Abstract: An organic light emitting device including: a substrate; a first electrode; a second electrode; and an organic layer interposed between the first electrode and the second electrode and including an emission layer, wherein one of the first electrode and the second electrode is a reflective electrode and the other is a semitransparent or transparent electrode, and wherein the organic layer includes a layer having at least one of the compounds having at least one carbazole group, and a flat panel display device including the organic light emitting device. The organic light emitting device has low driving voltage, excellent current density, high brightness, excellent color purity, high efficiency, and long lifetime.

Abstract: An optical imaging system includes a first lens having a convex image-side surface, a second lens having a concave object-side surface, a third lens, a fourth lens, and a fifth lens disposed sequentially from an object side. The optical imaging system satisfies 4.8<f/IMG_HT<9.0, where f is a focal length of the optical imaging system, and IMG_HT is half a diagonal length of an imaging surface of an image sensor.

Abstract: The present disclosure relates to an autonomous forklift truck capable of recognizing a location of the autonomous forklift truck and a location of an obstacle in a work area, and the truck includes a location recognition sensor to detect the location of the autonomous forklift truck through a laser emitted and reflected from a reflective marking equipped in a structure, a first sensor to detect an obstacle near a work area floor, a second sensor to detect an obstacle at a predetermined height from the floor, a fork laser sensor to measure a distance from a rack where a pallet is loaded or a distance from the pallet, a first fork photoelectric sensor and a second fork photoelectric sensor, and a control unit to process sensing signals inputted from all the sensors and control the driving and attachments of the autonomous forklift truck.

Abstract: Disclosed is a method for synthesizing copper sulfide nano powder using plasma synthesis. The method comprises providing a copper compound to a plasma apparatus, adding a sulfur, and performing a plasma process with respect to the copper compound and the sulfur for synthesizing a nano copper sulfide.

Abstract: Disclosed is a method for synthesizing copper sulfide nano powder using plasma synthesis. The method comprises providing a copper compound to a plasma apparatus, adding a sulfur, and performing a plasma process with respect to the copper compound and the sulfur for synthesizing a nano copper sulfide.

Abstract: The present invention relates to a spacer fabric with advanced cushionability, flexibility, and thermal conductivity, and a method of fabricating the same. In accordance with the present invention, the spacer fabric is useful as a car seat fabric. In particular, the spacer fabric is applicable to a car seat equipped with an actuator and a heating/cooling apparatus inside, due to the advanced flexibility for transferring the actuator moving effect to the body, the increased cushionability for minimizing the hardness of the surface of the device, and the high thermal conductivity for effectively transferring the quick heating/cooling effect to the body.

Abstract: Disclosed herein is a banner equipped with an elastic frame. The banner equipped with the elastic frame includes: a banner printed with advertising contents; a frame receiving part disposed on the edge of the banner; a frame inserted into the frame receiving part and forming the exterior shape of the banner using its elasticity; and pole mounting portions disposed on the frame receiving part at a predetermined interval for mounting poles of a banner supporter for supporting the banner, wherein the frame is an elastic body, and its both ends are not connected integrally in a loop shape but separated from each other.

Abstract: The present invention relates to a spacer fabric with advanced cushionability, flexibility, and thermal conductivity, and a method of fabricating the same. In accordance with the present invention, the spacer fabric is useful as a car seat fabric. In particular, the spacer fabric is applicable to a car seat equipped with an actuator and a heating/cooling apparatus inside, due to the advanced flexibility for transferring the actuator moving effect to the body, the increased cushionability for minimizing the hardness of the surface of the device, and the high thermal conductivity for effectively transferring the quick heating/cooling effect to the body.