公开(公告)号：US20190206717A1

公开(公告)日：2019-07-04

申请号：US15861799

申请日：2018-01-04

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Xuelian Zhu ,  Jia Zeng ,  Chenchen Wang ,  Jongwook Kye

IPC: H01L21/768 ,  H01L21/48

CPC classification number: H01L21/768 ,  H01L21/4857

Abstract: Methods of patterning metallization lines having variable widths in a metallization layer. A first mandrel layer is formed over a mask layer, with the mask layer overlying a second mandrel layer. The first mandrel layer is etched to form mandrel lines that have variable widths. The first non-mandrel trenches are etched in the mask layer, where the non-mandrel trenches have variable widths. The first mandrel lines are used to etch mandrel trenches in the mask layer, so that the mandrel lines and first non-mandrel lines define a mandrel pattern. The second mandrel layer is etched according to the mandrel pattern to form second mandrel lines, with the second mandrel lines having the variable widths of the plurality of first mandrel lines and the variable widths of the plurality of non-mandrel trenches.

公开(公告)号：US20170263506A1

公开(公告)日：2017-09-14

申请号：US15067953

申请日：2016-03-11

Applicant: GLOBALFOUNDRIES INC.

Inventor： Guillaume Bouche ,  Tuhin Guha Neogi ,  Andy Chi-Hung Wei ,  Jia Zeng ,  Jongwook Kye ,  Jason Eugene Stephens ,  Irene Yuh-Ling Lin ,  Sudharshanan Raghunathan ,  Lei Yuan

IPC: H01L21/8238 ,  H01L21/768 ,  G06F17/50 ,  H01L21/027 ,  H01L27/092 ,  H01L23/535 ,  H01L21/8234 ,  H01L21/285

CPC classification number: H01L21/823871 ,  G06F17/5072 ,  H01L21/027 ,  H01L21/28518 ,  H01L21/76897 ,  H01L21/823431 ,  H01L21/823475 ,  H01L21/823821 ,  H01L23/535 ,  H01L27/0886 ,  H01L27/0924

Abstract: At least one method, apparatus and system disclosed herein for forming a finFET device having a pass-through structure. A first gate structure and a second gate structure are formed on a semiconductor wafer. A first active area is formed on one end of the first and second gate structures. A second active area is formed on the other end of the first and second gate structures. A trench silicide (TS) structure self-aligned to the first and second gate structures is formed. The TS structure is configured to operatively couple the first active area to the second active area.

公开(公告)号：US09679809B1

公开(公告)日：2017-06-13

申请号：US15077564

申请日：2016-03-22

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Jongwook Kye ,  Yan Wang ,  Chenchen Wang ,  Wenhui Wang ,  Lei Yuan ,  Jia Zeng ,  Guillaume Bouche

IPC: H01L21/768 ,  H01L21/311 ,  H01L21/28 ,  H01L45/00

CPC classification number: H01L21/28141 ,  H01L21/31111 ,  H01L21/31144 ,  H01L21/76816 ,  H01L45/1691

Abstract: A method of forming a pattern for interconnect lines in an integrated circuit includes providing a structure having a first lithographic stack, a mandrel layer and a pattern layer disposed over a dielectric stack. Patterning the structure to form mandrels in the mandrel layer and disposing a spacer layer over the mandrels. Etching the spacer layer to form spacers disposed on sidewalls of the mandrels. The spacers and mandrels defining beta and gamma regions. A beta region includes a beta block mask portion and a gamma region includes a gamma block mask portion of the pattern layer. The method also includes etching a beta pillar over the beta block mask portion and etching a gamma pillar over the gamma block mask portion. The method also includes etching the structure to form a pattern in the pattern layer, the pattern including the gamma and beta block mask portions.

公开(公告)号：US20200159105A1

公开(公告)日：2020-05-21

申请号：US16191589

申请日：2018-11-15

Applicant: GLOBALFOUNDRIES INC.

Inventor： Jia Zeng ,  Guillaume Bouche ,  Lei Sun ,  Geng Han

IPC: G03F1/24 ,  H01L21/033 ,  H01L21/308 ,  H01L21/3213 ,  H01L21/311

Abstract: Methods pattern a sacrificial material on an etch mask into mandrels using optical mask lithography, form a conformal material and a fill material on the mandrels, and planarize the fill material to the level of the conformal material. Such methods pattern the fill material into first mask features using extreme ultraviolet (EUV) lithography. These methods partially remove the conformal material to leave the conformal material on the sidewalls of the mandrels as second mask features. Spaces between the first mask features and the second mask features define an etching pattern. The spacing distance of the mandrels is larger than the spacing distance of the second mask features. Such methods transfer the etching pattern into the etch mask material, and subsequently transfer the etching pattern into an underlying layer. Openings in the underlying layer are filled with a conductor to form wiring in the etching pattern.

