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:
Nov. 14, 2017
Filed:
Jul. 19, 2016
Alpha and Omega Semiconductor Incorporated, Sunnyvale, CA (US);
Yeeheng Lee, San Jose, CA (US);
Sik Lui, Sunnyvale, CA (US);
Jongoh Kim, Sunnyvale, CA (US);
Hong Chang, Cupertino, CA (US);
Madhur Bobde, San Jose, CA (US);
Lingpeng Guan, Sunnyvale, CA (US);
Hamza Yilmaz, Saratoga, CA (US);
ALPHA AND OMEGA SEMICONDUCTOR INCORPORATED, Sunnyvale, CA (US);
Abstract
Embodiments of the present disclosure provide a contact structure in a split-gate trench transistor device for electrically connecting the top electrode to the bottom electrode inside the trench. The transistor device comprises a semiconductor substrate and one or more trenches formed in the semiconductor substrate. The trenches are lined with insulating materials along the sidewalls inside the trenches. Each trench has a bottom electrode in lower portions of the trench and a top electrode in its upper portions. The bottom electrode and the top electrode are separated by an insulating material. A contact structure filled with conductive materials is formed in each trench in an area outside of an active region of the device to connect the top electrode and the bottom electrode. It is emphasized that this abstract is provided to comply with rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.