Abstract: A mechanical keyboard is provided, which includes a plurality of mechanical keys, a circuit board, a plurality of first magnetic elements, a lower casing and a plurality of second magnetic elements. The mechanical keyboard has a key region and an edge region surrounding the key region. The mechanical keys are located in the key region. The circuit board is disposed beneath the mechanical keys. The first magnetic elements are disposed beneath the circuit board and distributed in the key region. The lower casing is disposed beneath the mechanical keys, the circuit board and the first magnetic elements. The second magnetic elements are disposed over the lower casing, in which the second magnetic elements respectively correspond to the first magnetic elements and respectively repel the first magnetic elements.

Abstract: Packaging for a patient interface comprises: a plurality of panels arranged to be folded inwardly to define a housing for the patient interface, the plurality of panels comprising a pair of opposed side panels and a pair of opposed end panels; and a panel-retaining structure that is arranged to prevent outward collapse of the panels such that the patient interface is held in a compressed state; wherein at least one of the panels comprises at least one patient interface retaining feature that is attachable to the patient interface; and wherein the panel-retaining structure is releasable to cause the patient interface in the compressed state to urge one or more of the panels outwardly, to thereby enable display of the patient interface in a substantially in-use configuration.

Abstract: A constant time buck-boost switching converter includes: a power switch circuit for switching a first terminal of an inductor between an input voltage and a ground, and for switching a second terminal of the inductor between an output voltage and the ground; and a modulation control circuit for generating a buck ramp signal and a boost ramp signal and for controlling the inductor according to comparisons of these two ramp signals with an error amplification signal, so as to convert the input voltage to the output voltage. The average levels of the buck ramp signal and the boost ramp signal are both equal to a product of the output voltage multiplied by a predetermined ratio. The upper limit of the buck ramp signal and the lower limit of the boost ramp signal are both equal to a product of the input voltage multiplied by the predetermined ratio.

Abstract: Disclosed is a cost-effective method to fabricate a multifunctional collimator structure for contact image sensors to filter ambient infrared light to reduce noises. In one embodiment, an optical collimator, includes: a dielectric layer; a substrate; a plurality of via holes; and a conductive layer, wherein the dielectric layer is formed over the substrate, wherein the plurality of via holes are configured as an array along a lateral direction of a first surface of the dielectric layer, wherein each of the plurality of via holes extends through the dielectric layer and the substrate from the first surface of the dielectric layer to a second surface of the substrate in a vertical direction, and wherein the conductive layer is formed over at least one of the following: the first surface of the first dielectric layer and a portion of sidewalls of each of the plurality of via holes, and wherein the conductive layer is configured so as to allow the optical collimator to filter light in a range of wavelengths.

Abstract: The present disclosure relates to systems, non-transitory computer-readable media, and methods for providing a secure development environment for developing computer models by utilizing an exploration environment in conjunction with a production environment. In particular, the disclosed systems provide a method for a client account to develop machine learning models securely and efficiently (e.g., access, generate, train, and activate) by utilizing a scalable exploration environment isolated from a production environment. Further, the disclosed systems can provide a system for the client account to utilize to convert the exploration model to a production model and activate the production model within the production environment. In this way, the disclosed systems provide a separation between the exploration environment and the production environment when testing models and thus constrain the impact of testing models to the production environment.

Abstract: A defect detection method includes obtaining a first image corresponding to a first area on an object revealing an apparent defect, the first area bounding the area showing the apparent defect; selecting a detection model according to a size of the first image, the detection model selected being one of a group of three models based on dimensions of image, the image being in one of portrait, landscape, or regular square proportions; detecting and confirming or denying a defect on the first image according to the detection model and outputting a detection result, the use of only three possible AI models reduces the likelihood of mis-determinations. An electronic device and a non-volatile storage medium therein, for performing the above-described method, are also disclosed.

