Patent ID: 11869794
Assignee: LAM RESEARCH CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A substrate support for a plasma chamber, comprising:
a base plate;
a first layer arranged on the base plate, the first layer having a first electrical contact and a second electrical contact and being made of an electrical insulating material;
a plurality of heating elements arranged in the first layer; and
a plurality of diodes arranged in respective cavities in the first layer, the plurality of diodes connected in series to the plurality of heating elements, respectively;
wherein each of the plurality of diodes comprises a die of a semiconductor material arranged in the corresponding cavity, the semiconductor material having a first coefficient of thermal expansion, and the die having a first terminal on a first side of the die and a second terminal on a second side of the die that is opposite to the first side, the first side of the die arranged on the first layer along a plane, the first terminal of the die connected to the first electrical contact; and
wherein for each of the plurality of diodes, the corresponding cavity further comprises a conductor having a second coefficient of thermal expansion that is greater than the first coefficient of thermal expansion, having a first end connected to the second terminal of the die, having a second end connected to the second electrical contact, and having a first portion adjacent to the first end that deflects away from the second side of the die at an acute angle relative to the plane.