Bfly Operations, Inc.

Sarp Satir

Jianwei Liu

Keith Glen Fife

Lingyun Miao

Jaime Scott Zahorian

Gerard M Schmid

Jungwook Yang

James Beach

Joseph Lutsky

Sharath Hosali

Simon Esteve

Wayne Sams

An ultrasound device is described. The ultrasound device comprises a capacitive micromachined ultrasonic transducer (CMUT). The CMUT comprises a membrane, a substrate, a cavity disposed between the membrane and the substrate, wherein the cavity comprises a bottom surface adjacent to the substrate, and non-uniform pedestals protruding from the bottom surface of the cavity into the cavity and towards the membrane.

Capacitive Micromachined ultrasonic transducers (CMUTs) having non-uniform pedestals

An ultrasound device is described. The ultrasound device may include a cavity, a membrane, and a sensing electrode. When an electrical signal is applied to the sensing electrode and a static bias is applied to the membrane, the membrane vibrates within the cavity and produces ultrasonic signals. The cavity, the membrane, and the sensing electrode may be considered a capacitive micromachined ultrasonic transducer (CMUT). The sensing electrode may be shaped as a ring, whereby the central portion of the sensing electrode is removed. Removal of the central portion of the sensing electrode may reduce the parasitic capacitance without substantially affecting the production of ultrasonic signals by the CMUT. This, in turn, can result in an increase in the signal-to-noise ratio (SNR) of the ultrasonic signals. The ultrasound device may further include a bond pad configured for wire bonding, and a trench electrically isolating the bond pad from the membrane.

Ultrasound devices

An ultrasound imaging device includes an ultrasound transducer module disposed within a housing and a flowable acoustic damping material disposed on at least one surface located within an interior of the housing. The flowable acoustic damping material may be a Teflon&#x2122;-containing gel material, in contact with at least one internal surface of the imaging device to provide acoustic damping.

Acoustic damping for ultrasound imaging devices

An ultrasonic transducer device is provided. In some embodiments, the ultrasonic transducer device includes a substrate having a membrane support layer formed on a bottom cavity layer, and an opening in the membrane support layer so as to form a transducer cavity. In some embodiments, the opening comprises a truncated circle shape.

Micromachined ultrasonic transducer devices having truncated circle shaped cavities

A method of forming an ultrasonic transducer device includes forming a curved membrane over a transducer cavity. A center portion of the curved membrane is closer to a bottom surface of the transducer cavity than with respect to radially outwardly disposed portions of the curved membrane.

Curved micromachined ultrasonic transducer membranes

Aspects of the technology described herein relate to sensing a fingerprint of a subject via an ultrasound fingerprint sensor. Certain aspects relate to transmitting and receiving ultrasound data at multiple different frequencies to provide sensing data from different depths within the skin of the subject. Since different ultrasound frequencies are expected to penetrate a subject's skin to different degrees, sensing a finger at multiple ultrasound frequencies may provide information on different physical aspects of the finger. For instance, sound ultrasound frequencies may sense a surface of the skin, whereas other ultrasound frequencies may penetrate through one or more of the epidermal, dermal or subcutaneous layers. The ultrasound fingerprint apparatus may have utility in various applications, including but not limited to mobile electronic devices, such as mobile phones or tablet computers, a laptop computer or biometric access equipment.

Growing community of inventors

San Francisco, CA, United States of America

Sarp Satir