Abstract: A cyclic compound represented by Chemical Formula 1 and an organic light emitting device using the same, the compound used as a material of an organic material layer of the organic light emitting device and providing improved properties of efficiency, driving voltage, and lifetime characteristics of the organic light emitting device.

Abstract: Provided is a novel compound of Chemical Formula 1: wherein: A is a thiazole ring or an oxazole ring fused with an adjacent ring: L1 is a single bond or a substituted or unsubstituted C6-60 arylene or C2-60 heteroarylene containing at least one of N, O and S; R1 is Ar1 to Ar4 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing at least one of N, O and S; L2 to L5 are each independently a single bond or a substituted or unsubstituted C6-60 arylene or C2-60 heteroarylene containing at least one of N, O and S; R2 is a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing at least one of N, O and S; D is deuterium; and n is an integer of 0 to 5, and an organic light emitting device comprising the same.

Abstract: A compound represented by Chemical Formula 1 and an organic light emitting device are provided. The compound is used as a material for an organic material layer of the organic light emitting device and provides improved efficiency, low driving voltage and enhanced lifetime.

Abstract: Provided is a novel compound of Chemical Formula 1: wherein: X1 to X3 are each independently N or CH, provided that at least two are N, Y1 and Y2 are independently O or S, L is a single bond, or a substituted or unsubstituted C6-60 arylene or C2-60 heteroarylene, provided that L is bonded to a position *1 or *2, Ar1 and Ar2 are independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O, and S, and R1 to R4 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, silyl, or a substituted or unsubstituted: C1-60 alkyl, C1-60 haloalkyl, C1-60 alkoxy, C1-60 haloalkoxy, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, C6-60 aryloxy, C2-60 heteroaryl containing one or more of N, O, and S, or adjacent substituents combine to form a C6-60 aromatic or non-aromatic ring, or a C2-60 heteroaromatic ring, and an organic light emitting device including the same.

Abstract: The present specification relates to a compound represented by the following Formula 1 and an organic light emitting device including the same. The compound is used as a material for an organic material layer of the organic light emitting device.

Abstract: An organic light emitting device including a first electrode, a second electrode provided opposite to the first electrode, and an organic material layer provided between the first electrode and the second electrode, wherein the organic material layer includes a hole transfer layer and an electron blocking layer, and the hole transfer layer and the electron blocking layer include a compound of Chemical Formula 1, the materials of the hole transfer layer and the electron blocking layer are different from each other, and one or more layers that are not the hole transfer layer and the electron blocking layer of the organic material layer include a compound of Chemical Formula 2.

Abstract: Provided is a novel compound Chemical Formula 1: wherein: L is a single bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C2-60 heteroarylene containing one or more of N, O and S; L1 and L2 are each independently a single bond or a substituted or unsubstituted C6-60 arylene, Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S, L? is a single bond or a substituted or unsubstituted C6-60 arylene, Q is a substituted or unsubstituted C6-60 aryl, R is deuterium or deuterium-substituted phenyl, and n is 1 to 8, and an organic light emitting device including the same. Organic light emitting devices that include the compound of Chemical Formula 1 as a host material for the light emitting layer exhibit remarkably improved lifetime characteristics without reducing luminous efficiency.

Abstract: The present disclosure relates to a method of collecting, by a terminal, learning data of an artificial intelligence model to perform dark web document classification, the method including: generating a first word set masked with a first identifier based on text included in a first dark web document; generating a second word set masked with a second identifier based on text included in a second dark web document; calculating a similarity by comparing the first word set and the second word set; and, based on the similarity, collecting the second dark web document in a second storage unit when the similarity does not exceed a specific value, and discarding the second dark web document when the similarity exceeds the specific value.

Abstract: A heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same, and the heterocyclic compound providing improved efficiency, low driving voltage, and improved lifetime characteristics of the organic light emitting device.

Abstract: Provided is a novel compound of Chemical Formula 1: wherein: A is a thiazole ring or an oxazole ring fused with an adjacent ring; L1 is a single bond, substituted or unsubstituted C6-60 arylene, or substituted or unsubstituted C2-60 heteroarylene containing at least of N, O and S; R1 is Ar1 to Ar4 are each independently substituted or unsubstituted C6-60 aryl or substituted or unsubstituted C2-60 heteroaryl containing at least one of N, O and S; L2 to L5 are each independently a single bond, substituted or unsubstituted C6-60 arylene, or substituted or unsubstituted C2-60 heteroarylene containing at least one of N, O and S; R2 is a substituted or unsubstituted C6-60 aryl or substituted or unsubstituted C2-60 heteroaryl containing at least of N, O and S; D is deuterium; and n is an integer of 0 to 5, and an organic light emitting device comprising the same.

Abstract: Provided is an organic light emitting device comprising an anode; a cathode; and a light emitting layer between the anode and the cathode, wherein the light emitting layer comprises a compound of the following Chemical Formula 1 and a compound of the following Chemical Formula 2: where A? is a naphthalene ring fused with an adjacent ring and is unsubstituted or substituted with deuterium, and the other substituents are described in the specification. Organic light emitting devices in which a compound of Chemical Formula 1 and a compound of Chemical Formula 2 are co-deposited as a host for a light emitting layer exhibit reduced driving voltage and increased efficiency and lifespan.

