Abstract: A bulk-acoustic wave resonator includes: a substrate; and a resonator portion in which a first electrode, a piezoelectric layer, and a second electrode are sequentially stacked on the substrate. The piezoelectric layer is formed of aluminum nitride (AlN) containing scandium (Sc). The bulk-acoustic wave resonator satisfies the following expression: leakage current density×scandium (Sc) content<20. The leakage current density is a leakage current density of the piezoelectric layer in ?A/cm2, and the scandium (Sc) content is a weight percentage (wt %) of scandium (Sc) in the piezoelectric layer.

Abstract: Disclosed herein are an apparatus and method for recognizing a voice speaker. The apparatus for recognizing a voice speaker includes a voice feature extraction unit configured to extract a feature vector from a voice signal inputted through a microphone; and a speaker recognition unit configured to calculate a speaker recognition score by selecting a reverberant environment from multiple reverberant environment learning data sets based on the feature vector extracted by the voice feature extraction unit and to recognize a speaker by assigning a weight depending on the selected reverberant environment to the speaker recognition score.

Abstract: Provided is a compressor including a valve unit including: at least two guide pins passing through a discharge valve; and through holes allowing the guide pins to pass therethrough to control oblique motion of the discharge valve with respect to a horizontal direction during up and down movement of the discharge valve. When the discharge valve obliquely moves up and down with respect to the horizontal direction, the guide pin comes into contact with at least two points of an inner circumferential surface of the through hole so that the oblique movement of the discharge valve is restricted, thereby improving the durability of the discharge valve and reducing noise during operation of the compression.

Abstract: One embodiment relates to a cover assembly and a motor including the same, the cover assembly comprising: a cover body; and a plurality of grooves formed on the upper surface of the cover body so as to guide coils, wherein a hole is formed at one side of the groove so as to penetrate the cover body. Therefore, the motor guides the coils to the outside by using the hole formed in the cover assembly such that assemblability is improved.

Abstract: A display device including: a first substrate; a second substrate facing the first substrate; a light-amount adjusting layer interposed between the first substrate and the second substrate; and a backlight unit disposed under the first substrate, wherein the second substrate includes a plurality of color conversion layers respectively disposed on a plurality of pixel regions, the color conversion layer includes a partition wall; and a phosphor disposed on areas defined by the partition wall, and the color conversion layer includes an air layer between the second substrate and the phosphor.

Abstract: A device for opening and closing a urea inlet for a vehicle is configured to close an inlet of a urea filler neck in a push manner and to open the same in a pull manner, preventing a user from touching the vehicle body or peripheral portions when opening and closing the inlet.

Abstract: The present disclosure relates to a device for preventing overflow of urea water out of an injection hole of a urea water tank when urea water is injected into the injection hole. The device is configured to enhance the function of a ventilation flow path, thus efficiently relieving pressure in the urea water tank when urea water is injected into the urea water tank.

Abstract: A color conversation panel according to an embodiment may include partitioning walls disposed on a substrate, reflective layers disposed on outer surfaces of the partitioning walls, overcoats disposed outside on outer surfaces of the reflective layers and having water repellency, a spacer overlapping a part of the partitioning walls and protruding from a part of the overcoats, the spacer and the overcoats being formed on a same layer, and color conversion layers disposed on the overcoats and disposed in areas defined by the partitioning walls.

Abstract: A bulk-acoustic wave resonator includes: a first electrode disposed above a substrate; a piezoelectric layer disposed to cover at least a portion of the first electrode; and a second electrode disposed to cover at least a portion of the piezoelectric layer. A plurality of steps are formed in any one or any combination of any two or more of the first electrode, the piezoelectric layer, and the second electrode in an active region in which the first electrode, the piezoelectric layer, and the second electrode are all disposed to overlap one another.

Abstract: The present invention relates to an optical fiber device for removing cladding light, an apparatus and a method for etching the same.

Abstract: Disclosed is a method of manufacturing a sound absorbing material for a vehicle, which may include: (a) preparing a mixed fiber including an amount of about 55 to 75 wt % of microfiber polyethylene terephthalate staple fiber having fineness of about 0.3 to 0.7 denier, an amount of about 20 to 40 wt % of low-melt polyethylene terephthalate staple fiber having a fineness of about 1 to 3 denier and a melting point of about 100 to 110° C., and an amount of about 1 to 20 wt % of hollow staple fiber having a fineness of about 13 to 17 denier and a diameter of about 38 to 43 ?m, based on the total weight of the mixed fiber. The method may suitably further comprise (b) forming a plurality of webs comprising the mixed fiber; (c) forming a web layer comprising a plurality of webs; and (d) forming non-woven felt comprising the web layer.

