The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2015
Filed:
May. 22, 2013
Rouying Zhan, Gilbert, AZ (US);
Chai Ean Gill, Chandler, AZ (US);
Wen-yi Chen, Chandler, AZ (US);
Michael H. Kaneshiro, Chandler, AZ (US);
Rouying Zhan, Gilbert, AZ (US);
Chai Ean Gill, Chandler, AZ (US);
Wen-Yi Chen, Chandler, AZ (US);
Michael H. Kaneshiro, Chandler, AZ (US);
FREESCALE SEMICONDUCTOR INC., Austin, TX (US);
Abstract
Protection device structures and related fabrication methods are provided. An exemplary semiconductor protection device includes a base well region having a first conductivity type, an emitter region within the base well region having a second conductivity type opposite the first conductivity type, a collector region having the second conductivity type, a first floating region having the second conductivity type within the base well region between the emitter region and the collector region, and a second floating region having the first conductivity type within the base well region between the first floating region and the collector region. The floating regions within the base well region are electrically connected to reduce current gain and improve holding voltage.