Abstract: A bimodal positive electrode active material includes a first lithium transition metal oxide and a second lithium transition metal oxide having an average particle diameter (D50) smaller than that of the first lithium transition metal oxide, wherein the first lithium transition metal oxide has higher particle strength and smaller crystalline size than the second lithium transition metal oxide, and a positive electrode and a lithium secondary battery which include the positive electrode active material. A positive electrode active material may improve high-temperature life characteristics and high-temperature storage characteristics of a lithium secondary battery. A positive electrode and a lithium secondary battery which include the positive electrode active material are also provided.

Abstract: Various embodiments relate to an FTIR-based diffractive optical structure, and a waveguide device and an augmented reality display each including same. The augmented reality display may comprise: a projector configured to provide light related to an image; and a waveguide device for outputting at least a part of the light, wherein: the waveguide device comprises a waveguide and a diffractive optical structure disposed on one surface of the waveguide; and the diffractive optical structure comprises an expansion grating disposed at the one surface of the waveguide and an output grating disposed along the axis perpendicular to the one surface of the waveguide and overlapping at least a partial area of the expansion grating.

Abstract: A system for estimating a rotor resistance of an induction motor includes: an equivalent torque curve generation unit to generate an equivalent torque curve based on output torques of the induction motor; a minimum current operation point determination unit to determine a minimum current operation point of the equivalent torque curve; an equivalent current phase variable control unit to variably control a rotor resistance of the induction motor when a stator current command of the minimum current operation point is applied to the induction motor; an output torque detection unit to detect the output torque of the induction motor when the rotor resistance is variably controlled; and a rotor resistance determination unit to determine a maximum torque among the detected output torques and determine an actual rotor resistance of the induction motor based on the rotor resistance when the maximum torque is generated.

Abstract: Provided are a mask assembly and a manufacturing method thereof, and an apparatus and a method of manufacturing a display device. The mask assembly includes a mask frame including an opening region, a support member disposed on the mask frame to divide the opening region into at least two, and a mask sheet disposed on the support member to overlap the opening region and including uneven edge portions and a plurality of holes.

Abstract: Disclosed is a cartridge assembly. The cartridge assembly includes a body part having an upper body opened upwards and downwards, and a lower body opened upwards and downwards, and coupled to the upper body to define an interior space, in which cells are stacked upwards and downwards, together with the upper body, and a cartridge including a cover part having an upper cover that covers an upper opening formed on an upper side of the upper body, and a lower cover that covers a lower opening formed on a lower side of the lower body, a plurality of cartridges are provided, and are stacked in an upward/downward direction, and each of the cartridges includes a connection part fixedly coupled to another cartridge disposed on an upper side or a lower side thereof to be adjacent thereto.

Abstract: Provided is a holographic display apparatus capable of providing an expanded viewing window when reproducing a holographic image via an off-axis technique. The holographic display apparatus includes a spatial light modulator comprising a plurality of pixels arranged two-dimensionally; and an aperture enlargement film configured to enlarge a beam diameter of a light beam coming from each of the plurality of pixels of the spatial light modulator. The beam diameter of each light beam enlarged by the aperture enlargement film may be greater than the width of an aperture of each pixel of the spatial light modulator.

Abstract: The substrate processing apparatus of the present invention comprises a hot plate for heating a substrate; and a cooling unit for cooling the hot plate; wherein the cooling unit includes a support plate having a space formed between the support plate and the hot plate, and a plurality of nozzles installed on the support plate and for supplying cooling gas to a bottom surface of the hot plate, wherein an outdoor air inlet passage provided in a through structure is provide in the support plate, wherein a portion of the outdoor air inlet passage forms a first region, through which a cable passes, and the remaining portion forms a second region, through which the cable does not pass and outdoor air introduces.

Abstract: A method of manufacturing a mask assembly includes preparing a mask frame including an opening area, forming an opening of a first group in a first area of a center of a mask sheet, tensioning and fixing the mask sheet to the mask frame, and forming an opening of a second group in a second area of the mask sheet. The second area surrounds the first area.

Abstract: A positive electrode for a lithium secondary battery includes a positive electrode active material layer including: a first positive electrode active material represented by Formula 1 and having a crystalline size of 150 nm or more; a conductive agent including single-walled carbon nanotubes (SWCNTs); and a binder. A lithium secondary battery includes the positive electrode.

Abstract: The present disclosure relates to a method for searching for the shortest path having a minimum link between buildings in a rectilinear polygon obstacle environment, which has been implemented to calculate the shortest path having a minimum link, among the shortest paths based on a Manhattan distance from one building to another building, when buildings are given in a rectilinear polygon obstacle environment. According to the present disclosure, in searching for the shortest path having a minimum link between two buildings, a more efficient data structure can be used in terms of an execution time and memory. A building-building minimum link and shortest path search problem can be solved through only the addition of very small operations by using the segment-point minimum link and shortest path search algorithm which can be easily expanded to the building-building minimum link and shortest path search problem.

