Infineon Technologies Ag

Alparslan Takkac

Alexander Herbrandt

Andre Arens

Regina Nottelmann

Ulrich Michael Georg Schwarzer

Michal Chajneta

Till Neddermann

Michael Ebli

Barbara Eichinger

Marian Sebastian Broll

A method of welding includes providing first and second joining partners, providing a welding apparatus that includes a sonotrode comprising a structured working surface, arranging the first and second joining partners to contact one another, and forming a welded connection between the first and second joining partners by contacting the first joining partner with the structured working surface and vibrating the sonotrode at an ultrasonic frequency, wherein the structured working surface comprises a plurality of apexes, a plurality of nadirs between immediately adjacent ones of the apexes, and planar sidewalls that extend between the nadirs and the apexes, and wherein for each of the apexes the planar sidewalls on either side of the respective apex extend along first and second planes that intersect one another at an acute angle.

Ultrasonic welding device

A method for producing a power semiconductor module arrangement includes: arranging at least one semiconductor substrate in a housing, each semiconductor substrate including a first metallization layer attached to a dielectric insulation layer, the housing including a through hole extending through a component of the housing; inserting a fastener into the through hole such that an upper portion of the fastener is not inserted into the through hole; arranging a printed circuit board on the housing; arranging the housing on a mounting surface, the mounting surface comprising a hole, wherein the housing is arranged on the mounting surface such that the through hole is aligned with the hole in the mounting surface; and exerting a force on the printed circuit board such that the force causes the fastener to be pressed into the hole in the mounting surface so as to secure the housing to the mounting surface.

Power semiconductor module arrangement and method for producing a power semiconductor module arrangement

An ultrasonic welding apparatus includes a sonotrode comprising a structured working surface that comprises a plurality of apexes, a plurality of nadirs between immediately adjacent ones of the apexes, and planar sidewalls that extend between the nadirs and the apexes, and for each of the apexes the planar sidewalls on either side of the respective apex extend along first and second planes that intersect one another at an acute angle.

A method of forming a semiconductor device includes providing a carrier comprising a die attach pad, providing a semiconductor die that includes a bond pad disposed on a main surface of the semiconductor die, and providing a metal interconnect element, arranging the semiconductor die on the die attach pad such that the bond pad faces away from the die attach pad, and welding the metal interconnect element to the bond pad, wherein the bond pad comprises first and second metal layers, wherein the second metal layer is disposed between the first metal layer and a semiconductor body of the semiconductor die, wherein a thickness of the first metal layer is greater than a thickness of the second metal layer, and wherein the first metal layer has a different metal composition as the second metal layer.

High density and durable semiconductor device interconnect

A method for producing a power semiconductor module arrangement includes: arranging a semiconductor substrate in a housing, the housing including a through hole extending through a component of the housing; inserting a pin or bolt into the through hole such that an upper end of the pin/bolt is not inserted into the through hole; arranging a printed circuit board on the housing; arranging the housing on a heat sink having a hole, the housing being arranged on the heat sink such that the through hole is aligned with the hole in the heat sink; and by way of a first pressing tool, exerting a force on a defined contact area of the printed circuit board and pressing the pin/bolt into the hole in the heat sink, wherein the defined contact area is arranged directly above the pin/bolt.

Growing community of inventors

Meschede, Germany

Alparslan Takkac