University of Electronic Science and Technology of China

Institute of Electronic and Information Engineering in Dongguan, Uestc

Gaochao Xu

Bo Zhang

Zehong Li

Jinping Zhang

Min Ren

Jingxiu Liu

Xin Yao

Yadong Shan

A bidirectional IGBT device, including a cellular structure including: two MOS structures, a substrate drift layer, two highly doped buried layers operating for carrier storage or field stop, two metal electrodes, and isolating dielectrics. Each MOS structure includes: a body region, a heavily doped source region, a body contact region, and a gate structure. Each gate structure includes: a gate dielectric and a gate conductive material. The two MOS structures are symmetrically disposed on the top surface and the back surface of the substrate drift layer. The heavily doped source region and the body contact region are disposed in the body region and independent from each other, and both surfaces of the heavily doped source region and the body contact region are connected to each of the two metal electrodes. The gate dielectric separates the gate conductive material from a channel region of each of the MOS structures.

Bidirectional insulated gate bipolar transistor

Growing community of inventors

Chengdu, China

Gaochao Xu