Abstract: A three-dimensional semiconductor device may comprise a first cell region, a second cell region, and a via plug region disposed between the first cell region and the second cell region; a word line stack disposed in the first cell region, the via plug region, and the second cell region, the word line stack including a plurality of word lines and a plurality of interlayer insulating layers which are alternately stacked; and a plurality of via plugs exclusively connected to the plurality of the word lines, respectively, by vertically penetrating through the word line stack in the via plug region. The via plugs may have an arrangement of a zigzag pattern in a row direction from a top view. The diameters of the via plugs may increase in the row direction.

Abstract: An electric compressor including: a motor unit configured to generate power; a compression unit configured to receive the power from the motor unit and to compress a refrigerant; an inverter configured to control the motor unit; and a cover configured to be coupled to one side of the inverter. The cover includes: a metal plate formed in a shape corresponding to the inverter; a first resin portion configured to be disposed on an inside of the metal plate; and a second resin portion configured to be disposed on an outside of the metal plate in such a way as to correspond to some areas of the first resin portion.

Abstract: A semiconductor memory device includes a cell region element separation film that is on a substrate and includes first and second cell region side walls; an active pattern that is on the substrate; a word line that is on the first side wall of the active pattern; a back gate electrode that is on the second side wall of the active pattern; a bit line that is electrically connected to the first side of the active pattern; and a data storage pattern that is electrically connected to the second side of the active pattern, where the word line includes an electrode part and a plug connecting part, and where the plug connecting part of the word line includes a first connecting extending part and a second connecting extending part.

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

Abstract: A control system of an autonomous vehicle for performing control for effective calculation by parallelizing operations between a plurality of modules of the autonomous vehicle includes the plurality of modules arranged in the autonomous vehicle and configured to perform a connective operation, and a module scheduling system configured to monitor operations of the plurality of modules, to parallelize the plurality of modules using an additional thread, and to control the plurality of modules to aperiodically operate using a pipelining method, and thus, processing capability per hour of a plurality of modules may be optimized by controlling parallel processing of the plurality of modules, and when an entire logic calculation period is longer than a sensor input period, an error due to delay that occurs in a data processing procedure between the modules is overcome.

Abstract: A cathode active material with controlled rheological properties for lithium secondary batteries. In particular, the cathode active material for a lithium secondary battery includes: a core part comprising a lithium metal oxide; and a coating layer covering at least a portion of a surface of the core part and comprising an inorganic compound.

Abstract: A method of managing identification information of a drone may include: generating an access message, wherein the access message includes an identifier for the ground identification device, which is a transmitter, an identifier for a receiver, an execution function command for classifying and defining a function to be performed, a serial number for transmitting information sequentially and retransmitting the information when transmission fails, data size information for informing a size of data to be transmitted, and transmission data; and transmitting the access message to an integrated management system corresponding to the identifier for the receiver.

Abstract: Provided are stretchable electronics and a method for manufacturing the same. The stretchable electronics may include a substrate, a plurality of electronic elements disposed to be spaced apart from each other on the substrate, and a wire structure disposed on the substrate to connect the plurality of electronic elements to each other. The wire structure may include an insulator extending from one of the electronic elements to the other of the adjacent electronic elements and a metal wire configured to cover a top surface and side surfaces of the insulator. The insulator may include at least one bent part in a plan view.

Abstract: An olivine-type positive active material for a lithium battery, a lithium battery having the olivine-type positive active material, and a method of manufacturing the olivine-type positive active material are provided. The olivine-type positive active material includes a plurality of particles represented by LixMyM?zXO4-wBw. M and M? are independently an element selected from the group consisting of Fe, Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Mo, Ti, Zn, Al, Ga, Mg, B, and the combination thereof, X is one element selected from the group consisting of P, As, Bi, Sb, and the combination thereof, B is one element selected from the group consisting of F, S, and the combination thereof, 0<x?1, 0<y?1, 0<z?1, 0<x+y+z?2, and 0?w?0.5. The particle is a secondary particle having a plurality of primary particles, a first carbon coating layer is on the surface of the primary particle and a second carbon coating layer is on the surface of the secondary particle, and carbon is dispersed inside the primary particle.

Abstract: Provided is a method for preparing a positive electrode active material for a lithium secondary battery, the method comprising: mixing and reacting a nickel source, a cobalt source, and an aluminum source, ammonia water, sucrose, and a pH adjusting agent to prepare a mixed solution; drying and oxidizing the mixed solution to prepare a positive electrode active material precursor; and adding a lithium source to the positive electrode active material precursor and firing them to prepare a positive electrode active material for a lithium secondary battery.

Abstract: The present invention provides an olivine-type positive active material precursor for a lithium battery that includes MXO4-zBz (wherein M is one element selected from the group consisting of Fe, Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, Mg, B, and a combination thereof, X is one element selected from the group consisting of P, As, Bi, Sb, and a combination thereof, B is one element selected from the group consisting of F, S, and a combination thereof, and 0?z?0.5) particles, and the precursor has a particle diameter of 1 to 20 ?m, a tap density of 0.8 to 2.1 g/cm3, and a specific surface area of 1 to 10 m2/g. The olivine-type positive active material prepared using the olivine-type positive active material precursor has excellent crystallinity of particles, a large particle diameter, and a high tap density, and therefore shows excellent electrochemical characteristics and capacity per unit volume.

