公开(公告)号：US10204982B2

公开(公告)日：2019-02-12

申请号：US14048232

申请日：2013-10-08

Applicant: STMicroelectronics, Inc.

Inventor： Pierre Morin ,  Qing Liu ,  Nicolas Loubet

IPC: H01L29/06 ,  H01L21/84 ,  H01L27/12 ,  H01L29/78 ,  H01L21/8238

Abstract: A method for forming a semiconductor device includes forming a mask layer on a stressed semiconductor layer of a stressed, semiconductor-on-insulator wafer. An isolation trench bounding the stressed semiconductor layer is formed. The isolation trench extends through the mask layer and into the SOI wafer past an oxide layer thereof. A dielectric body is formed in the isolation trench. A relaxation reduction liner is formed on the dielectric body and on an adjacent sidewall of the stressed semiconductor layer. The mask layer on the stressed semiconductor layer is removed.

公开(公告)号：US10170475B2

公开(公告)日：2019-01-01

申请号：US15448626

申请日：2017-03-03

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION ,  STMICROELECTRONICS, INC.

Inventor： Stephane Allegret-Maret ,  Kangguo Cheng ,  Bruce Doris ,  Prasanna Khare ,  Qing Liu ,  Nicolas Loubet

IPC: H01L29/66 ,  H01L27/092 ,  H01L27/11 ,  H01L21/8238 ,  H01L21/84 ,  H01L29/786 ,  H01L21/02 ,  H01L21/265 ,  H01L21/3065 ,  H01L21/311 ,  H01L21/762 ,  H01L27/12 ,  H01L29/06 ,  H01L29/08 ,  H01L29/165 ,  H01L29/417

Abstract: An improved transistor with channel epitaxial silicon. In one aspect, a method of fabrication includes: forming a gate stack structure on an epitaxial silicon region disposed on a substrate, a width dimension of the epitaxial silicon region approximating a width dimension of the gate stack structure; and growing a raised epitaxial source and drain from the substrate, the raised epitaxial source and drain in contact with the epitaxial silicon region and the gate stack structure. For a SRAM device, further: removing an epitaxial layer in contact with the silicon substrate and the raised source and drain and to which the epitaxial silicon region is coupled leaving a space above the silicon substrate and under the raised epitaxial source and drain; and filling the space with an insulating layer and isolating the raised epitaxial source and drain and a channel of the transistor from the silicon substrate.

公开(公告)号：US10062714B2

公开(公告)日：2018-08-28

申请号：US15177715

申请日：2016-06-09

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION ,  STMicroelectronics, Inc.

Inventor： Bruce Doris ,  Gauri Karve ,  Qing Liu

IPC: H01L31/072 ,  H01L27/12 ,  H01L29/66 ,  H01L29/78 ,  H01L29/417 ,  H01L21/306 ,  H01L21/02 ,  H01L21/8258 ,  H01L21/84 ,  H01L27/088 ,  H01L29/06 ,  H01L29/08 ,  H01L29/161 ,  H01L29/165

CPC classification number: H01L27/1211 ,  H01L21/02057 ,  H01L21/02532 ,  H01L21/30604 ,  H01L21/8258 ,  H01L21/845 ,  H01L27/0886 ,  H01L29/0649 ,  H01L29/0847 ,  H01L29/1054 ,  H01L29/161 ,  H01L29/165 ,  H01L29/41783 ,  H01L29/66545 ,  H01L29/6656 ,  H01L29/66795 ,  H01L29/7848 ,  H01L29/785 ,  H01L29/7851

Abstract: A fin of silicon-germanium material is formed and covered with an epitaxially grown layer of silicon material. A dummy transistor gate is then formed to extend over a channel of the fin. Sidewall spacers are formed on each side of the dummy transistor gate and directly on top of the expitaxial silicon layer. Epitaxially grown raised source and drain regions are formed on each side of the dummy transistor gate adjacent the sidewall spacers. The dummy transistor gate and a portion of the epitaxial silicon layer (underneath said dummy transistor gate) are removed and replaced by a metal gate.

