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:
Jul. 17, 2018
Filed:
Sep. 08, 2015
Apple Inc., Cupertino, CA (US);
Priyanka Bhandari, San Francisco, CA (US);
Blake R. Marshall, San Jose, CA (US);
Li-Quan Tan, Sunnyvale, CA (US);
Reza Nasiri Mahalati, Belmont, CA (US);
Aidan N. Zimmerman, Sunnyvale, CA (US);
Ryan P. Brooks, Menlo Park, CA (US);
Kevin C. Armendariz, Mountain View, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A ring electrode to determine the orientation of the stylus relative to the surface. The stylus can include a ring electrode configuration which can improve capacitive coupling between the ring electrode and the touch panel. The ring electrode configuration can include a ring electrode and ground ring, and ground plate. By varying the lengths of ring electrode, ground ring, ground plate, and the distance between these elements, the electric field emanating from the ring electrode can be tuned to optimize the capacitive coupling between the ring electrode and surface. In some examples, the ring electrode can include multiple sub-rings. In some examples, the ring electrode can comprise a crown shape including projections, each having a width that tapers to a minimum width along the length of the ring electrode.