Abstract: Provided is a compound of Formula 1: wherein: Cy1 and Cy2 are each independently a substituted or unsubstituted hetero ring; R1 to R5 are the same as or different from each other, and are each independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, a carbonyl group, an ester group, an imide group, an amino group, a silyl group, a boron group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group: n1 and n2 are each an integer from 0 to 4: n3 to n5 are each an integer from 0 to 3; and when n1 to n5 are each 2 or more, two or more substituents in the parenthesis are the same as or different from each other, and an organic light emitting device including the same.

Abstract: An apparatus and a method for controlling power consumption of a terminal in a wireless communication system are provided. The method includes deactivating one or more of hardware components for signal reception in a transmission interval if there is no data to be received in the transmission interval, and receiving a control signal by activating all the components in a next transmission interval.

Abstract: An integrated fuel filter device for a vehicle includes a fuel filter disposed at a fuel feed line between a bombe and an engine, a pump for delivering fuel inside the bombe to the engine via the fuel feed line, a first fuel filling line connected to an inlet of the fuel filter and configured to guide fuel refueled from an outside of the vehicle to the inlet of the fuel filter, a second fuel filling line connected between an outlet of the fuel filter and the bombe and configured to guide the fuel passing through the fuel filter to the bombe, and a variable shut-off valve for controlling a flow of the fuel delivered from the pump to the inlet of the fuel filter and a flow of the fuel delivered from the outlet of the fuel filter to the bombe.

Abstract: Disclosed is a system including at least one network interface; at least one processor operatively connected to the at least one network interface; and at least one memory configured to store a plurality of versions of software updates for a group of mobile devices and operatively connected to the at least one processor, wherein the at least one memory stores instructions causing the at least one processor, when executed, to receive a request for providing a list of software updates from an external server through the at least one network interface, to generate the list of the software updates, the list including information on a plurality of versions of the software updates, to provide the list to the external server through the at least one network interface, to receive a request for providing a selected version of the software update from one of the mobile devices through the at least one network interface, and to provide the selected version of the software update to the one of the mobile devices through

Abstract: A display panel may include a first display substrate and a second display substrate on the first display substrate. The second display substrate may include a plurality of pixel regions and a peripheral region adjacent to the pixel regions. The second display substrate may include a first color control pattern configured to emit light of a first color, a second color control pattern spaced apart from the first color control pattern in a first direction and configured to emit light of a second color different from the first color, and first and second light-blocking patterns in the peripheral region between the first and second color control patterns. The first and second light-blocking patterns may be spaced apart from each other, in a second direction crossing the first direction, to define a gap region.

Abstract: The present disclosure relates to an insertion type drug injection device capable of being inserted into a body for injecting a drug into a skin, including: a main body having an open insert part and formed in a tubular shape having a hollow space therein, a needle assembly formed in the insert part, provided with a plurality of needles, and including a pneumatic port and a drug injection port, and a drug injection pipe inserted into the main body and connected to a drug injection port of the needle assembly, and an air flowing pipe connected to the pneumatic port.

Abstract: A bulk-acoustic wave resonator includes a substrate; a lower electrode formed on the substrate, and at least a portion of the lower electrode is formed on a cavity; a piezoelectric layer formed on the lower electrode; an upper electrode formed on the piezoelectric layer; a membrane layer formed below the lower electrode and forming the cavity together with the substrate; and a protruding portion formed on the membrane layer and further formed in the cavity in a direction that extends away from the membrane layer.

Abstract: Disclosed are, inter alia, a sound absorption and insulation material including a polyester hollow fiber, a polyester low-melting-point composite fiber and a polyester base fiber, a sound absorption and insulation pad for a floor including the same, and a manufacturing method thereof for improving the elasticity and sound absorption and insulation performance of the sound absorption and insulation material. The sound absorption and insulation material is an environmentally friendly material that can reduce discomfort due to the generation of volatile organic compounds (VOCs) and the emission of toxic gases during combustion. Also, the sound absorption and insulation pad including the sound absorption and insulation material can exhibit superior sound absorption performance, sound insulation performance and actual vehicle performance compared to a conventional sound absorption and insulation pad of the same thickness.

Abstract: A color conversion panel includes a substrate, a plurality of color conversion layers and a transmission layer on the substrate, a capping layer on the plurality of color conversion layers and the transmission layer, and a filter layer on the capping layer.