Abstract:
An image sensor including a planar sensor array, a lens configured to form an optical image on the planar sensor array and characterized by a locus of focal points on a curved surface, and a cover glass with multiple thickness levels or multiple cover glasses of different sizes. The one or more cover glasses are configured to shift the locus of focal points for large field angles, such that there are multiple intersections between the planar sensor array and the locus of focal points for a large FOV, and thus multiple zones with best focus on the planar sensor array.
Abstract:
Reducing the space occupied by a voltage regulation integrated circuit (IC) that includes an inductor is achieved by implementing the inductor as a 3D inductor having windings formed of conductive elements integrated into a lower substrate, a circuit layer, and an upper substrate, and positioning other components within a core space of the 3D inductor in the circuit layer. The space occupied by the inductor is shared with the other circuit components and with the structural layers of the voltage regulation IC. A voltage regulation IC may be a switched-mode power supply (SMPS) that includes an inductor with a capacitor and/or a switching circuit. The inductor is implemented as upper horizontal traces in an upper substrate, lower horizontal traces in a lower substrate, and vertical interconnects in a circuit layer between the upper substrate and the lower substrate, and the conductive elements form the 3D inductor as a rectangular coil.
Abstract:
A voltage regulator having a coil inductor is integrated or embedded in a system-on-chip (SOC) device. The coil inductor is fabricated on an inductor wafer with through vias, and the inductor wafer is joined with an SOC wafer for integration with the SOC device.
Abstract:
An image sensor device includes two or more image sensor arrays (or two or more regions of an image sensor array) and a low-power processor in a same package for capturing two or more images of an object, such as an eye of a user, using light in two or more wavelength bands, such as visible band, near-infrared band, and short-wave infrared band. The image sensor device includes one or more lens assemblies and/or a beam splitter for forming an image of the object on each of the two or more image sensor arrays. The image sensor device also includes one or more filters configured to select light from multiple wavelength bands for imaging by the respective image sensor arrays.
Abstract:
A device may include a surface at least partially defining an enclosed region, a plurality of fluids within the enclosed region, the plurality of fluids comprising at least a first fluid having a first acoustic impedance and a second fluid having a second acoustic impedance different from the first acoustic impedance, a first piezoelectric transducer disposed on the surface, the first piezoelectric transducer being configured to generate a first wave reception signal based, at least in part, on an ultrasonic return wave received through at least one of the plurality of fluids, and a processor coupled to the first piezoelectric transducer and configured to determine a measurement of a tilt of the device based, at least in part, on the first wave reception signal.
Abstract:
A piezoelectric micromechanical ultrasonic transducer (PMUT) includes a multilayer stack disposed on a substrate. The multilayer stack may include an anchor structure disposed over the substrate, a piezoelectric layer stack disposed over the anchor structure, and a mechanical layer disposed proximate to the piezoelectric layer stack. The piezoelectric layer stack may be disposed over a cavity. The mechanical layer may seal the cavity and, together with the piezoelectric layer stack, is supported by the anchor structure and forms a membrane over the cavity, the membrane being configured to undergo one or both of flexural motion and vibration when the PMUT receives or transmits ultrasonic signals.
Abstract:
Provided are space-efficient capacitors that have a higher quality factor than conventional designs and improve coupling of electrical energy from a through-glass via (TGV) to a dielectric. For example, provided is a TGV having a non-rectangular cross-section, where one end of the TGV is coupled to a first metal plate. A dielectric material is formed on the first metal plate. A second metal plate is formed on the dielectric material in a manner that overlaps at least a portion of the first metal plate to form at least one overlapped region of the dielectric material. At least a part of the perimeter of the overlapped region is non-planar. The overlapped region can be formed in a shape of a closed ring, in a plurality of portions of a ring shape, in substantially a quarter of a ring shape, and/or in substantially a half of a ring shape.
Abstract:
Some aspects pertain to an inductor apparatus that includes a first metal layer including a plurality of first interconnects, a second metal including a plurality of second interconnects, a first dielectric layer between the first metal layer and the second metal layer, and an inductor. The inductor includes a plurality of vias, where the plurality of vias are configured to couple the plurality of first interconnects to the plurality of second interconnects. The inductor includes a plurality of inductor loops formed by the plurality of vias, the plurality of first interconnects and the plurality of second interconnects. The inductor further includes a first magnetic layer and a second magnetic layer, located between the first interconnects and the second interconnects; and a third magnetic layer and an optional fourth magnetic layer outside of the plurality of inductor loops.
Abstract:
An apparatus may include an array of piezoelectric micromachined ultrasonic transducers (PMUTs) and a control system configured to communicate with the array of PMUTs. The control system may be configured to determine a target location within a human body and to control the array of PMUTs to focus ultrasonic waves at the target location.
Abstract:
Implementations of the subject matter described herein relate to sensors including piezoelectric micromechanical ultrasonic transducer (PMUT) sensor elements and arrays thereof. The PMUT sensor elements may be switchable between a non- ultrasonic force detection mode and an ultrasonic imaging mode. A PMUT sensor element may include a diaphragm that is capable of a static displacement on application of a force and is capable of a dynamic displacement when the PMUT sensor element transmits or receives ultrasonic signals. In some implementations, a PMUT sensor element includes a two dimensional-electron gas structure on the diaphragm. The sensors may further include a sensor controller configured to switch between a non- ultrasonic force detection mode and an ultrasonic imaging mode for one or more of the PMUT sensor elements, wherein an applied force is measured in the non-ultrasonic force detection mode and wherein an object is imaged ultrasonically during the ultrasonic imaging mode.