Abstract: Disclosed is a method of producing lithium sulfide (Li2S) without using hydrogen sulfide (H2S) gas. Particularly, the method of producing lithium sulfide (Li2S) includes preparing a starting material including a metal oxide by subjecting a mixed powder including an inorganic compound containing lithium and oxygen, a metal reducing agent, and sulfur (S) to synthesis reaction using mechanical force, preparing a mixed solution by mixing the starting material and a solvent, and obtaining a lithium sulfide (Li2S) powder by removing the metal oxide from the mixed solution and then performing drying.

Abstract: A light emitting element includes an N-type semiconductor layer including a zinc oxide semiconductor, a P-type semiconductor layer, and an active layer disposed between the N-type semiconductor layer and the P-type semiconductor layer. The active layer has a quantum well including a barrier layer and a well layer including zinc oxide.

Abstract: The present application may provide a curable composition comprising a filler composition, an acryl monomeric component and an acryl polymeric component, wherein one or more of the acryl monomeric component and polymerization units of the acryl polymeric component comprises a cyclic ether-based acryl compound. Such curable composition is capable of ensuring excellent storage stability regardless of environmental changes by having excellent resistance to moisture and humidity; exhibits room temperature curability and quick curability in a high humidity environment even if an excessive amount of a filler composition is included; exhibits appropriate viscosity, thixotropy, adhesion and/or thermal conductivity before and after curing; and is capable of forming a cured product which is not brittle and flexible by adjusting hardness.

Abstract: The present disclosure relates to a thermosetting resin composition, an encapsulation film, and an organic electronic device comprising the same, which is capable of forming a structure that can block moisture or oxygen flowing into an organic electronic device from the outside, and is intended to implement heat resistance and durability of the organic electronic device under severe conditions such as high temperatures.

Abstract: A light-emitting element and a display device including the same are provided. The light-emitting element includes a first semiconductor layer doped with a first-type dopant, a second semiconductor layer doped with a second-type dopant, and a light-emitting layer disposed between the first semiconductor layer and the second semiconductor layer. The light-emitting layer includes at least one first material layer and at least one second material layer, wherein the at least one first material layer includes a zinc oxide (ZnO)-based material, and the at least one second material layer includes a gallium nitride (GaN)-based material.

Abstract: A method for manufacturing a light emitting element includes forming a first semiconductor structure including a first semiconductor layer doped with a first conductivity type dopant disposed on a base substrate, a light emitting layer disposed on the first semiconductor layer, and a second semiconductor layer disposed on the light emitting layer and doped with a second conductivity type dopant; forming a second semiconductor structure spaced apart from another second semiconductor structure on the base substrate by etching the first semiconductor structure in a direction perpendicular to a surface of the base substrate; and activating a second conductivity type dopant in the second semiconductor layer of the second semiconductor structure to form a light emitting element core.

Abstract: The tilting angle adjusting device comprises a leg provided with a supporting portion, a guide portion with a guide groove and a supporting shaft a plurality of supporting grooves; an adjusting member including a lug and a supporting piece; and a first and a second compressive springs. In such a projector incorporating therein the inventive tilting angle adjusting device, the tilting angle is adjusted by the flanking prongs of the supporting piece of the adjusting member on the supporting grooves.

Abstract: An inclination angle sensing apparatus for use in a projector includes a plurality of inclination angle sensing devices, each of the inclination angle sensing devices having a moving member, an elastic means, a rack, an idle gear, a sensor pinion, a pair of fixing members, a circuit substrate and an optical sensing unit. In the inclination angle sensing device, the moving member is coupled to the rack and the sensor pinion is engaged with the rack. The sensor pinion has a reflector consisting of a light transmitting and a light reflecting portions, and the optical sensing unit has a portion for emitting a light beam to the reflector on the sensor pinion and a portion for receiving the light beam therefrom. The optical sensing unit determines the amount of rotation the sensor pinion has undergone by the receiving portion thereof counting the number of times the light beam encounters the light transmitting or the light reflecting slices of the sensor pinions during the rotation.

Abstract: An actuator for tilting the plane of a mounted mirror comprises a substrate having an opening filled with a first metalization; a pair of electrodisplacive members mounted on the substrate, each electrodisplacive member having a side surface in a facing relationship with a second metalization formed therebetween and a grooved surface opposite therefrom with a third metalization formed thereon, the electrodisplacive members further having a polarization selected so that a voltage applied between the second metalization and the third metalization causes one of the electrodisplacive members to vertically expand and the other to vertically contract, thereby tilting the plane of the mounted mirror; a metal layer having predetermined dimensions, provided underneath the second metalization; and an electrically conductive adhesive paste layer disposed between the metal layer and the first metalization for providing an electrical contact therebetween.