Abstract: A method of preparing a sintered solid electrolyte includes (a) coprecipitating a mixed solution including a lanthanum precursor, a zirconium precursor, a gallium precursor, a complexing agent, and a pH adjuster to provide a solid electrolyte precursor; (b) washing and drying the solid electrolyte precursor to provide a washed and dried solid electrolyte precursor; (c) mixing the washed and dried solid electrolyte precursor with a lithium source to provide a mixture; (d) calcining the mixture to provide a calcined solid electrolyte, which is a gallium (Ga)-doped lithium lanthanum zirconium oxide (LLZO), as represented by Chemical Formula 1 below, LixLayZrzGawO12,??Chemical Formula 1 where 5?x?9, 2?y?4, 1?z?3, and 0<w?4; and (e) sintering the calcined solid electrolyte at a temperature ranging from 1,000° C. to 1,300° C. to provide the sintered solid electrolyte, wherein a ratio (M1:M2) of moles (M1) of lithium element to moles (M2) of gallium element ranges from 6.7:0.1 to 5.8:0.4.

Abstract: The present invention relates to an all-solid-state lithium secondary battery and a method of manufacturing the same. The all-solid-state lithium secondary battery includes a cathode, an anode, and a composite solid electrolyte layer between the cathode and the anode, wherein first and second LLZOs contained respectively in the cathode and the composite solid electrolyte layer are each independently aluminum-doped or undoped LLZO, and the battery of the invention can exhibit improved discharge capacity and cycle characteristics because both the cathode and the composite solid electrolyte layer contain a conductive polymer, a lithium salt and an inorganic ceramic solid electrolyte.

Abstract: A method of preparing a gallium-doped LLZO solid electrolyte includes (a) preparing a solid electrolyte precursor slurry by subjecting a mixed solution comprising a metal aqueous solution including lanthanum (La), zirconium (Zr) and gallium (Ga), a complexing agent and a pH controller to coprecipitation; (b) preparing a solid electrolyte precursor by washing and drying the solid electrolyte precursor slurry; (c) preparing a mixture by mixing the solid electrolyte precursor with a lithium source; (d) preparing a gallium-doped LLZO solid electrolyte represented by Chemical Formula 1 below by calcining the mixture at 600 to 1,000° C.; and (e) thereafter sintering the solid electrolyte represented by Chemical Formula 1 at 1,000 to 1,300° C. By adjusting amounts of starting materials and controlling flow rates of supplied materials, a high-precision cubic structure with improved sintering properties is obtained and ionic conductivity of the solid electrolyte is increased.

Abstract: Disclosed is a method of preparing a solid electrolyte, which includes (a) preparing a solid electrolyte precursor slurry by subjecting a mixed solution including a metal precursor solution, containing a lanthanum precursor, a zirconium precursor and an aluminum precursor, a complexing agent, and a pH controller to coprecipitation, (b) preparing a solid electrolyte precursor by washing and drying the solid electrolyte precursor slurry, (c) preparing a mixture by mixing the solid electrolyte precursor with a lithium source, and (d) preparing an aluminum-doped lithium lanthanum zirconium oxide (LLZO) solid electrolyte by calcining the mixture, and which is also capable of adjusting the aluminum content of a starting material to thus control sintering properties and of adjusting the composition of a precursor and a lithium source to thus control the crystal structure, thereby improving the ionic conductivity of the solid electrolyte.

Abstract: Provided are a composition for preventing or improving inflammation, the composition including an extract of a seed of soybean Glycine max (L.) Merrill cultivar SCEL-1, and a method of preventing occurrence of inflammation in a subject or improving inflammation in a subject, the method including injecting the composition to a subject.

Abstract: Disclosed is a method of preparing a solid electrolyte, the method including (a) preparing a solid electrolyte precursor by subjecting a mixed solution composed of a lanthanum precursor, a zirconium precursor, a gallium precursor, a complexing agent, and a pH adjuster to coprecipitation, (b) washing and drying the solid electrolyte precursor, (c) preparing a mixture by mixing the washed and dried solid electrolyte precursor with a lithium source, and (d) calcining the mixture to give a calcined solid electrolyte, which is a gallium (Ga)-doped lithium lanthanum zirconium oxide (LLZO), as represented by Chemical Formula 1. A solid electrolyte having increased ionic conductivity and an improved potential window can be provided using the method of preparing the solid electrolyte.

