Abstract: Provided is a compound of Chemical Formula I: and to an organic light emitting device comprising the same.

Abstract: A multi-needle assembly for cosmetic procedure includes a main body having an inner space extending from one to the other ends, a reciprocating member provided in the main body to be moved along an inner circumferential surface of the main body in a forward and backward direction, a needle member placed into the reciprocating member 4 and coupled therein, and having a plurality of needles that enter or exit through one end of the main body, a guide suction into or from which the plurality of needles enter or exit, in which the guide suction comprises an opening to be brought into contact with a skin and forms a suction force for sucking in foreign matter from inside while the opening is in close contact with the skin, and a length adjusting means for moving the reciprocating member in a forward and backward direction along a spiral groove and a slide groove formed in the inner circumferential surface of the main body to adjust a projecting length of the needles.

Abstract: Provided is a heterocyclic compound of Formula 1: and an organic light emitting device comprising the same.

Abstract: A photoluminescence device includes a first base substrate, a blue light blocking pattern disposed on the first base substrate in a first color pixel area, a second color pixel area and a first light blocking area disposed between the first color pixel area and the second color pixel area, a blue color filter disposed on the first base substrate in a blue pixel area, the first light blocking area and a second light blocking area between the blue pixel area and the second color pixel area, a first color conversion pattern disposed on the blue light blocking pattern in the first color pixel area, and a second color conversion pattern disposed on the blue light blocking pattern in the second color pixel area.

Abstract: A device detects a wake-up keyword from a received speech signal of a user by using a wake-up keyword model, and transmits a wake-up keyword detection/non-detection signal and the received speech signal of the user to a speech recognition server. The speech recognition server performs a recognition process on the speech signal of the user by setting a speech recognition model according to the detection or non-detection of the wake-up keyword.

Abstract: An acoustic resonator includes: a resonating unit including a piezoelectric layer, a first electrode disposed on a lower side of the piezoelectric layer, and a second electrode disposed on an upper side of the piezoelectric layer; a substrate disposed below the resonating unit; a support unit forming a cavity between the substrate and the resonating unit; and a pillar extending through the cavity and connecting the resonating unit to the substrate. The resonating unit further includes a first insertion layer disposed above the pillar.

Abstract: An acoustic resonator includes: a resonating unit including a resonating unit including a piezoelectric layer and first and second electrodes disposed on a lower side and an upper side of the piezoelectric layer, respectively; a substrate disposed on a lower side of the resonating unit; a support unit providing a cavity between the substrate and the resonating unit; and an intermediate metal layer separated from the second electrode and disposed in the resonating unit such that at least a portion thereof is surrounded by the piezoelectric layer and the second electrode.

Abstract: A bulk-acoustic resonator includes: a substrate; a first electrode disposed on the substrate; a piezoelectric layer at least partially covering the first electrode, and including a flat portion disposed in a central region, and an extension portion disposed outside the flat portion and having at least one step portion; an insertion layer disposed on the extension portion; and a second electrode disposed on upper portions of the insertion layer and the piezoelectric layer. The extension portion includes at least one first surface and at least one second surface disposed below an upper surface of the flat portion, and a connection surface connecting an upper surface of the flat portion to the at least one first surface or the at least one second surface, or connecting first surfaces among the at least one first surface to each other or second surfaces among the at least one second surface to each other.

Abstract: Provided is a heterocyclic compound of Formula 1: and an organic light emitting device comprising the same.

Abstract: An acoustic resonator includes: a substrate; a resonant portion including a center portion in which a first electrode, a piezoelectric layer, and a second electrode are sequentially stacked on the substrate, and an extension portion disposed along a periphery of the center portion; and a first metal layer disposed outwardly of the resonant portion to be electrically connected to the first electrode. The extension portion includes a lower insertion layer disposed on an upper surface of the first electrode or a lower surface of the first electrode. The piezoelectric layer includes a piezoelectric portion disposed in the center portion, and a bent portion disposed in the extension portion and extended from the piezoelectric portion at an incline according to a shape of the lower insertion layer. The lower insertion layer is formed of a conductive material extending an electrical path between the first electrode and the first metal layer.