公开(公告)号：US10559503B2

公开(公告)日：2020-02-11

申请号：US15728445

申请日：2017-10-09

Applicant: GLOBALFOUNDRIES INC.

Inventor： Guillaume Bouche ,  Tuhin Guha Neogi ,  Andy Chi-Hung Wei ,  Jia Zeng ,  Jongwook Kye ,  Jason Eugene Stephens ,  Irene Yuh-Ling Lin ,  Sudharshanan Raghunathan ,  Lei Yuan

IPC: H01L21/00 ,  H01L21/8238 ,  H01L21/8234 ,  H01L21/027 ,  H01L27/092 ,  G06F17/50 ,  H01L21/768 ,  H01L27/088

Abstract: At least one method, apparatus and system disclosed herein for forming a finFET device having a pass-through structure. A first gate structure and a second gate structure are formed on a semiconductor wafer. A first active area is formed on one end of the first and second gate structures. A second active area is formed on the other end of the first and second gate structures. A trench silicide (TS) structure self-aligned to the first and second gate structures is formed. The TS structure is configured to operatively couple the first active area to the second active area.

公开(公告)号：US10418484B1

公开(公告)日：2019-09-17

申请号：US15920748

申请日：2018-03-14

Applicant: GLOBALFOUNDRIES INC.

Inventor： Ruilong Xie ,  Lars Liebmann ,  Edward J. Nowak ,  Julien Frougier ,  Jia Zeng

IPC: H01L29/78 ,  H01L21/8238 ,  H01L27/092 ,  H01L29/08 ,  H01L29/10 ,  H01L29/423 ,  H01L21/02 ,  H01L21/311 ,  H01L21/3105 ,  H01L21/8234 ,  H01L21/822 ,  H01L21/8232 ,  H01L27/112 ,  H01L27/24 ,  H01L29/66 ,  H01L27/11582 ,  H01L27/11556 ,  H01L29/786

Abstract: Disclosed is a semiconductor structure that includes a vertical field effect transistor (VFET) with a U-shaped semiconductor body. The semiconductor structure can be a standard VFET or a feedback VFET. In either case, the VFET includes a lower source/drain region, a semiconductor body on the lower source/drain region, and an upper source/drain region on the top of the semiconductor body. Rather than having an elongated fin shape, the semiconductor body folds back on itself in the Z direction so as to be essentially U-shaped (as viewed from above). Using a U-shaped semiconductor body reduces the dimension of the VFET in the Z direction without reducing the end-to-end length of the semiconductor body. Thus, VFET cell height can be reduced without reducing device drive current or violating critical design rules. Also disclosed is a method of forming a semiconductor structure that includes such a VFET with a U-shaped semiconductor body.

公开(公告)号：US10056373B2

公开(公告)日：2018-08-21

申请号：US15490702

申请日：2017-04-18

Applicant: GLOBALFOUNDRIES INC.

Inventor： Andy Chih-Hung Wei ,  Guillaume Bouche ,  Mark A. Zaleski ,  Tuhin Guha Neogi ,  Jason E. Stephens ,  Jongwook Kye ,  Jia Zeng

IPC: H01L29/94 ,  H01L27/088 ,  H01L23/528 ,  H01L23/532 ,  H01L27/092 ,  H01L21/8234 ,  H01L21/8238

CPC classification number: H01L27/088 ,  H01L21/02164 ,  H01L21/0217 ,  H01L21/28568 ,  H01L21/76834 ,  H01L21/76895 ,  H01L21/76897 ,  H01L21/823475 ,  H01L21/823871 ,  H01L21/823878 ,  H01L23/528 ,  H01L23/53228 ,  H01L23/53257 ,  H01L23/5329 ,  H01L27/092 ,  H01L29/41725 ,  H01L29/41758 ,  H01L29/66462 ,  H01L29/78 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Embodiments of the present invention provide an improved semiconductor structure and methods of fabrication that provide transistor contacts that are self-aligned in two dimensions. Two different capping layers are used, each being comprised of a different material. The two capping layers are selectively etchable to each other. One capping layer is used for gate coverage while the other capping layer is used for source/drain coverage. Selective etch processes open the desired gates and source/drains, while block masks are used to cover elements that are not part of the connection scheme. A metallization line (layer) is deposited, making contact with the open elements to provide electrical connectivity between them.