公开(公告)号：US20180239085A1

公开(公告)日：2018-08-23

申请号：US15962633

申请日：2018-04-25

Applicant: STMicroelectronics, Inc.

Inventor： Qing Liu

IPC: G02B6/10 ,  G02B6/122 ,  G02B6/13 ,  C30B25/04 ,  C30B29/06 ,  C30B23/04 ,  G02B6/136 ,  G02B6/032 ,  G02B6/12

CPC classification number: G02B6/107 ,  C30B23/04 ,  C30B25/04 ,  C30B29/06 ,  G02B6/032 ,  G02B6/122 ,  G02B6/131 ,  G02B6/136 ,  G02B2006/12061 ,  G02B2006/12173 ,  G02B2006/12176

Abstract: A strip of sacrificial semiconductor material is formed on top of a non-sacrificial semiconductor material substrate layer. A conformal layer of the non-sacrificial semiconductor material is epitaxially grown to cover the substrate layer and the strip of sacrificial semiconductor material. An etch is performed to selectively remove the strip of sacrificial semiconductor material and leave a hollow channel surrounded by the conformal layer and the substrate layer. Using an anneal, the conformal layer and the substrate layer are reflowed to produce an optical waveguide structure including the hollow channel.

公开(公告)号：US09633909B2

公开(公告)日：2017-04-25

申请号：US14942504

申请日：2015-11-16

Applicant: STMicroelectronics, Inc.

Inventor： Walter Kleemeier ,  Qing Liu

IPC: H01L21/38 ,  H01L21/22 ,  H01L21/8238 ,  H01L29/45 ,  H01L27/092 ,  H01L27/12 ,  H01L21/02 ,  H01L21/84 ,  H01L29/66 ,  H01L29/78 ,  H01L29/778

CPC classification number: H01L21/823814 ,  H01L21/02529 ,  H01L21/02532 ,  H01L21/02584 ,  H01L21/8238 ,  H01L21/823821 ,  H01L21/823871 ,  H01L21/84 ,  H01L27/092 ,  H01L27/0924 ,  H01L27/1203 ,  H01L27/1211 ,  H01L29/45 ,  H01L29/456 ,  H01L29/665 ,  H01L29/66545 ,  H01L29/66628 ,  H01L29/778 ,  H01L29/7789 ,  H01L29/7838

Abstract: An integrated circuit includes a substrate supporting a transistor having a source region and a drain region. A high dopant concentration delta-doped layer is present on the source region and drain region of the transistor. A set of contacts extend through a pre-metal dielectric layer covering the transistor. A silicide region is provided at a bottom of the set of contacts. The silicide region is formed by a salicidation reaction between a metal present at the bottom of the contact and the high dopant concentration delta-doped layer on the source region and drain region of the transistor.

公开(公告)号：US09607901B2

公开(公告)日：2017-03-28

申请号：US14705291

申请日：2015-05-06

Applicant: STMicroelectronics, Inc.

Inventor： Qing Liu ,  Pierre Morin

IPC: H01L21/8238 ,  H01L21/308 ,  H01L21/02 ,  H01L21/3105 ,  H01L21/324 ,  H01L27/092

CPC classification number: H01L27/1211 ,  H01L21/02164 ,  H01L21/0217 ,  H01L21/02592 ,  H01L21/02598 ,  H01L21/02694 ,  H01L21/3081 ,  H01L21/31051 ,  H01L21/324 ,  H01L21/823807 ,  H01L21/823821 ,  H01L21/845 ,  H01L27/0924 ,  H01L29/0649 ,  H01L29/1054 ,  H01L29/66795 ,  H01L29/7849 ,  H01L29/785

Abstract: A tensile strained silicon layer is patterned to form a first group of fins in a first substrate area and a second group of fins in a second substrate area. The second group of fins is covered with a tensile strained material, and an anneal is performed to relax the tensile strained silicon semiconductor material in the second group of fins and produce relaxed silicon semiconductor fins in the second area. The first group of fins is covered with a mask, and silicon-germanium material is provided on the relaxed silicon semiconductor fins. Germanium from the silicon germanium material is then driven into the relaxed silicon semiconductor fins to produce compressive strained silicon-germanium semiconductor fins in the second substrate area (from which p-channel finFET devices are formed). The mask is removed to reveal tensile strained silicon semiconductor fins in the first substrate area (from which n-channel finFET devices are formed).

