Abstract: Provided are a resin comprising a unit of Chemical Formula 1, a method for preparing the same, a resin composition comprising the same, and a molded article comprising the resin composition, wherein all the variables are described herein.

Abstract: A polycarbonate resin including a unit of Chemical Formula 1 and a unit of Chemical Formula 2, a method for preparing the same, a polycarbonate resin composition including the same, and a molded article are disclosed herein: Ar1 and Ar2 are independently an aryl group, or a heteroaryl group, R1 is hydrogen, deuterium, a halogen group, a cyano group, an alkyl group, a cycloalkyl group, an alkoxy group, a silyl group, an aryl group, or a heteroaryl group, R2 and R3 are different from each other, r1 is 1 or 2, r2 and r3 are each an integer from 1 to 4, L1 and L2 are independently an arylene group, X1 to X8 are independently O or S, Z1 to Z4 are independently an alkylene group, or a cycloalkylene group, and a, b, c and d are independently an integer from 1 to 10.

Abstract: The present invention relates to a method of preparing a diene-based rubbery polymer, comprising initiating and performing polymerization of monomers in the presence of an amine-based compound and a thermal decomposition initiator, wherein the amine-based compound is one or more selected from the group consisting of a compound represented by Chemical Formula 1 and a compound represented by Chemical Formula 2, a content of the amine-based compound is 0.03 to 0.70 parts by weight, based on 100 parts by weight of the total amount of monomers added during preparation of the diene-based rubbery polymer, the monomer may be a diene-based monomer, or a diene-based monomer and a vinyl aromatic monomer, and the polymerization is initiated at 25 to 50° C.

Abstract: A display device and a method of fabricating the same are provided. The display device includes a substrate, a first electrode on the substrate, a second electrode on the substrate and spaced apart from the first electrode, a plurality of light emitting elements, at least a portion of each of which is between the first electrode and the second electrode, and contact electrodes on the first electrode, the second electrode and the light emitting elements, the contact electrodes including a conductive polymer, wherein the contact electrodes include a first contact electrode which contacts an end portion of a first portion of the light emitting elements and the first electrode and a second contact electrode which contacts an end portion of a second portion of the light emitting elements, and the second electrode and is spaced apart from the first contact electrode.

Abstract: Cathode active materials for lithium secondary batteries and lithium secondary batteries including the cathode active materials are disclosed. In some implementations, a cathode active material for a lithium secondary battery includes a lithium metal phosphate particle having a crystallite size in a range from 150 nm to 450 nm in a direction of a crystallographic plane (020) as measured by an X-ray diffraction (XRD) analysis. In some implementations, a lithium secondary battery includes a cathode including a cathode active material layer that includes a cathode active material for a lithium secondary battery, and an anode facing the cathode. In some implementations, an electrode crystallite size ratio defined by Equation 4 is in a range from 0.5 to 0.9.

Abstract: Provided is a method of preparing a diene-based rubber polymer, which includes: adding each of a diene-based monomer, a molecular-weight regulator, an initiator, and an emulsifier to a reactor a first time and carrying out polymerization; adding a molecular-weight regulator to the reactor a second time when a polymerization conversion rate of 48 to 72% is reached and carrying out polymerization; adding a diene-based monomer to the reactor a second time when a polymerization conversion rate of 63 to 77% is reached and carrying out polymerization; adding each of an initiator and an emulsifier to the reactor a second time when a polymerization conversion rate of 68 to 81% is reached and carrying out polymerization; and adding each of an initiator and an emulsifier to the reactor a third time when a polymerization conversion rate of 85 to 91% is reached and carrying out polymerization.

Abstract: A display apparatus comprises a display panel for displaying an image, a touch sensor above the display panel, at least one opening formed in the touch sensor, and a shielding member formed in the touch sensor to cover the opening.

Abstract: A resin including a unit of Chemical Formula 1, a method for preparing the same, a resin composition including the same, and a molded article including the resin composition are described: wherein all the variables are described herein.

Abstract: Provided is a method of decomposing phenol-based by-product, and more particularly, a method of decomposing phenol-based by-product including: introducing a phenol-based by-product stream, a first stream of a side discharge stream from a decomposition device, and a process water stream to a mixing device and mixing the streams; introducing a discharge stream from the mixing device to a layer separation device to phase-separate the discharge stream into an oil phase and an aqueous phase; passing an oil stream discharged from the layer separation device through any one or more of a first heat exchanger and a second heat exchanger and introducing the oil stream to the decomposition device to carry out decomposition; and supplying the first stream of the side discharge stream from the decomposition device to the mixing device, forming a mixed stream of a second stream of the side discharge stream with a lower discharge stream and discharging the mixed stream, and recovering effective components from an upper disc

Abstract: A method of washing an ion exchange resin, including washing an ion exchange resin with deionized water (DI water) one or more times to prepare a washed ion exchange resin; and storing the washed ion exchange resin in dionized water. A method for producing bisphenol A using the method of washing an ion exchange resin. The resulting bisphenol A has improved purity, thermal stability, color, and the like.

