Abstract: Provided is a heterocyclic compound of Chemical Formula 1: where X1 is O or S; L1 and L2 are each independently a single bond, a substituted or unsubstituted phenylene, a substituted or unsubstituted naphthylene, or a substituted or unsubstituted biphenylenyl; Y1 to Y3 are each independently N or CR3, provided that at least one of Y1 to Y3 is N; and Ar1a and Ar1b are each independently a substituted or unsubstituted C6-60 aryl or a substituted or unsubstituted C1-60 heteroaryl containing 1 to 3 heteroatoms selected from the group consisting of N, O and S; and an organic light emitting device comprising the same, where the compound of Chemical Formula 1 can be used as a material of an organic material layer of an organic light emitting device and can exhibit improved efficiency, a low driving voltage and/or improved lifetime characteristics of the organic light emitting device.

Abstract: Provided is an organic light emitting device having improved driving voltage, efficiency and lifetime, the organic light emitting device comprises: a cathode; an anode; and at least one light emitting layer interposed between the cathode and the anode, wherein the light emitting layer includes a first host compound of the following Chemical Formula 1-1 or Chemical Formula 1-2 and a second host compound of the following Chemical Formula 2: where the substituents are as defined in the specification.

Abstract: Provided is a heterocyclic compound Chemical Formula 1 or 2: and an organic light emitting device comprising the same.

Abstract: The present invention provides an organic light emitting device having improved driving voltage, efficiency and lifetime.

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein: X1 is O or S; L1 is a single bond or an unsubstituted phenylene; L2 is a single bond, or a substituted or unsubstituted: phenylene, naphthylene, or biphenylenyl; Y1 to Y3 are each independently N or CR3, where at least one is N; Ar1a and Ar1b are each independently a substituted or unsubstituted: C6-60 aryl or C1-60 heteroaryl containing 1 to 3 heteroatoms selected from N, O and S; R1 and R2 are each independently hydrogen, deuterium, cyano, or a substituted or unsubstituted C1-10 alkyl; each R3 is independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C1-60 haloalkyl, C1-60 alkoxy, a C1-60 haloalkoxy, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, C6-60 aryloxy, or a C1-60 heteroaryl containing at least one heteroatom selected from N, O and S; and an organic light emitting device comprising the same.

Abstract: The present disclosure provides an insulating layer for a multilayer printed circuit board, a multilayer printed circuit board including the same, and a method for fabricating the same. The insulating layer of the present disclosure includes a polymer resin layer containing a melamine derivative, and thus may have excellent adhesion to a patterned metal layer.

Abstract: Provided is a compound of Chemical Formula 1 or 2: wherein: X1 to X3 are N or CH, with the proviso that at least one of X1 to X3 is N; Y is O or S; L1 and L2 are each independently a single bond or a substituted or unsubstituted C6-60 arylene; and Ar is a substituted or unsubstituted C1-60 alkyl, a substituted or unsubstituted C1-60 haloalkyl, a substituted or unsubstituted C3-60 cycloalkyl, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one to three heteroatoms selected from the group consisting of N, O, and S, and an organic light emitting device including the same.

Abstract: Provided is a compound of Chemical Formula 1 or 2: wherein: X1 to X3 are N or CH, with the proviso that at least one of X1 to X3 is N; Y is O or S; L1 and L2 are each independently a single bond or a substituted or unsubstituted C6-60 arylene; and Ar is a substituted or unsubstituted C1-60 alkyl, a substituted or unsubstituted C1-60 haloalkyl, a substituted or unsubstituted C3-60 cycloalkyl, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one to three heteroatoms selected from the group consisting of N, O, and S, and an organic light emitting device including the same.

Abstract: Provided is a heterocyclic compound Chemical Formula 1 or 2: and an organic light emitting device comprising the same.

Abstract: This disclosure relates to a base film, a laminated structure including the same, and a display device. More specifically, this disclosure relates to a base film that includes a polymer having a cyclic olefin-based repeat unit containing exo-isomers above a specific content and a copolymer including a styrene-based repeat unit and a maleimide-based repeat unit, exhibits a high glass transition temperature and thus has excellent heat resistance, and has high light transmittance, a laminated structure including the same, and a display device.

Abstract: The present invention provides an organic light emitting device having improved driving voltage, efficiency and lifetime.

Abstract: The present invention provides an organic light emitting device having improved driving voltage, efficiency and lifetime.

Abstract: The present invention relates to a novel heterocyclic compound and an organic light emitting device comprising the same.

Abstract: The present invention relates to a reverse wavelength dispersion compound, a reverse wavelength dispersion composition including the same, and an optically anisotropic body including the same. The reverse wavelength dispersion composition according to the present invention can provide a stronger and more stable reverse wavelength dispersion property, and makes it possible to provide an optically anisotropic body having excellent optical properties.

Abstract: The present invention relates to a reverse wavelength dispersion compound, a reverse wavelength dispersion composition including the same, and an optically anisotropic body including the same. The reverse wavelength dispersion composition according to the present invention can provide a stronger and more stable reverse wavelength dispersion property, and makes it possible to provide an optically anisotropic body having excellent optical properties.

Abstract: This disclosure relates to a base film, a laminated structure including the same, and a display device. More specifically, this disclosure relates to a base film that includes a polymer having a cyclic olefin-based repeat unit containing exo-isomers above a specific content and a copolymer including a styrene-based repeat unit and a maleimide-based repeat unit, exhibits a high glass transition temperature and thus has excellent heat resistance, and has high light transmittance, a laminated structure including the same, and a display device.

Abstract: The present invention relates to a base film, a laminated structure comprising the same, and a display device. More specifically, a transparent base film including a polymer having a cyclic olefin-based repeating unit including an exo isomer in a predetermined content or more to show a high glass transition temperature, such that thermal resistance may be excellent, and light transmittance may be high, and a laminated structure comprising the same, and a display device.