Abstract: A display device that includes a light emitting element layer disposed on a substrate and including a plurality of light emitting elements and an encapsulation layer including an organic-inorganic hybrid layer disposed on the light emitting element layer, a first inorganic encapsulation layer disposed on the organic-inorganic hybrid layer, a second inorganic encapsulation layer disposed on the first inorganic encapsulation layer, and a third inorganic encapsulation layer disposed on the second inorganic encapsulation layer. The organic-inorganic hybrid layer contains silicon, carbon and nitrogen. The first inorganic encapsulation layer, the second inorganic encapsulation layer and the third inorganic encapsulation layer each contains silicon and nitrogen.

Abstract: A display device that includes a light emitting element layer disposed on a substrate, the light emitting element layer including a plurality of light emitting elements; and an encapsulation layer comprising a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer sequentially stacked on the organic encapsulation layer, the second inorganic encapsulation layer including a first inorganic layer; a second inorganic layer; and a third inorganic layer disposed on the organic encapsulation layer, a thickness of the second inorganic layer is greater than a thickness of the third inorganic layer, the thickness of the third inorganic layer is greater than a thickness of the first inorganic layer, and a refractive index of the second inorganic layer is about 1.9 or more.

Abstract: A display device includes first and second semiconductor layers on a substrate, the first and second semiconductor layers including a polycrystalline semiconductor material and an oxide semiconductor material, respectively. The device includes a first gate insulating layer on the first and second semiconductor layers. The device includes first and second gate electrodes on the first gate insulating layer, the first and second gate electrodes corresponding to the first and second semiconductor layers, respectively. The device includes a first interlayer insulating layer on the first gate electrode and the second gate electrode. The device includes first source and drain electrodes and second source and drain electrodes on the first interlayer insulating layer, the first source and drain electrodes connected to both end portions, respectively, of the first semiconductor layer, the second source and drain electrodes connected to both end portions, respectively, of the second semiconductor layer.

Abstract: A display device includes a substrate, a light emitting element layer on the substrate and including light emitting elements in a display area, and an encapsulation layer including a first inorganic encapsulation layer on the light emitting element layer, an organic encapsulation layer on the first inorganic encapsulation layer, and a second inorganic encapsulation layer on the organic encapsulation layer, where the first inorganic encapsulation layer or the second inorganic encapsulation layer includes a first inorganic layer, a second inorganic layer on the first inorganic layer and a third inorganic layer on the second inorganic layer, a thickness of each of the first and third inorganic layers is less than a thickness of the second inorganic layer and is about 50 ? or less, and a ratio of the thickness of the first inorganic layer to the thickness of the second inorganic layer is about 0.03 or less.

Abstract: A display device includes a first substrate, a transistor on the first substrate, a pixel electrode disposed on the transistor and connected to the transistor, a pixel defining layer on the pixel electrode, a spacer on the pixel defining layer, and a second substrate on the spacer. The spacer includes a first spacer disposed at a center of the first substrate and a second spacer disposed at an edge of the first substrate in a plan view, and the second spacer has a width that gradually increases in a direction from the first substrate toward the second substrate.

Abstract: disclosure A positive electrode for a lithium secondary battery includes a positive electrode collector; and a positive electrode active material layer which is formed on at least one surface of the positive electrode collector and includes a positive electrode active material, wherein the positive electrode active material layer has a pore volume of 7.0×10?3·cm3/g to 8.0×10?3·cm3/g. A method for preparing the positive electrode is also provided.

Abstract: A positive electrode for a lithium secondary battery includes a collector; and a positive electrode active material layer disposed on at least one surface of the collector, wherein the ratio of a peak intensity of a (003) plane to a peak intensity of a (101) plane of the positive electrode measured by X-ray diffraction analysis is 8 or more.

Abstract: A biometric data management method includes: measuring a bio signal of a user by a patch-type bio signal measuring device; checking a first residual quantity of a battery of a smart watch; connecting wireless communication between the patch-type bio signal measuring device and the smart watch, and receiving, by the smart watch, first biometric data corresponding to the bio signal measured by the patch-type bio signal measuring device from the patch-type bio signal measuring device; transmitting, by the smart watch, the first biometric data received from the patch-type bio signal measuring device to a server; disconnecting the wireless communication between the patch-type bio signal measuring device and the smart watch, and entering the smart watch into a standby mode; checking, by the smart watch, a second residual quantity of the battery; and transmitting, by the smart watch or the server, information on requested biometric data to a candidate device.

