A display substrate, a method for driving the same and a display device are provided. The display substrate includes a first base substrate, at least one vibrator and at least one identification unit. The at least one identification unit is on the first base substrate, the at least one identification unit is in a display area of the display substrate, and the at least one vibrator is on a side of the first base substrate facing away from the identification unit. The at least one vibrator is configured to drive the first base substrate to vibrate to emit an acoustic signal; and the at least one identification unit is configured to receive an ultrasonic signal reflected by an object to be detected, and convert the ultrasonic signal into a first electrical signal.

An ultrasonic sensor includes a substrate, a platen and an acoustic stack disposed between the substrate and the platen, including at least one piezoelectric layer. The ultrasonic transducer exhibits a signal-to-noise ratio of at least 4 over a frequency range of at least 9 to 16 MHz.

An apparatus may include an ultrasonic sensor system having an ultrasonic transceiver layer, a thin-film transistor (TFT) layer and a frequency-differentiating layer. In some examples, the frequency-differentiating layer may include a first frequency-differentiating layer area corresponding to a lower-frequency area of the ultrasonic sensor system. The first frequency-differentiating layer area may include a first material having a first acoustic impedance. In some such examples, the frequency-differentiating layer may include a second frequency-differentiating layer area corresponding to a higher-frequency area of the ultrasonic sensor system. The second frequency-differentiating layer area may include a second material having a second acoustic impedance. The first acoustic impedance may, for example, be higher than the second acoustic impedance.

An acoustic imaging metamaterial is provided for obtaining edge detection information of a tangible object. The acoustic imaging metamaterial includes a longitudinally extending phononic crystal substrate that defines a first major surface and a second major surface opposite the first major surface. A first structurally rigid grating layer is disposed adjacent the first major surface, and a second structurally rigid grating layer is disposed adjacent the second major surface. In various aspects, the first and second structurally rigid grating layers are identical in shape and dimensions, and are aligned with one another. The acoustic imaging metamaterial is configured to redirect, confine, and/or manipulate an incident acoustic wave resulting in a high contrast image used for extracting edge detection information of the tangible object. The background medium fluid of the system can be air or a fluid such as water.

Intraluminal imaging devices and methods of assembling the intraluminal imaging devices are provided. For example, an intraluminal imaging device can include a flexible elongate catheter body and a rigid imaging assembly coupled to a distal portion of the elongate catheter body. A distal portion of the inner member is positioned within a lumen of the imaging assembly, and the flexible elongate member comprises a strain relief layer positioned around the inner member. A distal portion of the strain relief layer is positioned radially between the inner member and the imaging assembly, and a proximal end of the strain relief layer is positioned distally of a proximal end of the inner member, forming a transition region. The transition region can prevent bending or kinking of the flexible elongate catheter body when the intraluminal imaging device is navigating tortuous regions of the patient's anatomy.

A dual frequency ultrasound transducer includes a high frequency (HF) transducer and a low frequency (LF) transducer that is positioned behind the high frequency transducer. An intermediate layer is positioned between the low frequency transducer and the high frequency transducer to absorb high frequency ultrasound signals. An alignment feature on the low frequency transducer is positioned with respect to a fiducial that is marked at a known position with respect to high frequency transducer elements of the HF transducer to align low frequency transducer elements of the LF transducer with the HF transducer elements.

An imaging device includes a transducer that includes an array of piezoelectric elements formed on a substrate. Each piezoelectric element includes at least one membrane suspended from the substrate, at least one bottom electrode disposed on the membrane, at least one piezoelectric layer disposed on the bottom electrode, and at least one top electrode disposed on the at least one piezoelectric layer. Adjacent piezoelectric elements are configured to be isolated acoustically from each other. The device is utilized to measure flow or flow along with imaging anatomy.

A shared-housing ultrasound transducer and machine-vision camera system is disclosed for registering the transducer's x, y, z position in space and pitch, yaw, and roll orientation with respect to an object, such as a patient's body. The position and orientation are correlated with transducer scan data, and scans of the same region of the object are compared in order to reduce ultrasound artifacts and speckles. The system can be extended to interoperative gamma probes or other non-contact sensor probes and medical instruments. Methods are disclosed for computer or remote guiding of a sensor probe or instrument with respect to saved positions and orientations of the sensor probe.

Disclosed in an ultrasonic probe for obtaining an ultrasonic image. The ultrasonic probe includes piezoelectric elements forming a plurality of rows arranged to form a pair along a lateral direction, a kerf formed between the piezoelectric elements along the lateral direction, a first circuit layer disposed below the piezoelectric elements, a second circuit layer disposed to be spaced apart from a lower side of the first circuit layer and including a plurality of wires extending along the rows, the second circuit layer being provided with a first region in selectively contact with the piezoelectric elements and a second region disposed at opposite ends of the first region and folded without being in contact with the piezoelectric elements, and a first connection part to electrically connect the first circuit layer and the second circuit layer, wherein the first region is, when the plurality of wires extending along one row of the pair of rows extends from the first region to the second region, provided such that the plurality of wires is distributed to the other adjacent row.

High volume-rate three-dimensional (“3D”) ultrasound imaging using fast acoustic steering via tilting electromechanical reflectors is described. Ultrasound beams are directed towards one or more tilting reflectors, which are scanned through a range of tilt angles in order to image a 3D field-of-view with a high volume rate.