Abstract: The present invention relates to an all-solid-state lithium secondary battery and a method of manufacturing the same. The all-solid-state lithium secondary battery includes a cathode, an anode, and a composite solid electrolyte layer between the cathode and the anode, wherein first and second LLZOs contained respectively in the cathode and the composite solid electrolyte layer are each independently aluminum-doped or undoped LLZO, and the battery of the invention can exhibit improved discharge capacity and cycle characteristics because both the cathode and the composite solid electrolyte layer contain a conductive polymer, a lithium salt and an inorganic ceramic solid electrolyte.

Abstract: Disclosed is a gallium (Ga)-doped LLZO solid electrolyte represented by Chemical Formula 1 below, a method of preparing the same, and an all-solid-state lithium secondary battery including the same. In the solid electrolyte according to the present invention and the preparation method thereof, the amounts of gallium and lithium of starting materials are adjusted and the flow rate of materials to be supplied is controlled, thus forming a high-precision cubic structure and improving sintering properties, thereby increasing the ionic conductivity of the solid electrolyte. The lithium secondary battery including the solid electrolyte can exhibit superior charge/discharge characteristics and cycle characteristics.

Abstract: Disclosed is a bipolar all solid-state battery, which can efficiently control a manufacturing process thereof and can improve electric properties thereof. In an exemplary embodiment, the bipolar all solid-state battery includes a unit cell including a first current collector having a first surface and a second surface opposite to the first surface; a first active material coated on the first surface of the first current collector, a second current collector having a first surface and a second surface opposite to the first surface; a second active material coated on the first surface of the second current collector and facing the first active material; and an all solid-state electrolyte formed between the first active material and the second active material. When a plurality of the unit cells are stacked, the first current collector and the second current collector are connected to each other through surface contact.

Abstract: Disclosed is a method of preparing a solid electrolyte, which includes (a) preparing a solid electrolyte precursor slurry by subjecting a mixed solution including a metal precursor solution, containing a lanthanum precursor, a zirconium precursor and an aluminum precursor, a complexing agent, and a pH controller to coprecipitation, (b) preparing a solid electrolyte precursor by washing and drying the solid electrolyte precursor slurry, (c) preparing a mixture by mixing the solid electrolyte precursor with a lithium source, and (d) preparing an aluminum-doped lithium lanthanum zirconium oxide (LLZO) solid electrolyte by calcining the mixture, and which is also capable of adjusting the aluminum content of a starting material to thus control sintering properties and of adjusting the composition of a precursor and a lithium source to thus control the crystal structure, thereby improving the ionic conductivity of the solid electrolyte.

Abstract: A liquid crystal display device includes a liquid crystal panel including first and second substrates and a liquid crystal layer between the first and second substrates; a backlight unit under the liquid crystal panel; a bottom frame including a horizontal surface and first, second, third, and fourth side surfaces, the first side surface corresponding to a first edge of the liquid crystal panel and being opposite to the second side surface, wherein the liquid crystal panel has a size larger than the bottom frame such that a side of the liquid crystal panel protrudes beyond the bottom frame; a main frame including a first guide portion corresponding to the first edge and a second guide portion corresponding a second edge of the liquid crystal panel opposite to the first edge; and an adhesive covering the side of the liquid crystal panel and an outer side of the third and fourth side surfaces.

Abstract: A friction compensation logic of an MDPS (motor driven power steering) system to receive and to process a column torque signal and to output a friction compensation torque comprises: an accumulation speed adjusting portion to adjust an accumulation speed of a compensation section information set in the column torque signal; and a compensation amount adjusting portion in accordance with a vehicle speed to control so that the accumulation speed adjusting portion adjusts the accumulation speed of the compensation section information fast or slow in accordance with the vehicle speed, to adjust a compensation amount gain small or large in accordance with the vehicle speed, and to output a friction compensation torque.

Abstract: A liquid crystal display device includes a liquid crystal panel including first and second substrates and a liquid crystal layer between the first and second substrates; a backlight unit under the liquid crystal panel; a bottom frame including a horizontal surface and first, second, third, and fourth side surfaces, the first side surface corresponding to a first edge of the liquid crystal panel and being opposite to the second side surface, wherein the liquid crystal panel has a size larger than the bottom frame such that a side of the liquid crystal panel protrudes beyond the bottom frame; a main frame including a first guide portion corresponding to the first edge and a second guide portion corresponding a second edge of the liquid crystal panel opposite to the first edge; and an adhesive covering the side of the liquid crystal panel and an outer side of the third and fourth side surfaces.

