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:
May. 26, 2026
Filed:
Jun. 14, 2024
Shanghai Huali Integrated Circuit Corporation, Shanghai, CN;
Pinhan Chen, Shanghai, CN;
Huafeng Wu, Shanghai, CN;
Shanghai Hauli Integrated Circuit Corporation, Shanghai, CN;
Abstract
The present application discloses a device variation extraction chip, including m MOS devices and one test key, where the test key has 2n pads; a drain of the (k(n−1)+i)-th MOS device is short-circuited with the i-th pad of the test key; a gate of the (k(n−1)+i)-th MOS device is short-circuited with the (n−1+i)-th pad of the test key; a source of each of the m MOS devices is short-circuited with the (2n−1)-th pad; a bulk of each of the m MOS devices is short-circuited with the 2n-th pad. The device variation extraction chip can save the chip area, save the test time, obtain a large amount of data, and improve the accuracy of the obtained device variation and device mismatch, without the addition of a photomask and process node steps.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile