
CPC分类号: H01L29/78696 , H01L29/0649 , H01L29/0673 , H01L29/42384 , H01L29/42392 , H01L29/66545 , H01L29/66742 , H01L29/78618 , H01L29/78654 , H01L29/78684 , H01L29/78687
摘要: In one aspect, a method of forming a semiconductor device includes the steps of: forming an alternating series of sacrificial/active layers on a wafer and patterning it into at least one nano device stack; forming a dummy gate on the nano device stack; patterning at least one upper active layer in the nano device stack to remove all but a portion of the at least one upper active layer beneath the dummy gate; forming spacers on opposite sides of the dummy gate covering the at least one upper active layer that has been patterned; forming source and drain regions on opposite sides of the nano device stack, wherein the at least one upper active layer is separated from the source and drain regions by the spacers; and replacing the dummy gate with a replacement gate. A masking process is also provided to tailor the effective device width of select devices.
-
公开(公告)号:US20180342507A1
公开(公告)日:2018-11-29
申请号:US15604932
申请日:2017-05-25
申请人: GLOBALFOUNDRIES Inc.
发明人: Ruilong Xie , Chun-Chen Yeh , Kangguo Cheng , Tenko Yamashita
IPC分类号: H01L27/088 , H01L29/66 , H01L29/40 , H01L29/417 , H01L29/51 , H01L29/78
摘要: Methods and structures that include a vertical-transport field-effect transistor. A first section of a dielectric layer is deposited on a first device region of a substrate and a second section of the dielectric layer is deposited on a second device region of the substrate. A gate stack is deposited on the first device region and the second device region. The gate stack is patterned to define a first gate electrode of the vertical-transport field-effect transistor on the first section of the dielectric layer and a second gate electrode of a high-voltage field-effect transistor on the second section of the dielectric layer. The first section of the dielectric layer is a spacer layer arranged between the first gate electrode and the first device region. The second section of the dielectric layer is a portion of a gate dielectric arranged between the second gate electrode and the second device region.
-
公开(公告)号:US20180331232A1
公开(公告)日:2018-11-15
申请号:US15590409
申请日:2017-05-09
申请人: GLOBALFOUNDRIES Inc.
发明人: Julien Frougier , Ruilong Xie , Hui Zang , Kangguo Cheng , Tenko Yamashita , Chun-chen Yeh
IPC分类号: H01L29/786 , H01L29/78 , H01L29/06 , H01L29/66 , H01L29/423
CPC分类号: H01L29/78696 , H01L29/0665 , H01L29/42356 , H01L29/66742 , H01L29/66795 , H01L29/785
摘要: Structures for a nanosheet field-effect transistor and methods for forming a structure for a nanosheet field-effect transistor. A fin is formed that includes a first nanosheet channel layer and a second nanosheet channel layer arranged in a vertical stack. A cavity is formed between a portion of the first nanosheet channel layer and a portion of the second nanosheet channel layer. An epitaxially-grown source/drain region is connected with the portion of the first nanosheet channel layer and the portion of the second nanosheet channel layer. A gate structure is formed that includes a section located in a space between the first nanosheet channel layer and the second nanosheet channel layer. The cavity is surrounded by the first nanosheet channel layer, the second nanosheet channel layer, the section of the gate structure, and the source/drain region to define an air gap spacer.
-
-
-
-
-
-
-
-
-