Abstract: A positive electrode active material includes a lithium composite transition metal oxide in the form of a single particle composed of one single nodule and/or in the form of a pseudo-single particle, which is a composite of 30 or less nodules, and a coating layer formed on the surface of the lithium composite transition metal oxide particle. The coating layer contains aluminum (Al) and tungsten (W). The positive electrode active material satisfies Equation 1 below: 45?X×X??56??[Equation 1] wherein, X is the content of nickel among all metals except for lithium in the lithium composite transition metal oxide (unit: mol %), and X? is the BET specific surface area of the positive electrode active material (unit: m2/g).

Abstract: The present disclosure provides a method for manufacturing a Mn—Bi based sintered magnet with a simple process and a Mn—Bi based sintered magnet having excellent magnetic properties such as maximum magnetic energy product manufactured therefrom.

Abstract: An unmanned charging device and method for a smart logistics vehicle are disclosed. The unmanned charging device includes a charging body configured to enable a mobile robot to dock therewith and having an inner space, and a charging terminal unit inserted into the inner space of the charging body and having a front support at a front side thereof, the charging terminal unit being configured to enable charging of the mobile robot. When the mobile robot approaches the charging body in response to reception of a charging request, a sensing unit of the mobile robot is supported by the front support, thereby causing the mobile robot to be adjusted in position. Docking of the mobile robot with the charging terminal unit is performed in a position-adjusted state of the mobile robot.

Abstract: Disclosed is a bio-signal measurement device. The device includes a sensor that collects a user's bio-signal, and a dock that is installed on a body-wearable and/or body-attachable product and has a space for mounting the sensor, in which the sensor and the dock are detachable and attachable to each other using magnetism.

Abstract: A page buffer includes a bit line controller connected between a bit line and a sensing node, wherein the bit line controller is capable of adjusting a potential level of the sensing node, based on a cell current amount of the bit line, by performing an evaluation operation. The page buffer also includes a first latch unit connected to the sensing node, wherein the first latch unit is capable of adjusting an operation period of the evaluation operation. The page buffer further includes a second latch unit for latching verify data, based on the potential level of the sensing node.

Abstract: A semiconductor memory device includes a memory cell array including memory cells, a peripheral circuit performing a read/verify operation of selected memory cells, and a control logic circuit controlling the read/verify operation of the peripheral circuit. The control logic circuit controls the peripheral circuit to apply a first voltage to a selected word line connected to the selected memory cells, float unselected word lines adjacent to the selected word line among unselected word lines, apply a first under-drive voltage lower than the first voltage to the selected word line during at least a partial period in which the unselected word lines adjacent to the selected word line are floated, and apply a second voltage higher than the first under-drive voltage and lower than the first voltage to the selected word line.

Abstract: The present disclosure provides a method for preparing a Mn—Bi based resin magnet, which can provide a Mn—Bi based resin magnet with excellent magnetic properties by forming a polymer coating on the surface of a Mn—Bi based magnetic phase powder, and a Mn—Bi based resin magnet prepared therefrom.

Abstract: The present disclosure provides a single- and multi-phase DC/DC converter and a control method thereof that can offer a wide range of voltage conversion ratio by substantially reducing the switching frequency range, thereby resulting in performance improvement. Reduction in the switching frequency range is achieved by controlling the output voltage or current with a combination of variable duty ratio, variable frequency, and delay-time control.

Abstract: Provided is an organic electroluminescent display device, including a substrate, an organic light-emitting device on the substrate, and an encapsulation layer formed on the organic light-emitting device and the substrate. The encapsulation layer includes an inorganic layer and a polymer organic layer alternatingly stacked with an intermediate layer formed of a first organic monomer between the inorganic layer and the polymer organic layer, and one surface of the intermediate layer is bonded to the inorganic layer through bonding sites on a surface of the inorganic layer and another surface of the intermediate layer is bonded to the organic layer by polymerization.

Abstract: The present invention relates to a method of preparing a positive electrode active material for a lithium secondary battery and a positive electrode active material prepared thereby, wherein the preparation method includes a first step of preparing a lithium transition metal oxide by mixing a lithium raw material and a transition metal precursor containing 70 mol % or more of nickel based on the total number of moles of transition metals and sintering the mixture; and a second step of washing the lithium transition metal oxide with hot water of more than 90° C., wherein, after the second step, a result of EELS analysis of a particle surface of the lithium transition metal oxide satisfies Equation 1.