Abstract: A coil electronic component includes a support substrate, a coil portion disposed on at least one surface of the support substrate, a body in which the support substrate and the coil portion are embedded, and first and second external electrodes disposed on a surface of the body and connected to both ends of the coil portion, respectively. A thickness of the body is 0.55 mm or less. The body includes a cover portion disposed on the coil portion. A ratio of a thickness of the coil portion to a thickness of the cover portion is 5:5 to 8:2.

Abstract: An optical film laminate includes a phase retardation layer, a polarizing layer laminated on the phase retardation layer, and a barrier layer disposed between the phase retardation layer and the polarizing layer or under the phase retardation layer. Iodine migrated from the polarizing layer is blocked by the barrier layer, and thus metallic members included in an image display device can be protected from corrosion.

Abstract: The present invention relates to a method for preparing dihydroxyammonium 5,5?-bistetrazole-1,1?-diolate. The method for preparing dihydroxyammonium 5,5?-bistetrazole-1,1?-diolate, according to one embodiment of the present invention, comprises the steps of: synthesizing 5,5?-bistetrazole-1,1?-diol dihydrate (1,1?-BTO) from ditetrahydropyranyl diazidoglyoxime (THP-DAG) by using a hydrochloric acid (HCl) solution in a first solvent; and reacting 1,1?-BTO with an amine solution so as to neutralize same and, simultaneously, obtaining dihydroxylammonium 5,5?-bistetrazole-1,1?-diolate (Thomas Klapotke explosive-50, TKX-50).

Abstract: The present invention relates to a method for preparing dihydroxyammonium 5,5?-bistetrazole-1,1?-diolate. The method for preparing dihydroxyammonium 5,5?-bistetrazole-1,1?-diolate, according to one embodiment of the present invention, comprises the steps of: synthesizing 5,5?-bistetrazole-1,1?-diol dihydrate (1,1?-BTO) from ditetrahydropyranyl diazidoglyoxime (THP-DAG) by using a hydrochloric acid (HCl) solution in a first solvent; and reacting 1,1?-BTO with an amine solution so as to neutralize same and, simultaneously, obtaining dihydroxylammonium 5,5?-bistetrazole-1,1?-diolate (Thomas Klapotke explosive-50, TKX-50).

Abstract: A crime type inference system based on text data, may include: a keywords dictionary construction unit configured to receive crime source data, and generate a crime type keywords dictionary by extracting crime keywords; a data set construction unit configured to generate a dataset for crime type learning by using the crime source data and the keywords dictionary; a crime type prediction model training unit configured to generate a crime type prediction model by using the dataset, and train the crime type prediction model; and a crime type inference unit configured to infer a crime type by using new crime data.

Abstract: A hard coating film may include a substrate and a hard coating layer provided on at least one surface of the substrate, in which, when the hard coating film is folded and unfolded 200,000 times with a bending radius of 1 mm in the direction in which the hard coating layer is oriented inwards under 60° C. and 90% relative humidity (RH), breakage does not occur, and the amount of change in transmission b* (chromaticity) of the film after UV irradiation for 100 hr using a 15 W UV-B lamp is 1.5 or less. The hard coating film may exhibit superior anti-curling properties, superior bending resistance under high-temperature and high-humidity conditions, and high light resistance, and can thus be applied not only to an image display device but also to a window for a flexible display device.

Abstract: An inductor includes a body, a coil pattern embedded in the body, a first external electrode and a second external electrode disposed on one surface of the body to be respectively connected to both ends of the coil pattern, and a support member disposed inside the body to support the coil pattern, wherein b/a?1.5, in which “a” denotes a distance from a central surface between top and bottom surfaces of the support member to a top surface of the body, and “b” denotes a distance from the central surface of the support member to a bottom surface of the body.

Abstract: The present invention relates to a hard coating film including a substrate and a hard coating layer provided on at least one surface of the substrate, in which the hard coating layer includes a fluorine-based UV-curable-functional-group-containing compound, a conductive polymer, and a solvent, the conductive polymer being included in a specific amount, and the surface roughness (Ra) value of the hard coating layer is 1 nm or less, whereby the hard coating film can simultaneously exhibit hard coating performance and antifouling performance even in the form of a single layer not including a separate antifouling layer, and is remarkably improved in an antifouling effect based on the low surface roughness thereof due to the absence of inorganic fine particles, and the improved antifouling effect can be effectively maintained even in the presence of variously changing environmental conditions, and to a window and an image display device using the same.

Abstract: A flexible window stack structure includes a substrate, a first hard coating layer formed on a surface of the substrate and a second hard coating layer formed on an opposite surface of the substrate. The first hard coating layer has a curing contraction greater than that of the second hard coating layer, and the second hard coating layer is disposed at an elongated side when the window stack structure is folded. Cracks may be prevented by a curl property of the first hard coating layer when being bent.

Abstract: The present invention relates to a hard coating film including a substrate and a hard coating layer provided on at least one surface of the substrate, in which the hard coating layer includes a cured product of a hard coating composition containing a fluorine-based UV-curable-functional-group-containing compound, dendritic acrylate, a conductive polymer, and a solvent, the conductive polymer being included in a specific amount, whereby the hard coating film is applicable to a flexible display device and can simultaneously exhibit hard coating performance and antifouling performance even in the form of a single layer that does not include a separate antifouling layer, and in particular, the high antifouling effect can be maintained even in the presence of variously changing environmental conditions, and to a window and an image display device using the same.

