公开(公告)号：US20180144974A1

公开(公告)日：2018-05-24

申请号：US15858875

申请日：2017-12-29

Applicant: Infineon Technologies AG

Inventor： Oliver Hellmund ,  Johannes Baumgartl ,  Iris Moder ,  Ingo Muri ,  Thomas Christian Neidhart ,  Hans-Joachim Schulze

IPC: H01L21/762 ,  H01L21/306 ,  H01L21/311 ,  H01L21/3105

CPC classification number: H01L21/76248 ,  H01L21/30608 ,  H01L21/30625 ,  H01L21/31053 ,  H01L21/31111 ,  H01L21/76272 ,  H01L21/76283 ,  H01L21/76898

Abstract: In accordance with an embodiment of the present invention, a method of fabricating a semiconductor device includes forming openings partially filled with a sacrificial material, where the openings extend into a semiconductor substrate from a first side. A void region is formed in a central region of the openings. An epitaxial layer is formed over the first side of the semiconductor substrate and the openings, where the epitaxial layer covers the void region. From a second side of the semiconductor substrate opposite to the first side, the semiconductor substrate is thinned to expose the sacrificial material. The sacrificial material in the openings is removed and the epitaxial layer is exposed. A conductive material is deposited on the exposed surface of the epitaxial layer.

公开(公告)号：US09954065B2

公开(公告)日：2018-04-24

申请号：US14936279

申请日：2015-11-09

Applicant: Infineon Technologies AG

Inventor： Anton Mauder ,  Frank Pfirsch ,  Hans-Joachim Schulze ,  Ingo Muri ,  Iris Moder ,  Johannes Baumgartl

IPC: H01L29/10 ,  H01L21/265 ,  H01L21/324 ,  H01L21/304 ,  H01L21/306 ,  H01L21/3205 ,  H01L27/088 ,  H01L29/66 ,  H01L29/78 ,  H01L29/417 ,  H01L29/45 ,  H01L29/739 ,  H01L29/06 ,  H01L29/08

CPC classification number: H01L29/1095 ,  H01L21/265 ,  H01L21/304 ,  H01L21/30604 ,  H01L21/30608 ,  H01L21/3065 ,  H01L21/3083 ,  H01L21/3205 ,  H01L21/324 ,  H01L27/088 ,  H01L29/0661 ,  H01L29/0834 ,  H01L29/16 ,  H01L29/1608 ,  H01L29/2003 ,  H01L29/417 ,  H01L29/45 ,  H01L29/66136 ,  H01L29/66348 ,  H01L29/66477 ,  H01L29/7397 ,  H01L29/78

Abstract: In accordance with a method of forming a semiconductor device, an auxiliary structure is formed at a first surface of a silicon semiconductor body. A semiconductor layer is formed on the semiconductor body at the first surface. Semiconductor device elements are formed at the first surface. The semiconductor body is then removed from a second surface opposite to the first surface at least up to an edge of the auxiliary structure oriented to the second surface.

公开(公告)号：US20180040504A1

公开(公告)日：2018-02-08

申请号：US15229985

申请日：2016-08-05

Applicant: Infineon Technologies AG

Inventor： Oliver Hellmund ,  Ingo Muri ,  Johannes Baumgartl ,  Iris Moder ,  Thomas Christian Neidhart ,  Hans-Joachim Schulze

IPC: H01L21/762 ,  H01L21/306 ,  H01L29/78 ,  H01L29/66 ,  H01L29/423 ,  H01L21/311 ,  H01L21/28

CPC classification number: H01L21/76248 ,  H01L21/28 ,  H01L21/30608 ,  H01L21/30625 ,  H01L21/31053 ,  H01L21/31111 ,  H01L21/76272 ,  H01L21/76283 ,  H01L21/764 ,  H01L29/4236 ,  H01L29/66666 ,  H01L29/7827

Abstract: A method of fabricating a semiconductor device includes forming trenches filled with a sacrificial material. The trenches extend into a semiconductor substrate from a first side. An epitaxial layer is formed over the first side of the semiconductor substrate and the trenches. From a second side of the semiconductor substrate opposite to the first side, the sacrificial material in the trenches is removed. The trenches are filled with a conductive material.

公开(公告)号：US20170154808A1

公开(公告)日：2017-06-01

申请号：US14953362

申请日：2015-11-29

Applicant: Infineon Technologies AG

Inventor： Iris Moder ,  Ingo Muri ,  Johannes Baumgartl ,  Oliver Hellmund ,  Manfred Engelhardt ,  Hans-Joachim Schulze

IPC: H01L21/762

CPC classification number: H01L21/76267 ,  H01L21/02238 ,  H01L21/02258 ,  H01L21/02647 ,  H01L21/2022 ,  H01L21/31144 ,  H01L21/7621 ,  H01L21/7624 ,  H01L21/76248 ,  H01L21/76264 ,  H01L21/76272 ,  H01L21/76281 ,  H01L21/76283 ,  H01L21/76286 ,  H01L21/76289 ,  H01L21/76297

Abstract: A method for fabricating a semiconductor device includes forming an opening in a first epitaxial lateral overgrowth region to expose a surface of the semiconductor substrate within the opening. The method further includes forming an insulation region at the exposed surface of the semiconductor substrate within the opening and filling the opening with a second semiconductor material to form a second epitaxial lateral overgrowth region using a lateral epitaxial growth process.

公开(公告)号：US20170148664A1

公开(公告)日：2017-05-25

申请号：US14946886

申请日：2015-11-20

Applicant: Infineon Technologies AG

Inventor： Roland Rupp ,  Hans-Joachim Schulze ,  Francisco Javier Santos Rodriguez ,  Iris Moder ,  Ingo Muri

IPC: H01L21/762 ,  H01L21/265 ,  H01L21/306

CPC classification number: H01L21/76243 ,  H01L21/02005 ,  H01L21/26533 ,  H01L21/304 ,  H01L21/30604 ,  H01L21/30608 ,  H01L21/30625 ,  H01L21/324 ,  H01L21/7806

Abstract: According to various embodiments, a method may include: providing a substrate having a first side and a second side opposite the first side; forming a buried layer at least one of in or over the substrate by processing the first side of the substrate; thinning the substrate from the second side of the substrate, wherein the buried layer includes a solid state compound having a greater resistance to the thinning than the substrate and wherein the thinning stops at the buried layer.