A display apparatus includes a display panel including a first surface and a second surface that is opposite the first surface, a cover panel in which an opening portion overlapping the second surface of the display panel, the cover panel including a first cover surface facing the second surface of the display panel and a second cover surface opposite the first cover surface, a fingerprint sensor assembly including a sensing circuit board electrically connected to a fingerprint sensor in the opening portion, extending from a side of the opening portion to the second cover surface of the cover panel, and including a first edge and a second edge that are opposite each other, and an adhesive pattern located between the cover panel and the sensing circuit board, and having a width equal to or less than a distance between the first edge and the second edge.

An ultrasonic induction circuit is provided, a first electrode of an ultrasonic sensor is electrically connected with a first terminal of the ultrasonic sensing circuit, a second electrode is electrically connected with a second terminal of a first potential supply sub-circuit, and the first terminal of the first potential supply sub-circuit is electrically connected with a first potential supply end. A gate of M1 is electrically connected with the second electrode and the second terminal of the compensation sub-circuit. The second electrode is electrically connected with the first terminal of the compensation sub-circuit. The first electrode is coupled to the second potential supply end. The first terminal of the signal output sub-circuit is electrically connected to the second electrode of the first transistor, and the second terminal is electrically connected to the second terminal of the ultrasonic induction circuit.

A display device includes a display panel, a fingerprint sensing part, and a cover panel. The fingerprint sensing part is covered by the display panel. The cover panel is covered by the display panel and includes a metal layer. The metal layer includes a first metal layer and a second metal layer. The first metal layer surrounds the fingerprint sensing part in a plan view. The second metal layer extends from the first metal layer and is disposed between the display panel and the fingerprint sensing part.

A fingerprint sensing device and an operation method thereof are provided. The fingerprint sensing device includes a driver integrated chip and a fingerprint sensor. The driver integrated chip is coupled to a host processor. The fingerprint sensor is coupled to the driver integrated chip and the host processor. The fingerprint sensor obtains a fingerprint image during a period when the host processor is in the sleep mode. The driver integrated chip performs a fingerprint verification on the fingerprint image, and the driver integrated chip determines to wake up the host processor according to whether the fingerprint image passes the fingerprint verification.

A method for fabricating an array substrate, comprising: providing a base substrate; forming a driving-circuit layer, which comprises first driving circuits and second driving circuits; forming a first electrode layer, which comprises transferring electrodes electrically connected to the first driving circuits, and pixel electrodes electrically connected to the second driving-circuits; forming a pixel-defining layer, which is provided with pixel openings and connecting via holes; forming a first pattern-defining layer, which covers the connecting via holes and exposes the pixel openings; forming an organic light-emitting-material layer, which covers the pixel openings and the first pattern-defining layer; removing the first pattern-defining layer, such that the organic light-emitting-material layer forms an organic light-emitting layer; forming a second pattern-defining layer surrounding the connecting via holes; and forming a second electrode layer, which comprises a common electrode and fingerprint-recognition electrodes isolated by the second pattern-defining layer.

An ultrasonic biometric imaging device comprising: a cover structure having an exposed outer surface, wherein at least a portion of the exposed outer surface forms a sensing surface of the ultrasonic biometric imaging device; and a plurality of ultrasonic transducers attached to an edge portion of the cover structure and configured to emit an ultrasound wave into the cover structure; the cover structure further comprising a reflection reducing layer arranged at a bottom surface of the cover structure, wherein the reflection reducing layer is configured to reduce an amplitude of ultrasonic wave reflections at the bottom surface of the cover structure.

An ultrasonic sensor, a preparation method of the ultrasonic sensor, and a display apparatus are provided. The ultrasonic sensor includes a texture recognition region and a contrast region. The contrast region is located on at least one side of the texture recognition region. The texture recognition region includes at least one recognizing unit, and the contrast region includes at least one contrast unit. The at least one recognizing unit includes a first dielectric material layer, and the at least one contrast unit includes a second dielectric material layer. The first dielectric material layer and the second dielectric material layer are made of a same material. The first dielectric material layer exhibits piezoelectric properties. A piezoelectric strain constant of the first dielectric material layer is greater than a piezoelectric strain constant of the second dielectric material layer.

An information handling system may include at least one processor; and a computer-readable medium having instructions thereon that are executable by the at least one processor for: communicatively coupling to an electronic pen; receiving, from the electronic pen, stroke data indicative of content drawn by the user with the electronic pen; receiving, from the electronic pen, biometric data associated with a user of the electronic pen, wherein the biometric data is collected via one or more grip pads of the electronic pen contemporaneously with the content being drawn; receiving, from the electronic pen, timestamp data indicative of a time at which the content was drawn; and creating a cryptographic hash based on the stroke data, the biometric data, and the timestamp data.

A measurement apparatus and a method for controlling a measurement apparatus is provided. The measurement apparatus comprises an ultrasonic sensor for receiving a further user input. The further user input may be used to identify a specific user. Accordingly, the measurement apparatus can be automatically configured based on data related to the identified user. Since the ultrasonic sensor may be operated even if the ultrasonic sensor is covered by a protecting element, the robustness of the measurement apparatus can be further improved.

Low power consumption baseline tracking systems and methods for automatically tracking a baseline input into a capacitive sensor having a plurality of transmitter electrodes and a plurality of receiver electrodes. A partial baseline scan is captured by driving all or a portion of the plurality of transmitter electrodes simultaneously and detecting receiver signals from a subset of the at least one receiver electrode simultaneously, and the partial baseline scan is compared with a stored baseline image. When a difference between the captured partial baseline scan and the stored baseline image exceeds a threshold value, a full baseline image scan is acquired, and the stored baseline image is updated.