Abstract: It is related to a manufacturing method of a negative electrode active material for lithium secondary battery, comprising: preparing an artificial graphite; mixing the artificial graphite and a coal tar to form a coating layer on the artificial graphite; and carbonizing the artificial graphite on which the coating layer is formed, wherein, the artificial graphite has a degree of sphericity of 0.6 to 1; and in the step of preparing an artificial graphite, the artificial graphite contains 20 wt % or more of artificial graphite derived from coal-based coke.

Abstract: According to various embodiments of the present invention, disclosed is an electronic device comprising: a first antenna element configured so as to transmit and receive a signal of a first frequency band or a second frequency band; a second antenna element configured so as to transmit and receive the signal of the first frequency band or the second frequency band; a first RF block electrically connected to the first antenna element and the second antenna element and including a first transmission and reception circuit and a second transmission and reception circuit; an RF reception circuit for receiving the signal of the first frequency band or the second frequency band from the first antenna element or the second antenna element; and a transceiver, wherein the first transmission and reception circuit processes the signal of the first frequency band or the second frequency band, the second transmission and reception circuit processes the signal of the first frequency band or the second frequency band, and th

Abstract: A display device includes a display part, a degradation compensator that generates a first compensated grayscale value by compensating for a first grayscale value corresponding to a first pixel, and generates a second compensated grayscale value by compensating for a second grayscale value corresponding to a second pixel, and a data driver that generates a first data signal based on the first compensated grayscale value to supply the first data signal to the first pixel, and generates a second data signal based on the second compensated grayscale value to supply the second data signal to the second pixel. A second degradation curve is defined by a first degradation coefficient corresponding to a first degradation curve, and a second degradation coefficient corresponding to a first estimated degradation curve for the light conversion particles of a second color calculated by applying the first degradation curve.

Abstract: This disclosure relates to a method of preparing a lithium compound that includes preparing a lithium phosphate, mixing the lithium phosphate with sulfuric acid to obtain a mixture, converting the lithium phosphate into lithium sulfate through a reaction in the mixture, and separating the lithium sulfate in a solid phase, wherein in the step of converting the lithium phosphate into lithium sulfate through the reaction in the mixture, a sum concentration ([P+S] mol/L) of phosphorus (P) and sulfur (S) in a liquid phase of the mixture is greater than or equal to 5 mol/L.

Abstract: Provided is a lighting device, comprising: a light source module comprising: at least one light source disposed on a printed circuit board; and a resin layer disposed on the printed circuit board so that the light source is embedded; a light reflection member formed on at least any one of one side surface and another side surface of the resin layer; and a diffusion plate having an upper surface formed on the light source module, and a side wall which is integrally formed with the upper surface and formed to extend in a lower side direction and which is adhered onto the light reflection member, wherein a first separated space is formed between the light source module and the upper surface of the diffusion plate, whereby flexibility of the product itself can be secured, and durability and reliability of the product can be also improved.

Abstract: A mosquito repellent system and a method for operating the same are provided. The mosquito repellent system includes a passenger detection device that detects a passenger in a vehicle, a mosquito recognition device that recognizes a mosquito, a first ultrasonic device and a second ultrasonic device that generate and radiate an ultrasonic wave, and a control device configured to obtain information about the passenger using the passenger detection device, determine whether there is a mosquito in the vehicle using the mosquito recognition device, and control at least one of the first ultrasonic device or the second ultrasonic device, or a combination thereof to radiate the ultrasonic wave based on the information about the passenger in response determining that there is the mosquito in the vehicle.

Abstract: Disclosed herein relates to a battery pack, in which a plurality of cell stack assemblies are housed in a pack case, excluding the frame of a module, thereby providing efficient heat dissipation during normal operation. Additionally, the battery pack has an advantage in enhancing safety against ignition or explosion. In the event of abnormal operation, where any of the cell stack assemblies generates heat or undergoes thermal runaway, the heat from the affected cell stack assembly can be prevented from propagating to adjacent cell stack assemblies by forming a separation space between a base plate and the corresponding cell stack assembly through the vaporization of a heat-conducting pad.

Abstract: Disclosed is a system for managing a vehicle battery that is chargeable/dischargeable and stores energy for driving a vehicle driving motor. The system for managing the vehicle battery as disclosed includes a controller that measures a polarization voltage of each of a plurality of battery cells in a vehicle battery after charging of the vehicle battery is terminated, and determines whether each of the plurality of battery cells is abnormal based on the measured polarization voltage.

Abstract: A display device includes a display panel including a display area and a non-display area adjacent to the display area, an impact resistance layer disposed in the display area and the non-display area on the display panel and including a polymer material, a protective film disposed on the impact resistance layer and a light-blocking layer disposed in the non-display area between the impact resistance layer and the protective film.

Abstract: An optical device for realizing augmented reality comprises a lens comprising a first surface and side surfaces, a display device disposed on a first side surface among the side surfaces of the lens and displaying a first image in a first area and a second image in a second area, a first reflector disposed in the lens and reflecting the first image incident on the first side surface of the lens to the first surface, a second reflector disposed in the lens and reflecting the second image incident on the first side surface of the lens to the first surface, a first condenser disposed between the lens and the first area of the display device and focusing the first image on the first reflector, and a second condenser disposed between the lens and the second area of the display device and focusing the second image on the second reflector.

Abstract: Provided is an electroosmotic pump including a housing including a shaft hole, a membrane disposed between a first space arranged in a direction away from the shaft hole and a second space adjacent to the shaft hole, a first electrode body and a second electrode body arranged at opposite sides based on the membrane, a shaft extending to an outside of the housing through the shaft hole, and a first fluid included in an internal space of the housing.

Abstract: A display device includes a first substrate, an organic light-emitting-element layer disposed on the first substrate, an encapsulation layer disposed on the organic light-emitting-element layer, and a lens array layer disposed on the encapsulation layer. The lens array layer includes a lens layer including multiple lenses, and a second substrate disposed (e.g., directly disposed) on the lenses. The second substrate includes multiple concave depressions corresponding to shapes of the lenses.

Abstract: A display device including a display panel having a foldable area, a support member disposed on a bottom surface of the display panel and including a plurality of openings formed in the foldable area, and an elastic member disposed on a bottom surface of the support member and overlapping the openings in the foldable area.

Abstract: The present disclosure provides an externally heated aerosol generation device and a cigarette that may provide a sufficient amount of atomization to allow a user to have a satisfactory smoking experience even during an initial puff because thermal energy is easily transferred to the cigarette.

Abstract: Provided is a method and device for outputting a large-capacity 3D model for an augmented reality (AR) device. A method of outputting a large-capacity 3D model for an AR device includes generating a multi-texture and a 3D mesh based on a multi-view image, generating a 3D model using the multi-texture and the 3D mesh, and transmitting, to the AR device, an image of the 3D model in a view, to which a camera of the AR device is directed, according to camera movement and rotation information of the AR device, and the AR device outputs the image in the view, to which the camera is directed.

Abstract: A method for manufacturing a secondary battery includes a forming step of pressing a pouch sheet by using a press die so that left and right accommodation grooves, which are bilaterally symmetrical to each other and are opened upward, and a bridge connecting the left and right accommodation grooves to each other are formed in the pouch sheet, wherein the bridge protrudes upward with respect to bottom surfaces of the left and right accommodation grooves, and a curved portion having a rounded shape is formed on an upper end of the bridge, a seating step of seating an electrode assembly in one of the left and right accommodation grooves, and a folding step of folding the pouch sheet so that the left and right accommodation grooves face each other.

Abstract: A universal driving device includes a ring gear, a sun gear installed such that the shaft distance between a rotation shaft of the sun gear and a rotation shaft of the ring gear is changeable, and a split gear disposed between the sun gear and the ring gear, and configured to split power, received from the sun gear through one path, into multiple paths and transmit the power to the ring gear.

Abstract: A light emitting display device can include a display panel configured to display an image, a driver configured to drive the display panel, and a power supply configured to supply a high-level voltage to a first power line of the display panel. Also, the power supply includes a voltage controller configured to receive, from the driver, a vertical synchronization signal and current amount information of the high-level voltage for driving of the display panel, and boost the high-level voltage to be supplied to the display panel during a vertical blank period, based on the vertical synchronization signal and the current amount information of the high-level voltage.

Abstract: Provided are a control unit that predicts the life of an inkjet head unit and maximizes its life to be used, and a substrate treating apparatus including the same. The control unit performs maintenance of an inkjet head unit for discharging a substrate treatment liquid onto a substrate and comprises a count module for counting the number of discharges for each nozzle of the inkjet head unit, a comparison module for comparing the number of discharges with a reference value to determine whether the number of discharges is equal to or greater than the reference value, and an evaluation module for evaluating whether a life of the inkjet head unit has reached a usable life based on whether the number of discharges of each nozzle is equal to or greater than the reference value.

Abstract: A display apparatus includes pixels. Each of the pixels includes a first node controller applying a data voltage to a first node, a second node controller shifting a voltage of a second node from a low level driving voltage to an on pulse voltage, a third node controller applying a reference voltage having an on level to a third node during a first period in one frame and applying the low level driving voltage to the third node during a second period, a driving transistor being on-duty-driven during the first period and off-duty-driven during the second period, and a light emitting device including an anode electrode connected to the second electrode of the driving transistor and a cathode electrode. The light emitting device emits light responsive to a constant current applied from the driving transistor during the first period and does not emit light during the second period.