Abstract: Provided are novel compounds of Chemical Formula 1: where Y is S or O, A is naphthalene ring, L1 and L2 are each independently, a direct bond or a substituted or unsubstituted C6-60 arylene, Ar1, Ar2, Ar3 and Ar4 are each independently a substituted or unsubstituted C6-60 and or a substituted or unsubstituted C2-60 heteroaryl containing at least one of N, O, and S, R1 is each independently, hydrogen, deuterium, a substituted or unsubstituted C1-60 alkyl or a substituted or unsubstituted C6-60 aryl, and m is an integer of 0 to 6. The compounds exhibit high stability to electrons and holes. Also provided is, an organic light emitting device including the compounds, and the devices exhibit greatly improved lifetime characteristics while maintaining high efficiency because of the stability of the compounds of Chemical Formula 1.

Abstract: The present invention relates to a method for collecting data from a multi-domain in a data collection device. The method includes a step A of collecting data from a general web that is accessible through a search engine; a step B of collecting data from a dark web site that is not accessible with a general web browser and is accessible with preset specific software; and a step C of standardizing the collected data in a preset format and generating metadata for the collected data.

Abstract: Provided is a compound of Chemical Formula 1: wherein X1 is N or CRa, X2 is N or CRb, X3 is N or CRc, and one or more of X1 to X3 are N; Ar1 and Ar2 each independently is a substituted or unsubstituted alkyl, aryl group, or heteroaryl group; Ar3 is a substituted or unsubstituted aryl or heteroaryl group; L is a substituted or unsubstituted arylene group; R1 and R2 each independently is hydrogen, deuterium, or a substituted or unsubstituted alkyl or aryl group, or bond to each other to form a ring; R3 and Ra to Rc each independently is a hydrogen, deuterium, halogen, nitrile, nitro, hydroxyl, or a substituted or unsubstituted group selected from among a silyl, boron, alkyl, cycloalkyl, alkoxy, aryloxy, alkylthioxy, arylthioxy, alkylsulfoxy, arylsulfoxy, alkenyl, aralkyl, aralkenyl, alkylaryl, arylphosphine, phosphine oxide, aryl, or a heteroaryl group, or bond to adjacent groups to form a ring; a3 is 1 to 6; and n is 1 to 5, and an organic light emitting device comprising the same.

Abstract: Provided is a compound of Chemical Formula 1: wherein: one of A1 and A2 is a substituent of Chemical Formula 2: and the other one is a cyano group; R3 is a substituted or unsubstituted aryl or heteroaryl group; R4 to R7 are each independently a hydrogen, deuterium, halogen, or a substituted or unsubstituted: silyl, alkyl, amine, arylamine, alkylamine, aryl, or heteroaryl group; R1 and R2 are each independently a substituted or unsubstituted aryl or heteroaryl group; and (1) at least one of R1 to R3 is a substituted phenyl group, or a substituted or unsubstituted heteroaryl group or C10 or higher aryl group; or (2) R7 is deuterium and d is 1 or greater, and an organic light-emitting device comprising the same.

Abstract: Provided is an organic light-emitting device comprising: an anode; a cathode that is opposite to the anode; and a light emitting layer that is between the anode and the cathode, wherein the light emitting layer comprises a first compound of the following Chemical Formula 1, a second compound of the following Chemical Formula 2 and a third compound of the following Chemical Formula 3, as defined in the specification:

Abstract: A heterocyclic compound represented by Chemical Formula 1 or 2, and an organic light emitting device including the same, and the heterocyclic compound which is used as a material of an organic material layer of the organic light emitting device and provides improved efficiency, low driving voltage, and improved lifetime characteristics of the organic light emitting device.

Abstract: Provided is an organic light emitting device comprising: a positive electrode; a negative electrode opposite the positive electrode; and a light emitting layer between the positive electrode and negative electrode, wherein the light emitting layer comprises a first compound of Chemical Formula 1, a second compound of Chemical Formula 2, and a third compound of Chemical Formula 3 as defined in the specification:

Abstract: The present disclosure relates to a method of collecting, by a terminal, learning data of an artificial intelligence model to perform dark web document classification, the method including: generating a first word set masked with a first identifier based on text included in a first dark web document; generating a second word set masked with a second identifier based on text included in a second dark web document; calculating a similarity by comparing the first word set and the second word set; and, based on the similarity, collecting the second dark web document in a second storage unit when the similarity does not exceed a specific value, and discarding the second dark web document when the similarity exceeds the specific value.

Abstract: Provided is a compound of Chemical Formula 1: wherein: each X is independently N or CH, with two or more of the X being N; Y is O or S; and the other substituents are as described in the specification, where at least one of Ar1, Ar2 and R1 is substituted with at least one deuterium, or at least one of R2 is deuterium; and an organic light-emitting device including the same. When the compound is used as an organic light-emitting layer material, it exhibits excellent characteristics in terms of efficiency and lifetime. This is considered to be because the core dibenzofuran or dibenzothiophene group is substituted with the triazine and carbazole groups, and when at least one of Ar1, Ar2 and R1 is substituted with at least one deuterium, or at least one of R2 is deuterium, the compound exhibits increased electronic stability.