公开(公告)号：US10014297B1

公开(公告)日：2018-07-03

申请号：US15589312

申请日：2017-05-08

Applicant: GLOBALFOUNDRIES INC.

Inventor： Lei Sun ,  Wenhui Wang ,  Xunyuan Zhang ,  Ruilong Xie ,  Jia Zeng ,  Xuelian Zhu ,  Min Gyu Sung ,  Shao Beng Law

IPC: H01L27/088 ,  H01L29/66 ,  H01L21/027 ,  H01L21/8234

CPC classification number: H01L27/0886 ,  H01L21/0337 ,  H01L21/823431 ,  H01L29/6681

Abstract: One aspect of the disclosure is directed to a method of forming an integrated circuit structure. The method may include: providing a set of fins over a semiconductor substrate, the set of fins including a plurality of working fins and a plurality of dummy fins, the plurality of dummy fins including a first subset of dummy fins within a pre-defined distance from any of the plurality of working fins, and a second subset of dummy fins beyond the pre-defined distance from any of the plurality of working fins; removing the first subset of dummy fins by an extreme ultraviolet (EUV) lithography technique; and removing at least a portion of the second subset of dummy fins.

公开(公告)号：US20180182675A1

公开(公告)日：2018-06-28

申请号：US15389632

申请日：2016-12-23

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Jia Zeng ,  Wenhui Wang ,  Xuelian Zhu ,  Jongwook Kye

IPC: H01L21/84 ,  H01L23/528 ,  H01L27/12 ,  H01L23/532

CPC classification number: H01L21/845 ,  H01L21/76895 ,  H01L21/76897 ,  H01L21/823431 ,  H01L21/823468 ,  H01L21/823475 ,  H01L23/485 ,  H01L23/5283 ,  H01L23/5286 ,  H01L27/0886 ,  H01L27/1211

Abstract: The disclosure relates to integrated circuit (IC) structures with substantially T-shaped wires, and methods of forming the same. An IC structure according to the present disclosure can include a first substantially T-shaped wire including a first portion extending in a first direction, and a second portion extending in a second direction substantially perpendicular to the first direction; an insulator laterally abutting the first substantially T-shaped wire at an end of the first portion, opposite the second portion; and a pair of gates each extending in the first direction and laterally abutting opposing sidewalls of the insulator and the first portion of the substantially T-shaped wire.

公开(公告)号：US09660040B2

公开(公告)日：2017-05-23

申请号：US14926657

申请日：2015-10-29

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Andy Chih-Hung Wei ,  Guillaume Bouche ,  Mark A. Zaleski ,  Tuhin Guha Neogi ,  Jason E. Stephens ,  Jongwook Kye ,  Jia Zeng

IPC: H01L29/94 ,  H01L29/417 ,  H01L21/768 ,  H01L27/088 ,  H01L21/8234 ,  H01L23/532 ,  H01L21/02 ,  H01L21/285 ,  H01L21/8238 ,  H01L27/092 ,  H01L29/66 ,  H01L29/78

CPC classification number: H01L27/088 ,  H01L21/02164 ,  H01L21/0217 ,  H01L21/28568 ,  H01L21/76834 ,  H01L21/76895 ,  H01L21/76897 ,  H01L21/823475 ,  H01L21/823871 ,  H01L21/823878 ,  H01L23/528 ,  H01L23/53228 ,  H01L23/53257 ,  H01L23/5329 ,  H01L27/092 ,  H01L29/41725 ,  H01L29/41758 ,  H01L29/66462 ,  H01L29/78 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Embodiments of the present invention provide an improved semiconductor structure and methods of fabrication that provide transistor contacts that are self-aligned in two dimensions. Two different capping layers are used, each being comprised of a different material. The two capping layers are selectively etchable to each other. One capping layer is used for gate coverage while the other capping layer is used for source/drain coverage. Selective etch processes open the desired gates and source/drains, while block masks are used to cover elements that are not part of the connection scheme. A metallization line (layer) is deposited, making contact with the open elements to provide electrical connectivity between them.