Invention Grant
- Patent Title: High-voltage integrated circuit device
- Patent Title (中): 高压集成电路器件
-
Application No.: US13738652Application Date: 2013-01-10
-
Publication No.: US08633563B2Publication Date: 2014-01-21
- Inventor: Masaharu Yamaji
- Applicant: Fuji Electric Co., Ltd.
- Applicant Address: JP
- Assignee: Fuji Electric Co., Ltd.
- Current Assignee: Fuji Electric Co., Ltd.
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2011-056577 20110315
- Main IPC: H01L21/76
- IPC: H01L21/76

Abstract:
A high-voltage integrated circuit device can include, in a surface layer of a p semiconductor substrate, an n region which is a high-side floating-potential region, an n− region which becomes a high-voltage junction terminating region, and an n− region which is an L-VDD potential region. A low-side circuit portion can be disposed in an n− region. Below a pickup electrode disposed in the high-voltage junction terminating region, a universal contact region in Ohmic contact with the pickup electrode can be disposed. The universal contact region has a p+ region and an n+ region that can be disposed in alternating contact along a surface of the p semiconductor substrate. By disposing the universal contact region in this way, the quantity of carriers flowing into the low-side circuit portion can be reduced when a negative surge voltage is input. Consequently, erroneous operation due to latchup of a logic portion can be minimized.
Public/Granted literature
- US20130127524A1 HIGH-VOLTAGE INTEGRATED CIRCUIT DEVICE Public/Granted day:2013-05-23
Information query
IPC分类: