Abstract: Provided is an organic light emitting device comprising: an anode, a cathode, a light emitting layer between the anode and the cathode, an electron inhibition layer between the anode and the light emitting layer, and a hole transport layer between the electron inhibition layer and the anode, wherein the light emitting layer comprises a compound of the following Chemical Formula 1, a compound of the following Chemical Formula 2, and a compound of the following Chemical Formula 3 as defined in the specification: having improved driving voltage, efficiency, and lifetime.

Abstract: The present disclosure relates to a method of more efficiently separating and purifying a polyarylene sulfide exhibiting excellent strength, heat resistance, flame retardancy, and processability when processed into a molded product after polymerization.

Abstract: Provided is a lamp for a vehicle. The vehicle lamp comprises a light source unit for generating light, and a lens unit for forming a predetermined beam pattern by allowing the light incident through a plurality of incident lenses from the light source unit to be emitted through a plurality of emitting lenses corresponding to each of the plurality of incident lenses. The plurality of incident lenses comprises a first incident lens for allowing the light incident from the light source unit to be emitted in a first direction, and a second incident lens for allowing a first portion of the light incident from the light source unit to be emitted in the first direction, and a second portion of the light to be emitted in a second direction different from the first direction.

Abstract: A system for fracturing multiple wellbores on a multi-well pad can include a missile that receives high-pressure fracturing fluid from a plurality of pump truck. The system can also include a main manifold that receives the high-pressure fracturing fluid from the missile, where the main manifold includes multiple valves and multiple output channels, where each of the valves are operated between an open position and a closed position. The system can further include multiple wellbores including a first wellbore, a second wellbore, and a third wellbore, where the wellbores are connected to the output channels of the main manifold. The valves of the main manifold can be operated to enable simultaneous flow of the high-pressure fracturing fluid to the first wellbore, the second wellbore, and the third wellbore so that the first wellbore, the second wellbore, and the third wellbore are fractured simultaneously.

Abstract: The operating method of a server for providing a metaverse in which a call between user terminals may be performed may include: generating a first avatar based on profile information of a first user terminal and a second avatar based on profile information of a second user terminal; providing a map space in which the first avatar and the second avatar are able to travel; mediating a call between the first user terminal and the second user terminal based on whether a plurality of avatars including the first avatar and the second avatar have entered a first audio space included in the map space; and completing matching between the first user terminal and the second user terminal when a first sign of attraction to the second avatar is transmitted from the first user terminal and a sign of attraction to the first avatar is transmitted from the second user terminal.

Abstract: A user terminal including a graphical user interface (GUI) for providing secure data communication with a server in a communication network is proposed. The user terminal may include a GUI configured to receive one or more user inputs and display data received from the server. The GUI may include a first screen configured to display a first instruction set for converting a private account to a group account and a second screen configured to display a group account information set received from the server. The user terminal may cause the server to generate the group account, control a first database of the server to store a second information set relating to the group account, generate a second virtual database of the server different from the first database, and copy the second information set stored in the first database and record the copied second information set in the second virtual database.

Abstract: The present disclosure discloses a timing controller of a display device having an overdriving function. The timing controller includes a data reception circuit configured to receive display data, an overdriving circuit configured to perform overdriving on display data, and a data transmission circuit configured to transit overdriven display data.

Abstract: A method and system for providing secure data communication between two or more user terminals in a communication network is proposed. The method may include receiving, from a first user terminal, a first instruction set configured to request that a private account be converted into a group account, the private account owned by a user of the first user terminal. The method may also include generating the group account jointly owned by at least the user of the first user terminal and a user of a second user terminal. The method may also include controlling a first database to store a second information set relating to the group account, and generating a second virtual database different from the first database. The method may also include copying the second information set stored in the first database and recording the copied second information set in the second virtual database.

Abstract: A lamp for a vehicle includes a first lamp unit that forms a first region of a beam pattern using a plurality of first lamp modules arranged along a width direction of the vehicle; and a second lamp unit that is disposed more outward than the first lamp unit along the width direction of the vehicle and forms a second region of the beam pattern using a plurality of second lamp modules arranged along the width direction of the vehicle.

Abstract: The present disclosure relates to a method of more efficiently separating and recovering a polyarylene sulfide exhibiting excellent strength, heat resistance, flame retardancy, and processability when processed into a molded product after polymerization.

Abstract: A lamp module includes a light source unit that generates light; a light guide unit that guides the light incident on an incidence portion from the light source unit to be emitted to an emission portion; and an optical unit that transmits the light emitted from the light guide unit to allow a predetermined beam pattern to be formed. In particular, the optical unit includes a plurality of lenses disposed in a vehicle width direction, and the emission portion includes a plurality of emission surfaces disposed in the vehicle width direction to correspond to the plurality of lenses.

Abstract: A semiconductor device with redistribution layers on partial encapsulation is disclosed and may include providing a carrier with a non-photosensitive protection layer, forming a pattern in the non-photosensitive protection layer, providing a semiconductor die with a contact pad on a first surface, and bonding the semiconductor die to the non-photosensitive protection layer such that the contact pad aligns with the pattern formed in the non-photosensitive protection layer. A second surface opposite to the first surface of the semiconductor die, side surfaces between the first and second surfaces of the semiconductor die, and a portion of a first surface of the non-photosensitive protection layer may be encapsulated with an encapsulant. The carrier may be removed leaving the non-photosensitive protection layer bonded to the semiconductor die. A redistribution layer may be formed on the contact pad and a second surface of the non-photosensitive protection layer opposite to the first surface.

Abstract: Provided is an organic light-emitting device comprising an anode, a cathode, and a light-emitting layer provided between the anode and the cathode, wherein the light-emitting layer comprises a first compound of Chemical Formula 1 and a second compound of Chemical Formula 2: wherein: A is Chemical Formula 1a or 1b: Ar1 and Ar2 are each independently a C6-60 aromatic ring or a C2-60 heteroaromatic ring, and Ar1 and Ar2 are unsubstituted, or substituted with C1-60 alkyl, C6-60 aryl, or C2-60 heteroaryl; Ar?1 and Ar?2 are each independently substituted or unsubstituted C6-60 aryl or substituted or unsubstituted C2-60 heteroaryl; provided that a1+b1+c1+d+e+f is 1 or more; or a2+b2+c2+d+e+f is 1 or more; R?1 and R?2 are each independently hydrogen, deuterium, C1-60 alkyl, C6-60 aryl, or C2-60 heteroaryl; and r and s are each independently 0 to 7.

Abstract: Provided is an organic light emitting device, comprising: an anode; a cathode disposed opposite to the anode; and one or more organic material layers disposed between the anode and cathode, the organic material layer including a light emitting layer that includes a compound of Chemical Formula 1 and a compound Chemical Formula 2: wherein: one of R21, R22, R23, and R24 is -L21-Ar1, and the remaining are hydrogen; and one of R31, R32, R33, and R34 is -L22-Ar2, and the remaining are hydrogen; excluding compounds where: R21 is -L21-Ar1 and R31 is -L22-Ar2, R22 is -L21-Ar1 and R32 is -L22-Ar2, R23 is -L21-Ar1 and R33 is -L22-Ar2, or R24 is -L21-Ar1 and R34 is -L22Ar2; L21 and L22 each is a single bond, or a substituted or unsubstituted C6-60 arylene; X2 is O or S; and Ar1 is Chemical Formula 3:

Abstract: The present disclosure relates to a method for preparing a ceria-zirconia composite oxide, a ceria-zirconia composite oxide, and a catalyst including the same.

Abstract: A vehicle lamp includes a first lamp unit for forming a first region of a beam pattern, and a second lamp unit for forming a second region of the beam pattern. The first lamp unit and the second lamp unit are arranged in a left-right direction. Each of the first lamp unit and the second lamp unit includes a plurality of lamp modules arranged in the left-right direction, each of the plurality of lamp modules including a light source unit including a light source and a light path adjusting unit. A position of light irradiation region formed by the light emitted from each of the plurality of lamp modules is particularly configured depending on a position of the light source with respect to a rear focal point of the light path adjusting unit.

Abstract: According to an embodiment of the inventive concept, a method for matching an actual surgical image and a 3D-based virtual surgical simulation environment, which is performed by an apparatus, includes setting POI information during surgery at each of surgery steps in a pre-stored surgical image obtained by performing surgery the same as the actual surgical image, matching the POI information with a virtual pneumoperitoneum model of a patient, which is used for the 3D-based virtual surgical simulation environment, the virtual pneumoperitoneum model being displayed on a UI, recognizing a real-time surgery step of the actual surgical image and determining a location of the POI information for the respective recognized surgery step, and obtaining and displaying image information, which is captured by moving a location of an endoscope inserted into the virtual pneumoperitoneum model to the same location as the determined location of the POI information, through the UI.

Abstract: An antenna structure according to an embodiment of the present disclosure includes a transmission line, and a radiator connected to the transmission line, the radiator having a linear perimeter region and a plurality of curved perimeter regions separated by the linear perimeter region, wherein an outermost portion of the radiator from the transmission line in a planar view has any one of the curved peripheral regions. A broadband antenna structure covering low frequency and high frequency bands is provided.

Abstract: A method for preparing alpha-methylstyrene according to one embodiment of the present disclosure includes dehydrating a dimethylbenzyl alcohol solution in a reactor under an acid catalyst to prepare alpha-methylstyrene, where a reaction product after the dehydration reaction comprises a first reaction product including a first alpha-methylstyrene; and a second reaction product including vapor (H2O), a second alpha-methylstyrene and unreacted materials; and separating the second alpha-methylstyrene and the unreacted materials comprised in the second reaction product and recirculating the second alpha-methylstyrene and the unreacted materials to the reactor, a temperature inside the reactor during the dehydration reaction is 135° C. or higher, and a content of the acid catalyst is from 100 ppm to 1,500 ppm based on a total weight of dimethylbenzyl alcohol of the dimethylbenzyl alcohol solution.

Abstract: Disclosed are an embedded system, a fast 3D camera system based on structured light, and a method for acquiring 3D images using the system. The embedded system includes a pattern generation module for generating the pattern in real time and a camera trigger module for converting a camera synchronization signal into a trigger signal and transmitting the signal to a camera. A transform module for transforming the pattern into a video signal and a communication module for receiving a command for projecting patterns and capturing images may be further included. The fast 3D camera system based on structured light includes an embedded system for generating a pattern in real time upon receiving a command for projecting patterns and capturing images, a projection device for projecting the pattern, and a camera for capturing the image of an object onto which the pattern is projected.