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:
Mar. 28, 2017
Filed:
May. 08, 2015
Qualcomm Incorporated, San Diego, CA (US);
Chunchen Liu, San Diego, CA (US);
Oscar Ming Kin Law, San Diego, CA (US);
Ju-Yi Lu, Tainan, TW;
Po-Hung Chen, San Diego, CA (US);
Zhengyu Duan, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Methods and an apparatus related to generating parameters and guidelines used in the manufacture of semiconductor IC devices are described. A method includes measuring a first oscillating signal produced by a first ring oscillator that includes a first interconnect provided in a first interconnect layer of an IC, selecting a first mode of operation for a second ring oscillator circuit that includes a second interconnect disposed in alignment with the first interconnect, selecting a second mode of operation for the second ring oscillator circuit, and determining one or more characteristics of the first interconnect based on a difference in frequency of the first oscillating signal produced when the second ring oscillator circuit is operated in the first mode and frequency of the first oscillating signal when the second ring oscillator circuit is operated in the second mode.