Qualcomm Incorporated

Frore Systems Inc.

Snaptrack Incorporated

Leonard Eugene Fennell

Suryaprakash Ganti

Kostadin Dimitrov Djordjev

David William Burns

Nicholas Ian Buchan

John Keith Schneider

Hrishikesh Vijaykumar Panchawagh

Samir Kumar Gupta

Brian James Gally

Jack Conway Kitchens

Seshagiri Rao Madhavapeddy

Jessica Liu Strohmann

Vikram Mukundan

Timothy Dickinson

Firas Sammoura

Stephen Michael Gojevic

Jack Conway Kitchens, Ii

Chin-Jen Tseng

Ming Tung

Mario Francisco Velez

Yipeng Lu

Eugene Dantsker

Ananth Saran Yalamarthy

Kollengode S Narayanan

Muhammed Ibrahim Sezan

Ashish Hinger

Nai-Kuei Kuo

Kristopher Andrew Lavery

Livingstone Song

Sanghoon Bae

Tsongming Kao

Jon Gregory Aday

Ila Ravindra Badge

Nathaniel Robert Bennett

Srikanth Chilukuru

Max Hamel

Fan Zhong

John Schneider

Kollengode Narayanan

Jack Conway Ii Kitchens

Timothy A Dickinson

Disclosed are methods, devices, apparatuses, and systems for an under-display ultrasonic fingerprint sensor. A display device may include a platen, a display underlying the platen, and an ultrasonic fingerprint sensor underlying the display, where the ultrasonic fingerprint sensor is configured to transmit and receive ultrasonic waves via an acoustic path through the platen and the display. A light-blocking layer and/or an electrical shielding layer may be provided between the ultrasonic fingerprint sensor and the display, where the light-blocking layer and/or the electrical shielding layer are in the acoustic path. A mechanical stress isolation layer may be provided between the ultrasonic fingerprint sensor and the display, where the mechanical stress isolation layer is in the acoustic path.

Ultrasonic fingerprint sensor for under-display applications

A method for providing a cooling system is described. The method includes providing a plurality of sheets. Each sheet includes at least one structure for a level in each cooling cell of a plurality of cooling cells. A particular level of each cooling cell includes a cooling element having a first side and a second side. The cooling element is configured to undergo vibrational motion to drive fluid from the first side to the second side. The method also includes aligning the sheets, attaching the sheets to form a laminate that includes the cooling cells, and separating the laminate into sections. Each section includes at least one cooling cell.

Method for fabricating MEMS-based cooling systems

A method for providing a piezoelectric device is described. The method includes providing a first electrode layer on a substrate and coating at least one layer of piezoelectric material. The coating using at least one of slot-die coating, dip coating, aerosol coating and R2R coating such that a layer of the at least one layer of piezoelectric material has a variation in thickness of not more than ten percent. The layer(s) of piezoelectric materials are also heat treated. Multiple layers of piezoelectric material may be slot-die coated and heat treated to provide a multilayer having the desired thickness. A second electrode layer is provided on the layer(s) of piezoelectric material.

Method and system for fabricating a piezoelectric device

A piezoelectric cooling system and method for driving the cooling system are described. The piezoelectric cooling system includes a first piezoelectric cooling element and a second piezoelectric cooling element. The first piezoelectric cooling element is configured to direct a fluid toward a surface of a heat-generating structure. The second piezoelectric cooling element is configured to direct the fluid to an outlet area after heat has been transferred to the fluid by the heat-generating structure.

Combined architecture for cooling devices

Disclosed are methods, devices, apparatuses, and systems for poling a piezoelectric film. A poling system can be a corona poling system including a corona source with one or more corona wires configured to transfer a corona discharge onto a major surface of the piezoelectric film. The poling system can further include a grid electrode interposed between the corona source and the piezoelectric film. A substrate including the piezoelectric film may be supported on a substrate support, where the substrate and the corona source are configured to move relative to each other during poling.

Apparatus and method for poling a piezoelectric film

A fingerprint sensor device includes a sensor substrate, a plurality of sensor circuits over a first surface of the sensor substrate, and a transceiver layer located over the plurality of sensor circuits and the first surface of the sensor substrate. The transceiver layer includes a piezoelectric layer and a transceiver electrode positioned over the piezoelectric layer. The piezoelectric layer and the transceiver electrode are configured to generate one or more ultrasonic waves or to receive one or more ultrasonic waves. The fingerprint sensor device may include a cap coupled to the sensor substrate and a cavity formed between the cap and the sensor substrate. The cavity and the sensor substrate may form an acoustic barrier.

Fingerprint sensor device and methods thereof

This disclosure provides systems, methods and apparatus related to an ultrasonic sensor for detecting ultrasonic energy. In some implementations, the ultrasonic sensor includes a piezoelectric receiver layer bonded with an adhesive to an array of pixel circuits disposed on a substrate, each pixel circuit in the array including at least one thin film transistor (TFT) element and having a pixel input electrode electrically coupled to the pixel circuit. Methods of forming ultrasonic sensors include bonding piezoelectric receiver layers to TFT arrays.

Ultrasonic sensor with bonded piezoelectric layer

Embodiments of an ultrasonic button and methods for using the ultrasonic button are disclosed. In one embodiment, an ultrasonic button may include an ultrasonic transmitter configured to transmit an ultrasonic wave, a piezoelectric receiver layer configured to receive a reflected wave of the ultrasonic wave, a platen layer configured to protect the ultrasonic transmitter and the piezoelectric receiver layer, a first matching layer configured to match an acoustic impedance of the platen layer with an acoustic impedance of ridges of a finger, and an ultrasonic sensor array configured to detect the finger using the reflected wave.

Ultrasonic authenticating button

A display device has a visual display capable of providing an image and an ultrasonic sensor array attached to a backside component of the visual display. The ultrasonic sensor array may be an ultrasonic area array sensor. For example, the backside component may be a backlight, an optical waveguide, or a display TFT.

Display with backside ultrasonic sensor array

Various techniques and apparatuses are disclosed that provide for pixelated display modules that integrate an ultrasonic fingerprint or biometric sensing capability. In some implementations, the ultrasonic fingerprint sensor and the display components of the display module may share a common backplane. In some implementations, the ultrasonic fingerprint sensor may share a flex cable with other components in the display module. In some implementations, the ultrasonic fingerprint sensor may leverage conductive traces on a cover glass used to provide for touch input to the display module.

Display with peripherally configured ultrasonic biometric sensor

Growing community of inventors

San Jose, CA, United States of America

Leonard Eugene Fennell