公开(公告)号：US09704852B2

公开(公告)日：2017-07-11

申请号：US15140516

申请日：2016-04-28

Applicant: GLOBALFOUNDRIES INC.

Inventor： Robert J. Gauthier, Jr. ,  Tom C. Lee ,  You Li ,  Rahul Mishra ,  Souvick Mitra ,  Andreas Scholze

IPC: H01L29/66 ,  H01L29/15 ,  H01L27/088 ,  H01L27/02 ,  H01L27/06 ,  H01L29/78 ,  H01L29/06 ,  H01L29/423

CPC classification number: H01L27/0255 ,  H01L27/0266 ,  H01L27/027 ,  H01L27/0288 ,  H01L27/0629 ,  H01L29/0649 ,  H01L29/0684 ,  H01L29/42372 ,  H01L29/7827 ,  H01L29/785 ,  H01L29/7855 ,  H01L2029/7858

Abstract: Field effect diode structures utilize a junction structure that has an L-shape in cross-section (a fin extending from a planar portion). An anode is positioned at the top surface of the fin, and a cathode is positioned at the end surface of the planar portion. The perpendicularity of the fin and the planar portion cause the anode and cathode to be perpendicular to one another. A first gate insulator contacts the fin between the top surface and the planar portion. A first gate conductor contacts the first gate insulator, and the first gate insulator is between the first gate conductor and the surface of the fin. Additionally, a second gate insulator contacts the planar portion between the end surface and the fin. A second gate conductor contacts the second gate insulator, and the second gate insulator is between the second gate conductor and the surface of the planar portion.

公开(公告)号：US20160197080A1

公开(公告)日：2016-07-07

申请号：US15067307

申请日：2016-03-11

Applicant: GlobalFoundries Inc.

Inventor： John B. Campi, JR. ,  Robert J. Gauthier, JR. ,  Junjun Li ,  Rahul Mishra ,  Souvick Mitra ,  Mujahid Muhammad

IPC: H01L27/092 ,  H01L29/78 ,  H01L29/10 ,  H01L29/06 ,  H01L29/08

CPC classification number: H01L27/0928 ,  H01L21/761 ,  H01L21/823814 ,  H01L21/823892 ,  H01L27/092 ,  H01L29/0634 ,  H01L29/0653 ,  H01L29/0692 ,  H01L29/0878 ,  H01L29/1045 ,  H01L29/1087 ,  H01L29/1095 ,  H01L29/66659 ,  H01L29/66681 ,  H01L29/7801 ,  H01L29/7816 ,  H01L29/7835

Abstract: Disclosed are semiconductor structures. Each semiconductor structure can comprise a substrate and at least one laterally double-diffused metal oxide semiconductor field effect transistor (LDMOSFET) on the substrate. Each LDMOSFET can have a fully-depleted deep drain drift region (i.e., a fully depleted deep ballast resistor region) for providing a relatively high blocking voltage. Different configurations for the drain drift regions are disclosed and these different configurations can also vary as a function of the conductivity type of the LDMOSFET. Additionally, each semiconductor structure can comprise an isolation band positioned below the LDMOSFET and an isolation well positioned laterally around the LDMOSFET and extending vertically to the isolation band such that the LDMOSFET is electrically isolated from both a lower portion of the substrate and any adjacent devices on the substrate.

公开(公告)号：US20160379972A1

公开(公告)日：2016-12-29

申请号：US15140516

申请日：2016-04-28

Applicant: GLOBALFOUNDRIES INC.

Inventor： Robert J. Gauthier, JR. ,  Tom C. Lee ,  You Li ,  Rahul Mishra ,  Souvick Mitra ,  Andreas Scholze

IPC: H01L27/02 ,  H01L29/78 ,  H01L29/423 ,  H01L29/06

CPC classification number: H01L27/0255 ,  H01L27/0266 ,  H01L27/027 ,  H01L27/0288 ,  H01L27/0629 ,  H01L29/0649 ,  H01L29/0684 ,  H01L29/42372 ,  H01L29/7827 ,  H01L29/785 ,  H01L29/7855 ,  H01L2029/7858

Abstract: Field effect diode structures utilize a junction structure that has an L-shape in cross-section (a fin extending from a planar portion). An anode is positioned at the top surface of the fin, and a cathode is positioned at the end surface of the planar portion. The perpendicularity of the fin and the planar portion cause the anode and cathode to be perpendicular to one another. A first gate insulator contacts the fin between the top surface and the planar portion. A first gate conductor contacts the first gate insulator, and the first gate insulator is between the first gate conductor and the surface of the fin. Additionally, a second gate insulator contacts the planar portion between the end surface and the fin. A second gate conductor contacts the second gate insulator, and the second gate insulator is between the second gate conductor and the surface of the planar portion.