Abstract: A memory cell structure includes a transistor structure and a capacitor structure, where the capacitor structure includes a hydrogen absorption layer. The hydrogen absorption layer absorbs hydrogen, which prevents or reduces the likelihood of the hydrogen diffusing into an underlying metal-oxide channel of the transistor structure. In this way, the hydrogen absorption layer minimizes and/or reduces the likelihood of hydrogen contamination in the metal-oxide channel, which may enable a low current leakage to be achieved for the memory cell structure and reduces the likelihood of data corruption and/or failure of the memory cell structure, among other examples.

Abstract: Disclosed is a microfluidic detection device including a circuit substrate and a transparent substrate. The circuit substrate is provided with at least one first light-emitting device used to emit a detection beam, a photodetector used to receive the detection beam and send out a sensing signal, and a control circuit electrically connected to the first light-emitting device and the photodetector. The transparent substrate overlaps the circuit substrate and is provided with a microfluidic channel and a light guide structure. The light guide structure has a light incident surface disposed corresponding to the first light-emitting device and a light exiting surface disposed corresponding to the photodetector. The light guide structure extends from each of the light incident surface and the light exiting surface to the microfluidic channel and is adapted to transmit the detection beam into and out of the microfluidic channel.

Abstract: The disclosure provides a viewing angle control module including a first liquid crystal panel, a first polarizer, a second polarizer, and a phase retarder. The first liquid crystal panel includes a first substrate, a second substrate, a first alignment layer, a second alignment layer, a first liquid crystal layer, a first electrode layer, and a second electrode layer. A second alignment direction of the second alignment layer is antiparallel to a first alignment direction of the first alignment layer. The first electrode layer has multiple electrode patterns arranged at intervals along a first direction and extending along a second direction. A first absorption axis of the first polarizer is perpendicular to a second absorption axis of the second polarizer. An included angle between the first absorption axis and the first alignment direction is 45 degrees. A display apparatus including the viewing angle control module is also provided.

Abstract: A three-dimensional memory device and a manufacturing method thereof are provided. The three-dimensional memory device includes first and second stacking structures, isolation pillars, gate dielectric layers, channel layers and conductive pillars. The stacking structures are laterally spaced apart from each other. The stacking structures respectively comprises alternately stacked insulating layers and conductive layers. The isolation pillars laterally extend between the stacking structures. The isolation pillars further protrude into the stacking structures, and a space between the stacking structures is divided into cell regions. The gate dielectric layers are respectively formed in one of the cell regions, and cover opposing sidewalls of the stacking structures and sidewalls of the isolation pillars. The channel layers respectively cover an inner surface of one of the gate dielectric layers.

Abstract: A method includes loading a wafer over a wafer chuck in a process chamber; performing a deposition process on the loaded wafer; supplying a fluid medium to a fluid guiding structure in the wafer chuck from a fluid inlet port on the wafer chuck, the fluid guiding structure comprising a plurality of arc-shaped channels fluidly communicated with each other; guiding the fluid medium from a first one of the arc-shaped channels of the fluid guiding structure to a second one of the arc-shaped channels of the fluid guiding structure. The second one of the arc-shaped channels of the fluid guiding structure is concentric with the first one of the arc-shaped channels of the fluid guiding structure from a top view.

Abstract: A non-coherent noise reduction method, comprising: (a) receiving a plurality of input audio sensing signals by a processor, wherein the input audio sensing signals correspond to a plurality of channels responsive to sensing by a plurality of audio sensors; (b) detecting whether non-coherent noise exists in at least one of the channels by a non-coherent noise detector; (c) estimating at least one noise power of the non-coherent noise by a noise power estimator, if the non-coherent noise exists in at least one of the channels; (d) deriving at least one noise contour of the non-coherent noise by a noise contour estimator, if the non-coherent noise exists in at least one of the channels; and (e) enhancing the input audio sensing signals according to the noise power and the noise contour if the non-coherent noise exists in at least one of the channels.