Abstract: The present invention provided a positive electrode active material for a lithium secondary battery including lithium cobalt oxide particles. The lithium cobalt oxide particles include lithium deficient lithium cobalt oxide having Li/Co molar ratio of less than 1, belongs to an Fd-3m space group, and having a cubic crystal structure, in surface of the particle and in a region corresponding to a distance from 0% to less than 100% from the surface of the particle relative to a distance (r) from the surface to the center of the particle. In the positive electrode active material for a lithium secondary battery according to the present invention, the intercalation and deintercalation of lithium at the surface of a particle may be easy, and the output property and rate characteristic may be improved when applied to a battery. Accordingly, good life property and the minimization of gas generation amount may be attained even with large sized positive electrode active material.

Abstract: A semiconductor chip disposed on a wafer may be tested by using a probe card provided at an upper portion of a chamber for testing the semiconductor chip. A signal generated from a test module is transmitted to a needle included in the probe card, so that abnormality in the semiconductor chip may be tested.

Abstract: The present invention is related to a brain targeted drug delivery system (DDS). The DDS penetrates the blood brain barrier and delivers the drug by using extracellular vesicles (bEVs) derived from brain vascular endothelial cells. The present invention provides a composition for enhancing PDT efficacy comprising bEV loaded with TPP-Ce6. The bEV of the present invention penetrates the BBB effectively without cytotoxicity, and the bEV loaded with TPP-Ce6 is selectively absorbed by brain tumor cells, and releases TPP-Ce6 under a light condition, and the TPP-Ce6 accumulates preferably in mitochondria first. This invention is expected to enhance therapeutic efficacy of PDT and minimize side effects in the treatment of brain tumors.

Abstract: The present disclosure relates to a positive electrode active material for a secondary battery, the positive electrode active material being a lithium composite transition metal oxide particle including nickel (Ni) and cobalt (Co) and including at least one of manganese (Mn) and aluminum (Al), wherein the lithium composite transition metal oxide particle includes 60 mol % or greater of the nickel (Ni) in all metals excluding lithium, a doping element is doped on the lithium composite transition metal oxide particle, and the particle intensity of the lithium composite transition metal oxide particle is 210 MPa to 290 MPa.

Abstract: The present invention relates to a method for preparing a conjugated diene-based polymer, which includes a step of preparing a conjugated diene-based polymer by initiating and carrying out polymerization while continuously adding conjugated diene-based monomers to a reactor, and in which an emulsifier is dividedly added before the initiation of the polymerization and when a polymerization conversion rate of 31% to 80% is reached. More particularly, the present invention relates to: a method for preparing a conjugated diene-based polymer and a method for preparing a graft copolymer including the method for preparing a conjugated diene-based polymer, by which a total usage amount of an emulsifier can be reduced.

Abstract: The present invention relates to an ice maker. Specifically, according to one embodiment of the present invention, an ice maker may be provided, comprising: a refrigerant pipe having formed therein a pipe flow path for a refrigerant to flow through; a finger protruding from the refrigerant pipe and having formed therein a finger space that communicates with the pipe flow path for the refrigerant to flow through; a heater comprising a heating part provided in the refrigerant pipe to heat the finger, and an extension part extending from one end of the heating part to the outside of the refrigerant pipe; a heater holder that surrounds at least a portion of the extension part; and a sealing element for preventing the introduction of moisture through a gap between the outer peripheral surface of the extension part and the inner peripheral surface of the heater holder.

Abstract: A display device includes: a base layer including a first surface, and a second surface; a plurality of pixels on the first surface; and a plurality of first lines on the first surface. The base layer includes: a first base layer; an etch stop layer on the first base layer; a plurality of second lines on the etch stop layer; and a second base layer on the etch stop layer and the second lines. The first base layer, the etch stop layer, the second lines, and the second base layer are sequentially stacked, and the first lines are electrically connected to the second lines through first contact holes.

Abstract: A display device includes: a substrate; a first bank on the substrate, at least portions of the first bank being spaced apart from each other; a plurality of first electrodes on the substrate, at least portions of the first electrodes being on portions of the first bank; a second electrode on the substrate, the second electrode being spaced apart from and between adjacent ones of the first electrodes; and a plurality of light emitting elements on the first electrodes and the second electrode.

Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium composite oxide particle that contains lithium and transition metals including an excess amount of nickel. The lithium composite oxide particle satisfies a predetermined XRD peak area relation. A lithium secondary battery using the cathode active material and providing improved stability and durability is provided.

Abstract: Provided is a portable scalp sensing device including a camera module, wherein the camera module includes a camera part including an image sensor and a lens, a light diffusion member disposed on an optical axis of the camera part, a blue-cut filter disposed between the camera part and the light diffusion member to block light of a predetermined wavelength that is incident on the camera part, a UV light source, and a white light source, the light diffusion member may guide light diffused from each of the white light source and the UV light source to illuminate a measurement target region with the light, and the camera part may obtain an image of the measurement target region illuminated by the light.