Abstract: The present invention relates to an anthracene derivative compound having a characteristic structure in which an aryl group is introduced into a skeletal structure in which deuterium-substituted phenyl and anthracene are linked. In addition, the present invention relates to a high-efficiency, long-life organic light-emitting device of which the luminous efficiency and lifetime characteristics are significantly improved by employing a polycyclic compound having a characteristic structure as a dopant for a light-emitting layer while employing said compound as a host for the light-emitting layer.

Abstract: The present invention relates to an organic light-emitting diode in which a light-emitting layer comprises a compound represented by [chemical formula A] as a host and comprises a compound represented by [chemical formula 3], [chemical formula 4], [chemical formula 3-1] to [chemical formula 4-3] as a dopant, wherein [chemical formula 3], [chemical formula 4], [chemical formula 3-1] to [chemical formula 4-3] are the same as those described in the detailed description of the invention.

Abstract: A secondary battery includes an electrode assembly including a first separator, a negative electrode plate on the first separator, a second separator on the negative electrode plate, and a positive electrode plate on the second separator, the electrode assembly wound in a jelly-roll shape having a winding start end and a winding finish end, and having a flat portion, and curved portions respectively at one side of the flat portion and at another side of the flat portion, and a finishing tape attached to the winding finish end of the electrode assembly wound in the jelly-roll shape, wherein the positive electrode plate covers an outer surface of the electrode assembly wound in the jelly-roll shape, and has a finish end terminating on the flat portion.

Abstract: An escalator handrail washing device according to one embodiment of the present invention comprises: a case that accommodates an escalator handrail and a washing unit; a self-generation unit, arranged in the case, for converting kinetic energy of the escalator handrail into electric energy; and a communication unit for transferring information on an operating state of the escalator handrail to a control center. The washing unit includes a plurality of rollers. At least one roller is rotated without power, by frictional force generated by contacting a surface of the escalator handrail, in a first direction which is a reverse direction of a preset rotating direction of the escalator handrail. Other rollers are rotated by rotational force of the at least one roller. The other rollers can sterilize or wash the escalator handrail while rotating.

Abstract: A kiosk for providing footcare product recommendations comprises a base, a foot mat positioned in a recess in the base, a removable cover plate positioned over the recess for covering at least a portion of the foot mat, the cover plate comprising an opening leaving at least a portion of the foot mat uncovered, and one or more spacers located in the recess for positioning the foot mat in the recess.

Abstract: An escalator handrail washing device according to one embodiment of the present invention comprises: a case that accommodates an escalator handrail and a washing unit; a self-generation unit, arranged in the case, for converting kinetic energy of the escalator handrail into electric energy; and a communication unit for transferring information on an operating state of the escalator handrail to a control center. The washing unit includes a plurality of rollers. At least one roller is rotated without power, by frictional force generated by contacting a surface of the escalator handrail, in a first direction which is a reverse direction of a preset rotating direction of the escalator handrail. Other rollers are rotated by rotational force of the at least one roller. The other rollers can sterilize or wash the escalator handrail while rotating.

Abstract: A kiosk for providing footcare product recommendations comprises a base, a foot mat positioned in a recess in the base, a removable cover plate positioned over the recess for covering at least a portion of the foot mat, the cover plate comprising an opening leaving at least a portion of the foot mat uncovered, and one or more spacers located in the recess for positioning the foot mat in the recess.