Abstract: The present application provides an LED chip based on an alumina-silica composite substrate and a fabrication method thereof. The LED chip comprises an alumina-silica composite PSS substrate, a composite buffer layer and an LED structural layer, wherein the composite buffer layer is epitaxially grown on the alumina-silica composite PSS substrate, and the LED structural layer is epitaxially grown on the composite buffer layer. The composite buffer layer comprises: an aluminium oxynitride/aluminium nitride layer and a silicon oxynitride layer, wherein the alumina in the alumina-silica composite PSS substrate is covered with the aluminium oxynitride/aluminium nitride layer, and the silica in the alumina-silica composite PSS substrate is covered with the aluminium oxynitride/aluminium nitride layer and the silicon oxynitride layer in a staggered manner.

Abstract: Methods for forming under-bump metallurgy (UBM) structures having different surface profiles and semiconductor devices formed by the same are disclosed. In an embodiment, a semiconductor device includes a first redistribution line and a second redistribution line over a semiconductor substrate; a first passivation layer over the first redistribution line and the second redistribution line; a first under-bump metallurgy (UBM) structure over and electrically coupled to the first redistribution line, the first UBM structure extending through the first passivation layer, a top surface of the first UBM structure being concave; and a second UBM structure over and electrically coupled to the second redistribution line, the second UBM structure extending through the first passivation layer, a top surface of the second UBM structure being flat or convex.

Abstract: A portion of a buffer layer on a backside of a substrate of a photomask assembly may be removed prior to formation of one or more capping layers on the backside of the substrate. The one or more capping layers may be formed directly on the backside of the substrate where the buffer layer is removed from the substrate, and a hard mask layer may be formed directly on the one or more capping layers. The one or more capping layers may include a low-stress material to promote adhesion between the one or more capping layers and the substrate, and to reduce and/or minimize peeling and delamination of the capping layer(s) from the substrate. This may reduce the likelihood of damage to the pellicle layer and/or other components of the photomask assembly and/or may increase the yield of an exposure process in which the photomask assembly is used.

Abstract: A battery cell includes a housing having an inner cavity, a first side wall and a second side wall opposite to each other. The second side wall includes an explosion-proof hole. A first bottom support and a second bottom support are disposed in the inner cavity, support the electrode core, spaced apart from each other, and define a first gas channel. The second side wall support the first bottom support and the second bottom support. The explosion-proof hole communicates with the inner cavity through the first gas channel. A terminal post is disposed on a side wall of the housing other than the second side wall; An explosion-proof valve is mounted on the second side wall, and configured to cover the explosion-proof hole. An electrode core is disposed in the inner cavity, connected to the terminal post, and spaced apart from the explosion-proof hole.

Abstract: A vehicle has a battery pack. The battery pack includes batteries or a battery module. The battery module includes batteries. Each battery includes a battery casing and an explosion-proof valve. The explosion-proof valve is arranged on the battery casing. The explosion-proof valve is provided with a notch groove. The explosion-proof valve includes an opening area. In the depth direction of the notch groove, the shape of the orthographic projection of the opening area is non-circular. The outer edge of the orthographic projection of the opening area is a preset opening boundary, the area of the orthographic projection of the opening area being S1, the area of the orthographic projection of the explosion-proof valve being S, S1 and S meeting: S1/S?3, and the units of S1 and S both being mm2.

Abstract: A nanomaterial composition for magnetic field-induced electrical stimulation of cells includes a piezoelectric nanoparticle and a magnetic nanodisc. The piezoelectric nanoparticle is conjugated to a first molecule of a specific binding molecule pair and is coated with a cell-binding molecule. The magnetic nanodisc is conjugated to a second molecule of the specific binding molecule pair and is attached to the piezoelectric nanoparticle through bonding of the second molecule and the first molecule. The magnetic nanodisc converts a magnetic energy into a mechanical energy in the presence of an external magnetic field, and the mechanical energy is then applied to the piezoelectric nanoparticle that is in contact with the cells via the cell-binding molecule, such that the piezoelectric nanoparticle converts the mechanical energy into an electrical energy, so as to electrically stimulate the cells. A method for magnetic field-induced electrical stimulation of cells in a subject is also provided.