Patent ID: 9214549
Filing Date: 2015-12-15
Classification: H01L

Abstract:
1. A high voltage device having Schottky diode comprising: a semiconductor substrate; a Schottky diode formed on the semiconductor substrate; a first doped region having a first conductive type formed under the Schottky diode in the semiconductor substrate; a control gate covering a portion of the Schottky diode and the first doped region on the semiconductor substrate; a dielectric region formed in the semiconductor substrate, and the control gate covering a portion of the dielectric region; a salicide block (SAB) formed on the semiconductor substrate covering a portion of the first doped region, the Schottky diode is positioned between the control gate and the SAB; and a well region having a second conductive type formed in the semiconductor substrate and the dielectric region, the Schottky diode and the first doped region are formed in the well region and a portion of the well region is in between the first doped region and the dielectric region.