Patent ID: 8063446

Claim:
A lateral diffused MOS device comprising: a buried layer formed in a first conductive type substrate and doped with a second conductive type impurity; a first well formed in the buried layer and doped with the first conductive type impurity; a field insulator formed on a surface of the first well; a gate insulating layer formed on a surface of the first well at both sides of the field insulator; a second well formed in the first well at one side of the field insulator and doped with the first conductive type impurity; a source region formed in a surface of the second well; a drain region isolated from the source region and formed in the surface of the first well at the other side of the field insulator; a gate electrode formed on the gate insulating layer on the source region; a first field plate formed on a predetermined portion of the field insulator and connected with the gate electrode; and a second field plate formed on another predetermined portion of the field insulator and spaced apart by a predetermined spacing from the first field plate.