Ultrasonic fingerprint sensor technologies and methods for multi-surface displays

#This disclosure relates generally to fingerprint sensor devices and related methods, including but not limited to ultrasonic fingerprint sensor systems and methods for using such systems.

#Biometric authentication can be an important feature for controlling access to devices, etc. Many existing products include some type of biometric authentication. Although some existing biometric authentication technologies provide satisfactory performance under some conditions, improved methods and devices would be desirable.

#The systems, methods and devices of the disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.

#Details of one or more implementations of the subject matter described in this specification are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale. Like reference numbers and designations in the various drawings indicate like elements.

#FIG. 1 is a block diagram that shows example components of an apparatus according to some disclosed implementations.

#FIGS. 2 and 3 depict isometric views of the front and rear sides of an apparatus.

#The Figures are provided to facilitate understanding of the concepts discussed in this disclosure, and are intended to be illustrative of some implementations that fall within the scope of this disclosure, but are not intended to be limiting—implementations consistent with this disclosure and which are not depicted in the Figures are still considered to be within the scope of this disclosure.

#The following description is directed to certain implementations for the purposes of describing the innovative aspects of this disclosure. However, a person having ordinary skill in the art will readily recognize that the teachings herein may be applied in a multitude of different ways. The described implementations may be implemented in any device, apparatus, or system that includes a biometric system as disclosed herein. In addition, it is contemplated that the described implementations may be included in or associated with a variety of electronic devices such as, but not limited to: mobile telephones, multimedia Internet enabled cellular telephones, mobile television receivers, wireless devices, smartphones, smart cards, Bluetooth® devices, personal data assistants (PDAs), wireless electronic mail receivers, hand-held or portable computers, netbooks, notebooks, smartbooks, tablets, global positioning system (GPS) receivers/navigators, cameras, digital media players (such as MP3 players), camcorders, game consoles, clocks, calculators, television monitors, flat panel displays, electronic reading devices (e.g., e-readers), mobile health devices, computer monitors, electronic photographs, stereo systems, DVD players, CD players, VCRs, radios, portable memory chips, parking meters, aesthetic structures (such as display of images on a piece of jewelry or clothing) and a variety of EMS devices. The teachings herein also may be used in applications such as, but not limited to, parts of consumer electronics products, liquid crystal devices, and electrophoretic devices. Thus, the teachings are not intended to be limited to the implementations depicted solely in the Figures, but instead have wide applicability as will be readily apparent to one having ordinary skill in the art.

#Using fingerprints for authentication, e.g., to allow a particular user access to a particular device or to authenticate a transaction performed with a device is now commonplace. As used herein, the term “finger” may refer to any digit of the hand, including a thumb. Accordingly, a thumbprint is to be understood to also constitute a “fingerprint” for the purposes of this disclosure. Similarly, reference to “fingers” is to be understood to be inclusive of “fingers and thumbs” for the purpose of this disclosure Thus, for example, reference to “all ten of a person's fingers” is to be understood to refer to all ten digits of both of the person's hands.