Abstract: The present invention provides an olivine-type positive active material precursor for a lithium battery that includes MXO4-zBz (wherein M is one element selected from the group consisting of Fe, Ni, Co, Mn, Cr, Zr, Nb, Cu, V, Ti, Zn, Al, Ga, Mg, B, and a combination thereof, X is one element selected from the group consisting of P, As, Bi, Sb, and a combination thereof, B is one element selected from the group consisting of F, S, and a combination thereof, and 0?z?0.5) particles, and the precursor has a particle diameter of 1 to 20 ?m, a tap density of 0.8 to 2.1 g/cm3, and a specific surface area of 1 to 10 m2/g. The olivine-type positive active material prepared using the olivine-type positive active material precursor has excellent crystallinity of particles, a large particle diameter, and a high tap density, and therefore shows excellent electrochemical characteristics and capacity per unit volume.

Abstract: Disclosed herein is a 3V class spinel oxide with improved high-rate characteristics which has the composition Li1+x[MyMn(2?y)]O4?zSz (0?x?0.1, 0.01?y?0.5, 0.01?z?0.5, and M is Mn, Ni or Mg). Further disclosed is a method for preparing the 3V class spinel oxide by carbonate coprecipitation of starting materials, addition of sulfur, followed by calcining. The 3V class spinel oxide is spherical and has a uniform size distribution. A lithium secondary battery including the 3V class spinel oxide has a constant plateau at a potential of 3V and shows superior cycle characteristics.

Abstract: The present invention relates to a positive electrode active material for a lithium secondary battery having improved thermal stability, a method for producing the positive electrode active material, and a lithium secondary battery containing the same. The positive electrode active material may be represented by the following Chemical Formula 1 and contain particles having an average particle size of 200 nm to 1 ?m, wherein the surfaces of the particles are coated with a uniform carbon coating layer. LiaMn1-xMxPO4??[Chemical Formula 1] (Where, M is any one or a mixture of two or more selected from Mg, Fe, Co, Cr, Ti, Ni, Cu, Zn, Zr, Nb, and Mo, and a and x satisfy the following Equations: 0.9?a?1.1 and 0?x<0.5.).

Abstract: Disclosed herein is a 3V class spinel oxide with improved high-rate characteristics which has the composition Li1+x[MyMn(2?y)]O4?zSz (0?x?0.1, 0.01?y?0.5, 0.01?z?0.5, and M is Mn, Ni or Mg). Further disclosed is a method for preparing the 3V class spinel oxide by carbonate coprecipitation of starting materials, addition of sulfur, followed by calcining. The 3V class spinel oxide is spherical and has a uniform size distribution. A lithium secondary battery including the 3V class spinel oxide has a constant plateau at a potential of 3V and shows superior cycle characteristics.

Abstract: Disclosed herein is a 3V class spinel oxide with improved high-rate characteristics which has the composition Li1+x[MyMn(2?y)]O4?zSz (0?x?0.1, 0.01?y?0.5, 0.01?z?0.5, and M is Mn, Ni or Mg). Further disclosed is a method for preparing the 3V class spinel oxide by carbonate coprecipitation of starting materials, addition of sulfur, followed by calcining. The 3V class spinel oxide is spherical and has a uniform size distribution. A lithium secondary battery including the 3V class spinel oxide has a constant plateau at a potential of 3V and shows superior cycle characteristics.

Abstract: A method of manufacturing crystalline titanium dioxide (TiO2) powder, a method of a negative active material, and a negative active material and a rechargeable lithium battery including the crystalline titanium dioxide (TiO2) powder are provided. The method of manufacturing the crystalline titanium dioxide powder may include: preparing a titanyl chloride (TiOCl2) aqueous solution by adding titanium tetrachloride (TiCl4) to water at a temperature ranging from 0° C. to 10° C.; adding alcohol, urea, and a sphere-shaping agent to the titanyl chloride aqueous solution to prepare a mixture; and hydrothermally synthesizing the mixture under a pressure ranging from 1.5 atm to 5 atm at a temperature ranging from 80° C. to 155° C.

Abstract: In one embodiment, a method includes detecting, by an electronic device, a multi-touch gesture on a touch input area associated with the electronic device. The multi-touch gesture is moved across the touch input area. The method determines a distance that the multi-touch gesture is moved across the touch input area and also determines a speed of movement based on the determined distance. Then, media displayed in the electronic device is moved at the determined speed of movement based on detecting the multi-touch gesture on the touch input area. In another embodiment, a method causes movement of media being displayed in the electronic device for the number of units based on analyzing of a sequence of touches.

Abstract: Provided is a high-capacity positive electrode active material, and more particularly, a high-capacity positive electrode active material for a lithium secondary battery containing a composite oxide of the following Chemical Formula 1. LixNiyFezMnwO2 ??[Chemical Formula 1] (Where, x, y, and z satisfy the following Equations, respectively: 1?x?1.8, 0<y?0.13, 0<z?0.13, and 0.6?w?1.

Abstract: Provided is a method for preparing a positive electrode active material for a lithium secondary battery, the method comprising: mixing and reacting a nickel source, a cobalt source, and an aluminum source, ammonia water, sucrose, and a pH adjusting agent to prepare a mixed solution; drying and oxidizing the mixed solution to prepare a positive electrode active material precursor; and adding a lithium source to the positive electrode active material precursor and firing them to prepare a positive electrode active material for a lithium secondary battery.