Patent ID: 9607839
Date: 2017-03-28
CPC Classifications: H01L

Claim:
1. An N-type Lateral Diffused Metal-Oxide-Semiconductor (NLDMOS) transistor, comprising: a P-type substrate; a semiconductor layer having a deep N-type well region formed on the P-type substrate; at least a first P-type body region and an N-type drift region formed in the deep N-type well region; a second P-type body formed in the deep N-type well region, with the N-type drift region in between the first P-type body region and the second P-type body region; an N-type heavily doped drain region formed in the N-type drift region; and a P-type doped reverse type region physically connected with the P-type body region and preventing carriers from escaping between the N-type source region and external devices formed below the N-type drift region.