Integrated semiconductor circuit

US5990499A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Werner Kuhlmann · Stephanskirchen, DE
• Norbert Stath · Regensburg, DE
• Hans-Ludwig Althaus · Lappersdorf, DE
• Werner Spath · Holzkirchen, DE

Key dates

• Filing date: Sep 28, 1998
• Grant date: Nov 23, 1999
• Expiry date: Sep 28, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2224/48464
• WIPO field: Semiconductors
• WIPO sector: Electrical engineering

Abstract

An integrated semiconductor circuit has a component formed of a semiconductor substrate with an active pn junction formed between a first semiconductor region of a first conductivity type and a second semiconductor region of a second conductivity type. The semiconductor circuit also has a protective circuit that is associated with the component and serves to dissipate overvoltages and/or electrostatic charges. The protective circuit has a protective pn junction formed in a semiconductor mount with a first semiconductor mount region of the first conductivity type and a second semiconductor mount region of the second conductivity type. The second semiconductor mount region of the second conductivity type is electrically coupled to the first semiconductor region formed in the semiconductor substrate of the first conductivity type.