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:
Oct. 14, 2014
Filed:
Jun. 11, 2013
Intermolecular, Inc., San Jose, CA (US);
Hanhong Chen, Milpitas, CA (US);
Edward Haywood, San Jose, CA (US);
Pragati Kumar, Santa Clara, CA (US);
Intermolecular, Inc., San Jose, CA (US);
Abstract
Determining an unknown step coverage of a thin film deposited on a 3D wafer includes exposing a planar wafer comprising a first film deposited thereon to X-ray radiation to create first fluorescent radiation; detecting the first fluorescent radiation; measuring a number of XRF counts on the planar wafer; creating an XRF model of the planar wafer; providing a portion of the 3D wafer comprising troughs and a second film deposited thereon; determining a multiplier factor between the portion of the 3D wafer and the planar wafer; exposing the portion of the 3D wafer to X-ray radiation to create second fluorescent radiation; detecting the second fluorescent radiation; measuring a number of XRF counts on the portion of the 3D wafer; calculating a step coverage of the portion of the 3D wafer; and determining a uniformity of the 3D wafer based on the step coverage of the portion of the 3D wafer.