Abstract: A liquid crystal display device includes a liquid crystal panel including first and second substrates and a liquid crystal layer between the first and second substrates; a backlight unit under the liquid crystal panel; a bottom frame including a horizontal surface and first, second, third, and fourth side surfaces, the first side surface corresponding to a first edge of the liquid crystal panel and being opposite to the second side surface, wherein the liquid crystal panel has a size larger than the bottom frame such that a side of the liquid crystal panel protrudes beyond the bottom frame; a main frame including a first guide portion corresponding to the first edge and a second guide portion corresponding a second edge of the liquid crystal panel opposite to the first edge; and an adhesive covering the side of the liquid crystal panel and an outer side of the third and fourth side surfaces.

Abstract: A friction compensation logic of an MDPS (motor driven power steering) system to receive and to process a column torque signal and to output a friction compensation torque comprises: an accumulation speed adjusting portion to adjust an accumulation speed of a compensation section information set in the column torque signal; and a compensation amount adjusting portion in accordance with a vehicle speed to control so that the accumulation speed adjusting portion adjusts the accumulation speed of the compensation section information fast or slow in accordance with the vehicle speed, to adjust a compensation amount gain small or large in accordance with the vehicle speed, and to output a friction compensation torque.

Abstract: A control apparatus of a motor-driven power steering (MDPS) includes: a torque sensor configured to measure a driver's steering torque inputted to a steering wheel and output a steering torque signal; a steering angle sensor configured to measure a steering angle of the steering wheel; a variable notch filter configured to reduce a torque ripple for the steering torque signal depending on a steering angle speed which is a change rate of the steering angle with respect to time; a vehicle speed sensor configured to measure vehicle speed; and a controller configured to receive the steering angle, the steering torque signal, and the vehicle speed from the steering angle sensor, the variable notch filter, and the vehicle sensor, respectively, and control drivability of a driving motor according to a driving speed of a vehicle.

Abstract: A liquid crystal display device includes a liquid crystal panel including first and second substrates and a liquid crystal layer between the first and second substrates; a backlight unit under the liquid crystal panel; a bottom frame including a horizontal surface and first, second, third, and fourth side surfaces, the first side surface corresponding to a first edge of the liquid crystal panel and being opposite to the second side surface, wherein the liquid crystal panel has a size larger than the bottom frame such that a side of the liquid crystal panel protrudes beyond the bottom frame; a main frame including a first guide portion corresponding to the first edge and a second guide portion corresponding a second edge of the liquid crystal panel opposite to the first edge; and an adhesive covering the side of the liquid crystal panel and an outer side of the third and fourth side surfaces.

Abstract: A control apparatus of a motor-driven power steering (MDPS) includes: a torque sensor configured to measure a driver's steering torque inputted to a steering wheel and output a steering torque signal; a steering angle sensor configured to measure a steering angle of the steering wheel; a variable notch filter configured to reduce a torque ripple for the steering torque signal depending on a steering angle speed which is a change rate of the steering angle with respect to time; a vehicle speed sensor configured to measure vehicle speed; and a controller configured to receive the steering angle, the steering torque signal, and the vehicle speed from the steering angle sensor, the variable notch filter, and the vehicle sensor, respectively, and control drivability of a driving motor according to a driving speed of a vehicle.

Abstract: A backlight device for a liquid crystal display includes a substrate, and a plurality of white, red, green, and blue light emitting diodes arranged on the substrate.

Abstract: A backlight unit adapted to enhance brightness and reduce manufacturing time and costs is disclosed. The backlight unit includes a bottom cover with an opened upper surface, a plurality of light emission diodes arranged on an inner edge of the bottom cover, a light guide plate disposed parallel to the plurality of light emission diodes, and a diffusion sheet disposed on the light guide plate. The diffusion sheet is provided to have an overlapped area with a support main which is combined with the bottom cover. Also, a reflection material layer is formed on an upper surface of the diffusion sheet corresponding to the overlapped area.