公开(公告)号：US10134603B2

公开(公告)日：2018-11-20

申请号：US15273303

申请日：2016-09-22

Applicant: Infineon Technologies AG

Inventor： Albert Birner ,  Helmut Brech

IPC: H01L21/3105 ,  H01L29/205 ,  H01L29/20 ,  H01L21/02 ,  H01L29/778 ,  H01L29/66

Abstract: In an embodiment, a method of planarizing a surface includes applying a first layer to a surface including a protruding region including at least one compound semiconductor and a stop layer on an upper surface such that the first layer covers the surface and the protruding region, removing a portion of the first layer above the protruding region and forming an indentation in the first layer above the protruding region, the protruding region remaining covered by material of the first layer, and progressively removing an outermost surface of the first layer to produce a planarized surface including the stop layer on the upper surface of the protruding region and an outer surface of the first layer.

公开(公告)号：US20180277501A1

公开(公告)日：2018-09-27

申请号：US15986433

申请日：2018-05-22

Applicant: Infineon Technologies AG

Inventor： Helmut Brech ,  Albert Birner ,  Matthias Zigldrum ,  Michaela Braun ,  Jan Ropohl

IPC: H01L23/66 ,  H01L49/02 ,  H01L23/48 ,  H03F3/193 ,  H01L29/78 ,  H01L21/768 ,  H03F3/21 ,  H01L23/522

CPC classification number: H01L23/66 ,  H01L21/7682 ,  H01L21/76898 ,  H01L23/481 ,  H01L23/522 ,  H01L28/10 ,  H01L28/20 ,  H01L28/40 ,  H01L29/7816 ,  H01L2223/6616 ,  H01L2223/6644 ,  H01L2223/6655 ,  H01L2223/6683 ,  H03F3/193 ,  H03F3/21 ,  H03F2200/222 ,  H03F2200/411

Abstract: In an embodiment, a method includes forming a first opening in a front surface of a semiconductor substrate including a LDMOS transistor structure, and covering the first opening with a first layer to form an enclosed cavity defined by material of the semiconductor substrate and the first layer. The material of the first layer lines sidewalls of the enclosed cavity.

公开(公告)号：US20180269279A1

公开(公告)日：2018-09-20

申请号：US15986942

申请日：2018-05-23

Applicant: Infineon Technologies AG

Inventor： Albert Birner ,  Helmut Brech ,  Matthias Zigldrum ,  Michaela Braun ,  Christian Eckl

IPC: H01L29/06 ,  H01L29/40 ,  H01L29/78 ,  H03F3/193 ,  H01L21/768 ,  H03F1/02

CPC classification number: H01L29/063 ,  H01L21/26513 ,  H01L21/76877 ,  H01L21/76898 ,  H01L23/481 ,  H01L23/5283 ,  H01L29/0847 ,  H01L29/1045 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/404 ,  H01L29/4175 ,  H01L29/66681 ,  H01L29/7816 ,  H01L29/7823 ,  H01L29/7835 ,  H03F1/0288 ,  H03F3/193 ,  H03F2200/451

Abstract: In an embodiment, a semiconductor device includes a semiconductor substrate having a bulk resistivity ρ≥100 Ohm.cm, a front surface and a rear surface. An LDMOS transistor is arranged in the semiconductor substrate. A RESURF structure including a doped buried layer is arranged in the semiconductor substrate. The LDMOS transistor includes a body contact region doped with a first conductivity type, and a source region disposed in the body contact region and doped with a second conductivity type opposite the first conductivity type. The source region includes a first well and a second well of the same second conductivity type. The first well is more highly doped than the second well. The first well extends from inside the body contact region to outside of a lateral extent of the body contact region in a direction towards a source side of a gate of the LDMOS transistor.

公开(公告)号：US20180261534A1

公开(公告)日：2018-09-13

申请号：US15981662

申请日：2018-05-16

Applicant: Infineon Technologies AG

Inventor： Helmut Brech ,  Albert Birner

IPC: H01L23/498 ,  H01L29/08 ,  H01L23/48 ,  H01L21/768 ,  H01L29/73 ,  H01L29/417 ,  H01L27/12 ,  H01L21/8234

CPC classification number: H01L23/49827 ,  H01L21/76898 ,  H01L21/823431 ,  H01L23/481 ,  H01L27/1211 ,  H01L29/0804 ,  H01L29/0821 ,  H01L29/41758 ,  H01L29/41766 ,  H01L29/73 ,  H01L2924/0002 ,  H01L2924/00

Abstract: In accordance with an embodiment of the present invention, a semiconductor chip includes a device region disposed in or over a substrate, a doped region disposed in the device region, and a through via disposed in the substrate. The through via extends through the doped region.

公开(公告)号：US10050139B2

公开(公告)日：2018-08-14

申请号：US15191937

申请日：2016-06-24

Applicant: Infineon Technologies AG

Inventor： Albert Birner ,  Helmut Brech ,  Matthias Zigldrum ,  Michaela Braun ,  Jan Ropohl

IPC: H01L29/78 ,  H01L29/66 ,  H01L29/10 ,  H01L23/522 ,  H01L23/532 ,  H01L23/528 ,  H01L21/768

Abstract: In an embodiment, a semiconductor device includes a semiconductor substrate having a front surface, a LDMOS transistor in the front surface, and a metallization structure arranged on the front surface. The metallization structure includes at least one cavity arranged in at least one dielectric layer.

公开(公告)号：US20170373137A1

公开(公告)日：2017-12-28

申请号：US15191854

申请日：2016-06-24

Applicant: Infineon Technologies AG

Inventor： Albert Birner ,  Helmut Brech ,  Matthias Zigldrum ,  Michaela Braun ,  Christian Eckl

IPC: H01L29/06 ,  H01L29/66 ,  H01L29/10 ,  H01L23/528 ,  H01L21/768 ,  H01L29/78 ,  H01L21/265

CPC classification number: H01L29/063 ,  H01L21/26513 ,  H01L21/76877 ,  H01L21/76898 ,  H01L23/481 ,  H01L23/5283 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/66681 ,  H01L29/7816 ,  H01L29/7823 ,  H03F1/0288 ,  H03F3/193 ,  H03F2200/451

Abstract: In an embodiment, a semiconductor device includes a semiconductor substrate having a bulk resistivity ρ≧100 Ohm.cm, a front surface and a rear surface, at least one LDMOS transistor in the semiconductor substrate, and a RESURF structure. The RESURF structure includes a doped buried layer arranged in the semiconductor substrate, spaced at a distance from the front surface and the rear surface, and coupled with at least one of a channel region and a body contact region of the LDMOS transistor.