公开(公告)号：US20170005012A1

公开(公告)日：2017-01-05

申请号：US15238559

申请日：2016-08-16

Applicant: STMicroelectronics, Inc.

Inventor： Qing Liu ,  John H. Zhang

IPC: H01L21/84 ,  H01L21/265 ,  H01L21/266 ,  H01L21/308 ,  H01L29/161 ,  H01L29/06 ,  H01L29/10 ,  H01L29/66 ,  H01L29/423 ,  H01L27/12 ,  H01L27/02

CPC classification number: H01L21/845 ,  H01L21/26513 ,  H01L21/266 ,  H01L21/3081 ,  H01L27/0207 ,  H01L27/1211 ,  H01L29/0615 ,  H01L29/0649 ,  H01L29/1033 ,  H01L29/161 ,  H01L29/4236 ,  H01L29/66795

Abstract: An analog integrated circuit is disclosed in which short channel transistors are stacked on top of long channel transistors, vertically separated by an insulating layer. With such a design, it is possible to produce a high density, high power, and high performance analog integrated circuit chip including both short and long channel devices that are spaced far enough apart from one another to avoid crosstalk. In one embodiment, the transistors are FinFETs and the long channel devices are multi-gate FinFETs. In one embodiment, single and dual damascene devices are combined in a multi-layer integrated circuit cell. The cell may contain various combinations and configurations of the short and long-channel devices. A high density cell can be made by simply shrinking the dimensions of the cells and replicating two or more cells in the same size footprint as the original cell.

Abstract translation: 公开了一种模拟集成电路，其中短沟道晶体管堆叠在由绝缘层垂直分隔的长沟道晶体管的顶部。 通过这样的设计，可以生产高密度，高功率和高性能的模拟集成电路芯片，其包括彼此间隔足够远的短路和长通道设备，以避免串扰。 在一个实施例中，晶体管是FinFET，并且长沟道器件是多栅极FinFET。 在一个实施例中，将单镶嵌和双镶嵌装置组合在多层集成电路单元中。 小区可以包含短路和长通道设备的各种组合和配置。 可以通过简单地收缩细胞的尺寸并复制与原始细胞相同尺寸足迹的两个或更多个细胞来制造高密度细胞。

公开(公告)号：US09502292B2

公开(公告)日：2016-11-22

申请号：US14856949

申请日：2015-09-17

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION ,  STMicroelectronics, Inc. ,  COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Bruce B. Doris ,  Shom Ponoth ,  Prasanna Khare ,  Qing Liu ,  Nicolas Loubet ,  Maud Vinet

IPC: H01L21/336 ,  H01L21/76 ,  H01L21/20 ,  H01L21/425 ,  H01L21/768 ,  H01L21/762 ,  H01L29/06 ,  H01L29/786 ,  H01L21/02 ,  H01L29/08 ,  H01L29/417 ,  H01L29/66

CPC classification number: H01L21/76879 ,  H01L21/0217 ,  H01L21/76224 ,  H01L21/76283 ,  H01L21/76802 ,  H01L21/76877 ,  H01L21/76897 ,  H01L29/0649 ,  H01L29/0653 ,  H01L29/0847 ,  H01L29/41783 ,  H01L29/66545 ,  H01L29/6656 ,  H01L29/66568 ,  H01L29/66628 ,  H01L29/78609

Abstract: A shallow trench is formed to extend into a handle substrate of a semiconductor-on-insulator (SOI) layer. A dielectric liner stack of a dielectric metal oxide layer and a silicon nitride layer is formed in the shallow trench, followed by deposition of a shallow trench isolation fill portion. The dielectric liner stack is removed from above a top surface of a top semiconductor portion, followed by removal of a silicon nitride pad layer and an upper vertical portion of the dielectric metal oxide layer. A divot laterally surrounding a stack of a top semiconductor portion and a buried insulator portion is filled with a silicon nitride portion. Gate structures and source/drain structures are subsequently formed. The silicon nitride portion or the dielectric metal oxide layer functions as a stopping layer during formation of source/drain contact via holes, thereby preventing electrical shorts between source/drain contact via structures and the handle substrate.