Abstract: Provided is a compound of Chemical Formula 1 or 2: wherein: X1 to X3 are N or CH, with the proviso that at least one of X1 to X3 is N; Y is O or S; L1 and L2 are each independently a single bond or a substituted or unsubstituted C6-60 arylene; and Ar is a substituted or unsubstituted C1-60 alkyl, a substituted or unsubstituted C1-60 haloalkyl, a substituted or unsubstituted C3-60 cycloalkyl, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one to three heteroatoms selected from the group consisting of N, O, and S, and an organic light emitting device including the same.

Abstract: An acoustic resonator includes a substrate, an insulation layer disposed on the substrate, a resonating portion disposed on the insulation layer and having a first electrode, a piezoelectric layer, and a second electrode, stacked thereon, a cavity disposed between the insulation layer and the resonating portion, a protruded portion having a plurality of protrusions disposed on a lower surface of the cavity, and a hydrophobic layer disposed on an upper surface of the cavity and a surface of the protruded portion.

Abstract: An apparatus for providing multi-party conference and a method for assigning an encoder in the apparatus are provided. The apparatus for providing multi-party conference according to one embodiment of the present disclosure includes: an image quality determination module configured to determine an image providing quality for a terminal connected to a multi-party conference created in the apparatus; and an encoder assignment module configured to assign an encoder to the terminal based on the image providing quality, wherein when an assignable encoder does not exist at the time of assigning the encoder, the encoder assignment module retrieves one encoder among previously assigned encoders and assigns the retrieved encoder to the terminal.

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 speech recognition method includes: storing at least one acoustic model (AM); obtaining, from a device located outside the ASR server, a device ID for identifying the device; obtaining speech data from the device; selecting an AM based on the device ID; performing speech recognition on the speech data by using the selected AM; and outputting a result of the speech recognition.

Abstract: A peer-to-peer communication system in a partial mesh network includes a relay server configured to add, to a relay list, subscription information of a reception terminal included in a data subscription request in response to the data subscription request received from the reception terminal and a transmission terminal configured to receive the data subscription request from the relay server and add the subscription information of the reception terminal to a server transmission list.

Abstract: A bulk-acoustic wave resonator includes a substrate, a cavity formed in the substrate, a first electrode, a piezoelectric layer, and a second electrode stacked in order on the substrate, a resonator defined by the first electrode, the piezoelectric layer, and the second electrode overlapping in a vertical direction in an upper portion of the cavity, an additional layer disposed on one surface of the first electrode arranged in a wiring region on an external side of the resonator, and a wiring electrode connected to the first electrode arranged in the wiring region. The first electrode forms a contact interfacial surface with the additional layer and the wiring electrode.

Abstract: A speech signal processing method of a user terminal includes: receiving a speech signal, detecting a personalized information section including personal information in the speech signal, performing data processing on the personalized information section of the speech signal by using a personalized model generated based on the personal information, and receiving, from a server, a result of the data processing performed by the server on a general information section of the speech signal that is different than the personalized information section of the speech signal.

Abstract: A MEMS device includes a substrate, a MEMS element portion disposed on a surface of the substrate, a cap having a cavity formed to oppose the MEMS element portion, and a diffusion prevention layer formed on at least a portion of the cap, wherein at least one of the cap and the substrate includes a bonding layer disposed outside of the cavity, and wherein the cap includes a spreading prevention portion disposed between the bonding layer and the cavity and having a V-shape in cross-section.

Abstract: A bulk-acoustic wave resonator includes a substrate, a first layer, a second layer, a membrane layer, and a resonance portion. The substrate includes a substrate protection layer. The first layer is disposed on the substrate protection layer. The second layer is disposed outside of the first layer. The membrane layer forms a cavity with the substrate protection layer and the first layer. The resonance portion is disposed on the membrane layer. Either one or both of the substrate protection layer and the membrane layer includes a protrusion disposed in the cavity.