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:
Aug. 03, 2021
Filed:
Apr. 10, 2019
Waleed Sami Haddad, San Francisco, CA (US);
Yuxin Wang, Palatine, IL (US);
Waleed Sami Haddad, San Francisco, CA (US);
Yuxin Wang, Palatine, IL (US);
Other;
Abstract
An optical fingerprint reader apparatus is configured to detect skin features of a finger using Frustrated Total Internal Reflection contrast detection. The apparatus comprises a display comprising a transparent cover and a substrate comprising an array of active pixels that serve as an illuminator of the apparatus. The apparatus comprises a pinhole array which can be affixed to a transparent display or integrated within an opaque display. An optical sensor is optically coupled to the display via the pinhole array and comprises an array of photosensors. A processor is coupled to the display and the optical sensor. The processor is configured to control reading of signals from the photosensors and to control illumination of selected active pixels in accordance with a predefined scanning pattern that covers a finger sensing region of the transparent cover during a fingerprint reading operation.