公开(公告)号：US09484535B1

公开(公告)日：2016-11-01

申请号：US14960712

申请日：2015-12-07

Applicant: STMicroelectronics, Inc.

Inventor： Qing Liu ,  John Hongguang Zhang

IPC: H01L21/4763 ,  H01L45/00 ,  H01L27/24

CPC classification number: H01L27/2436 ,  H01L23/528 ,  H01L27/2463 ,  H01L45/08 ,  H01L45/1233 ,  H01L45/1253 ,  H01L45/145 ,  H01L45/146 ,  H01L45/16 ,  H01L45/1616 ,  H01L45/1633 ,  H01L45/1691

Abstract: A resistive random access memory (RRAM) structure is formed on a supporting substrate and includes a first electrode and a second electrode. The first electrode is made of a silicided fin on the supporting substrate and a first metal liner layer covering the silicided fin. A layer of dielectric material having a configurable resistive property covers at least a portion of the first metal liner. The second electrode is made of a second metal liner layer covering the layer of dielectric material and a metal fill in contact with the second metal liner layer. A non-volatile memory cell includes the RRAM structure electrically connected between an access transistor and a bit line.

Abstract translation: 在支撑衬底上形成电阻随机存取存储器（RRAM）结构，并且包括第一电极和第二电极。 第一电极由支撑衬底上的硅化物翅片和覆盖硅化物翅片的第一金属衬垫层制成。 具有可配置电阻性能的电介质材料层覆盖第一金属衬垫的至少一部分。 第二电极由覆盖电介质材料层的第二金属衬垫层和与第二金属衬垫层接触的金属填充物制成。 非易失性存储单元包括电连接在存取晶体管和位线之间的RRAM结构。

公开(公告)号：US20160300857A1

公开(公告)日：2016-10-13

申请号：US14680392

申请日：2015-04-07

Applicant: STMicroelectronics, Inc.

Inventor： Qing Liu ,  John Hongguang Zhang ,  Walter Kleemeier

IPC: H01L27/12 ,  H01L29/417 ,  H01L27/092 ,  H01L21/324 ,  H01L21/306 ,  H01L29/08 ,  H01L21/84

CPC classification number: H01L27/1211 ,  H01L21/823807 ,  H01L21/823821 ,  H01L21/845 ,  H01L27/0924 ,  H01L29/0847 ,  H01L29/1054 ,  H01L29/41783 ,  H01L29/66545

Abstract: A junctionless field effect transistor on an insulating layer of a substrate includes a fin made of semiconductor material doped with a dopant of a first conductivity type. A channel made of an epitaxial semiconductor material region doped with a dopant of a second conductivity type is in contact with a top surface of the fin. An insulated metal gate straddles the channel. A source connection is made to the epitaxial semiconductor material region on one side of said insulated metal gate, and a drain connection is made to the epitaxial semiconductor material region on an opposite side of said insulated metal gate. The epitaxial channel may further be grown from and be in contact with opposed side surfaces of the fin.

Abstract translation: 在基板的绝缘层上的无连接场效应晶体管包括由掺杂有第一导电类型的掺杂剂的半导体材料制成的鳍。 由掺杂有第二导电类型的掺杂剂的外延半导体材料区域形成的沟道与鳍片的顶表面接触。 绝缘金属门横跨通道。 源极连接到所述绝缘金属栅极的一侧上的外延半导体材料区域，并且在所述绝缘金属栅极的相对侧上的外延半导体材料区域进行漏极连接。 外延沟道还可以从翅片的相对的侧表面生长并与其接触。