Abstract translation: 场效应二极管结构使用横截面为L形的接合结构（从平面部分延伸的翅片）。 阳极位于翅片的顶面，阴极位于平面部分的端面。 翅片和平面部分的垂直度导致阳极和阴极彼此垂直。 第一栅极绝缘体在顶表面和平面部分之间接触翅片。 第一栅极导体接触第一栅极绝缘体，并且第一栅极绝缘体位于第一栅极导体和鳍的表面之间。 另外，第二栅极绝缘体接触端面和鳍之间的平面部分。 第二栅极导体与第二栅极绝缘体接触，第二栅极绝缘体位于第二栅极导体与平面部分的表面之间。

公开(公告)号：US10727327B2

公开(公告)日：2020-07-28

申请号：US15882053

申请日：2018-01-29

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Rahul Mishra ,  Vibhor Jain ,  Ajay Raman ,  Robert J. Gauthier

IPC: H01L29/749 ,  H01L29/66 ,  H01L29/74 ,  H01L27/02 ,  H01L29/737

Abstract: Fabrication methods and device structures for a silicon controlled rectifier. A cathode is arranged over a top surface of a substrate and a well is arranged beneath the top surface of the substrate. The cathode is composed of a semiconductor material having a first conductivity type, and the well also has the first conductivity type. A semiconductor layer, which has a second conductivity type opposite to the first conductivity type, includes a section over the top surface of the substrate. The section of the semiconductor layer is arranged to form an anode that adjoins the well along a junction.

公开(公告)号：US20170229443A1

公开(公告)日：2017-08-10

申请号：US15497924

申请日：2017-04-26

Applicant: GLOBALFOUNDRIES INC.

Inventor： Robert J. Gauthier, JR. ,  Tom C. Lee ,  You Li ,  Rahul Mishra ,  Souvick Mitra ,  Andreas Scholze

IPC: H01L27/02 ,  H01L29/06 ,  H01L29/78 ,  H01L27/06

CPC classification number: H01L27/0255 ,  H01L27/0266 ,  H01L27/027 ,  H01L27/0288 ,  H01L27/0629 ,  H01L29/0649 ,  H01L29/0684 ,  H01L29/42372 ,  H01L29/7827 ,  H01L29/785 ,  H01L29/7855 ,  H01L2029/7858

Abstract: Field effect diode structures utilize a junction structure that has an L-shape in cross-section (a fin extending from a planar portion). An anode is positioned at the top surface of the fin, and a cathode is positioned at the end surface of the planar portion. The perpendicularity of the fin and the planar portion cause the anode and cathode to be perpendicular to one another. A first gate insulator contacts the fin between the top surface and the planar portion. A first gate conductor contacts the first gate insulator, and the first gate insulator is between the first gate conductor and the surface of the fin. Additionally, a second gate insulator contacts the planar portion between the end surface and the fin. A second gate conductor contacts the second gate insulator, and the second gate insulator is between the second gate conductor and the surface of the planar portion.

公开(公告)号：US20190237568A1

公开(公告)日：2019-08-01

申请号：US15882053

申请日：2018-01-29

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Rahul Mishra ,  Vibhor Jain ,  Ajay Raman ,  Robert J. Gauthier

IPC: H01L29/749 ,  H01L29/66 ,  H01L29/74

Abstract: Fabrication methods and device structures for a silicon controlled rectifier. A cathode is arranged over a top surface of a substrate and a well is arranged beneath the top surface of the substrate. The cathode is composed of a semiconductor material having a first conductivity type, and the well also has the first conductivity type. A semiconductor layer, which has a second conductivity type opposite to the first conductivity type, includes a section over the top surface of the substrate. The section of the semiconductor layer is arranged to form an anode that adjoins the well along a junction.

公开(公告)号：US10297589B2

公开(公告)日：2019-05-21

申请号：US15497924

申请日：2017-04-26

Applicant: GLOBALFOUNDRIES INC.

Inventor： Robert J. Gauthier, Jr. ,  Tom C. Lee ,  You Li ,  Rahul Mishra ,  Souvick Mitra ,  Andreas Scholze

IPC: H01L27/02 ,  H01L27/06 ,  H01L29/78 ,  H01L29/06 ,  H01L29/423

Abstract: Field effect diode structures utilize a junction structure that has an L-shape in cross-section (a fin extending from a planar portion). An anode is positioned at the top surface of the fin, and a cathode is positioned at the end surface of the planar portion. The perpendicularity of the fin and the planar portion cause the anode and cathode to be perpendicular to one another. A first gate insulator contacts the fin between the top surface and the planar portion. A first gate conductor contacts the first gate insulator, and the first gate insulator is between the first gate conductor and the surface of the fin. Additionally, a second gate insulator contacts the planar portion between the end surface and the fin. A second gate conductor contacts the second gate insulator, and the second gate insulator is between the second gate conductor and the surface of the planar portion.