Abstract: A method of preparing a lithium secondary battery includes: (1) mixing a small particle lithium composite transition metal oxide having an average particle diameter (D50) of less than 7 ?m with a boron-containing raw material and performing a heat treatment, mixing a large particle lithium composite transition metal oxide having an average particle diameter (D50) of 8 ?m or more with a cobalt-containing raw material and a boron-containing raw material and performing a heat treatment, mixing the first positive electrode active material and the second positive electrode active material to prepare a positive electrode material having a bimodal particle diameter distribution, preparing a positive electrode by coating the positive electrode material on a positive electrode collector, and assembling the positive electrode, a negative electrode including a silicon-based negative electrode active material, and a separator.

Abstract: Disclosed is a memory device which includes a memory cell array including memory cells, data latches connected with a sensing node and storing data in a first memory cell of the memory cells, a sensing latch connected with the sensing node, a temporary storage node, a switch connected between the sensing latch and the temporary storage node and configured to operate in response to a temporary storage node setup signal, a first precharge circuit configured to selectively precharge a first bit line corresponding to the first memory cell depending on a level of the temporary storage node, and a control logic circuit configured to control a dump operation between the data latches, the sensing latch, and the temporary storage node. The control logic circuit performs the dump operation from the data latches to the sensing latch while the first precharge circuit selectively precharges the first bit line.

Abstract: A display device including: pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver configured to supply a first scan signal to each of the first scan lines at a first frequency; a second scan driver configured to supply a second scan signal to each of the second scan lines at a second frequency corresponding to a driving frequency of the pixels; an emission driver configured to supply an emission control signal to each of the emission control lines at the first frequency; a data driver configured to supply a data signal to each of the data lines at the second frequency; and a timing controller configured to control the first scan driver, the second scan driver, the emission driver, and the data driver.

Abstract: The present disclosure relates to an anode for a lithium secondary battery and a lithium secondary battery including the same, wherein the anode includes an anode current collector; a first anode active material layer formed on at least one surface of the anode current collector and containing a mixture of natural graphite and artificial graphite in a weight ratio of 13˜34:66˜87 and a first binder as the anode active material; and a second anode active material layer formed on the first anode active material layer and containing a mixture of artificial graphite and a silicon-based compound in a weight ratio of 91˜99:1˜9 and a second binder as the anode active material.

Abstract: A refrigerator is proposed. The refrigerator includes a refrigerating compartment, a freezing compartment, and an ice-making compartment. The refrigerating compartment is configured to receive cool air from a refrigerating compartment side grill fan assembly, and the ice-making compartment is configured to be located any one refrigerating compartment door and to receive cool air from a freezing compartment side grill fan assembly with the freezing compartment. The refrigerating compartment side grill fan assembly is configured to supply a greater amount of cool air to the side where the ice-making compartment and the refrigerating compartment side grill fan assembly are located, and to perform cool air supply proportional to temperature influence provided from the ice-making compartment and the refrigerating compartment side grill fan assembly.

Abstract: Provided is a holographic display apparatus capable of providing an expanded viewing window when reproducing a holographic image via an off-axis technique. The holographic display apparatus includes a spatial light modulator comprising a plurality of pixels arranged two-dimensionally; and an aperture enlargement film configured to enlarge a beam diameter of a light beam coming from each of the plurality of pixels of the spatial light modulator. The beam diameter of each light beam enlarged by the aperture enlargement film may be greater than the width of an aperture of each pixel of the spatial light modulator.

Abstract: A display device includes a pixel including a first transistor connected between a first node and a second node, an emission driver supplying an emission control signal to an emission control line, a scan driver supplying first to fourth scan signals respectively to first to fourth scan lines, and a data driver supplying a data signal to a data line. The first scan signal controls a timing at which a voltage of a first power source is supplied to the first node, the second scan signal controls a timing at which the second node and a gate electrode of the first transistor are connected to each other, and the third scan signal controls a timing at which a voltage of a second power source is supplied to the gate electrode of the first transistor. The second scan signal overlaps the first scan signal and the third scan signal.

Abstract: A positive electrode material including a first positive electrode active material represented by Formula 1 and a second positive electrode active material represented by Formula 2, a positive electrode including the same, and a lithium secondary battery including the positive electrode are provided. The positive electrode material has a bimodal particle size distribution including large diameter particles and small diameter particles, and the difference in average particle diameter (D50) between the large diameter particles and the small diameter particles is 3 ?m or greater.

Abstract: Disclosed is an armrest for a seat, which is accommodated at a lateral side of a seat cushion at a standby position and adjusted in height with respect to the seat cushion at an operation position. The armrest includes: a base disposed adjacent to the seat cushion; a first module rotatably connected to the base and configured to rotate about a first rotation axis so that a height of the first module with respect to the seat cushion is adjusted; and a second module rotatably connected to the first module and configured to rotate about a second rotation axis traversing the first rotation axis so that the second module is disposed horizontally or vertically with respect to the seat cushion.

Abstract: A display device includes: a substrate including a display area and a non-display area; and a plurality of sub-pixels arranged in the display area and including portions of an electrode disposed over the display area. The plurality of sub-pixels includes a first sub-pixel and a second sub-pixel to emit light of the same color, a first portion of the electrode of the first sub-pixel has a thickness different from a thickness of a second portion of the electrode of the second sub-pixel, and the first sub-pixel has a size different from a size of the second sub-pixel.