Abstract: The present disclosure relates to a hard coating film capable of providing excellent durability, elastic recovery rate, and abrasion resistance, by including a base layer; a first hard coating layer formed on at least one surface of the base layer and including a fluorine-based UV-curable functional group-containing compound; and a second hard coating layer formed between the base layer and the first hard coating layer and including inorganic particles; and an image display device including the hard coating film.

Abstract: A method for manufacturing a metal pattern, the method including forming a photosensitive layer pattern on a multilayer metal substrate including titanium and copper; providing an etchant composition on the multilayer metal substrate on which the photosensitive layer pattern is formed to form the source electrode and the drain electrode; and removing the photosensitive layer pattern, wherein the etchant composition includes a persulfate, a four-nitrogen ring compound, a two-chlorine compound, a fluorine compound, and water, and a weight ratio of the four-nitrogen ring compound and the two-chlorine compound is from about 1:0.5 to about 1:4.

Abstract: An inductor includes a body, a coil disposed inside the body, and first and second external electrodes disposed on one surface of the body to respectively be connected to both ends of the coil. A recess portion is disposed in a region between the first and second external electrodes on the one surface of the body.

Abstract: A crime type inference system based on text data, may include: a keywords dictionary construction unit configured to receive crime source data, and generate a crime type keywords dictionary by extracting crime keywords; a data set construction unit configured to generate a dataset for crime type learning by using the crime source data and the keywords dictionary; a crime type prediction model training unit configured to generate a crime type prediction model by using the dataset, and train the crime type prediction model; and a crime type inference unit configured to infer a crime type by using new crime data.

Abstract: An etchant composition of an embodiment includes a persulfate, a four-nitrogen ring compound, a two-chlorine compound, a fluorine compound and water, and has a weight ratio of the four-nitrogen ring compound and the two-chlorine compound of about 1:0.5 to about 1:4. The etchant composition may etch a multilayer metal substrate of titanium/copper and may be used for manufacturing a multilayer metal pattern and an array substrate having excellent properties of etched patterns.

Abstract: The present invention relates to a hard coating film and an image display apparatus comprising same, the hard coating film having a hard coating layer formed on at least one surface of a polyimide-based substrate, the hard coating layer comprising the cured product of a hard coating composition, wherein the hard coating composition comprises a solvent for swelling a polyimide-based resin, and the hard coating film is configured such that when the reflectivity thereof is measured in the range of 400 nm to 800 nm, the maximum amplitude difference in the oscillations of the reflectivity is controlled at 0.5% or less, and thus can prevent an interference pattern.

Abstract: The present invention relates to functional group-protected diazidoglyoxime (DAG), a method of synthesizing the same, and a method of synthesizing TKX-50 using functional group-protected DAG. Insensitive-DAG with enhanced insensitivity, instead of sensitive DAG, may be synthesized to reduce risks of processes and harmfulness arising from threats of explosion and fire accidents caused by impact, friction and static electricity, and thus it is possible to stably synthesize functional group-protected DAG.

Abstract: A hard coating film may be configured such that a hard coating layer including a cured product of a hard coating composition is formed on at least one surface of a substrate, in which the hard coating composition includes an ionic antistatic agent and a photopolymerization initiator containing a hydroxyethoxy group, the surface resistance of the hard coating layer is 1E+9 to 1E+12 ?/?, and the total transmittance thereof is 89.0% or more, thus exhibiting superior antistatic performance, superior optical performance such as high transmittance and the like, improved durability such as scratch resistance and the like, and superior bending resistance, making it applicable to a flexible image display device and to a window and an image display device including the same.

Abstract: A hard coating film may include a substrate and a hard coating layer provided on at least one surface of the substrate, in which, when the hard coating film is folded and unfolded 200,000 times with a bending radius of 1 mm in the direction in which the hard coating layer is oriented inwards under 60° C. and 90% relative humidity (RH), breakage does not occur, and the amount of change in transmission b* (chromaticity) of the film after UV irradiation for 100 hr using a 15 W UV-B lamp is 1.5 or less. The hard coating film may exhibit superior anti-curling properties, superior bending resistance under high-temperature and high-humidity conditions, and high light resistance, and can thus be applied not only to an image display device but also to a window for a flexible display device.

Abstract: The present invention relates to a hard coating film including a substrate and a hard coating layer provided on at least one surface of the substrate, in which the hard coating layer includes a fluorine-based UV-curable-functional-group-containing compound, a conductive polymer, and a solvent, the conductive polymer being included in a specific amount, and the surface roughness (Ra) value of the hard coating layer is 1 nm or less, whereby the hard coating film can simultaneously exhibit hard coating performance and antifouling performance even in the form of a single layer not including a separate antifouling layer, and is remarkably improved in an antifouling effect based on the low surface roughness thereof due to the absence of inorganic fine particles, and the improved antifouling effect can be effectively maintained even in the presence of variously changing environmental conditions, and to a window and an image display device using the same.