Abstract: A display apparatus including a substrate, a first sub-pixel, a second sub-pixel, and a third sub-pixel disposed on the substrate and configured to emit red light, green light, and blue light, respectively, partition walls disposed between the first sub-pixel, the second sub-pixel, and the third sub-pixel, and configured to not transmit light, in which the first sub-pixel, the second sub-pixel, and the third sub-pixel include a first light emitting cell, a second light emitting cell, and a third light emitting cell, respectively, and a height of each of the first, second, and third light emitting cells is lower than a height of the partition walls, and a difference between the height of the partition walls and the height of each of the first, second, and third light emitting cells is less than 100 ?m.

Abstract: An optical sensor includes a substrate, a photoelectric element disposed on the substrate and that includes a first electrode, an intermediate layer disposed on the first electrode, and a second electrode disposed on the intermediate layer, a barrier layer disposed on the second electrode, an insulating layer that covers the photoelectric element and the barrier layer, and a bias electrode disposed on the insulating layer and electrically connected to the second electrode. The barrier layer is spaced apart from the first electrode.

Abstract: The present invention relates to a door opening/closing device installed in a door of a building to be opened/closed about a hinge fixed at one side of the door. The opening/closing device controls the door to be manually opened and closed with an automatic returning device. When the door is opened by a rotating power adjusting device of the door, an oil pusher-plate in a rotary member pushes oil in an oil reservoir so that rotation speed of oil is adjusted by the pressure of oil passing through an oil passage hole, the end of the oil pusher plate and the inside wall of the oil reservoir. The door is opened in a joggling manner but slowly closed as rotating speed of the door gradually decreases, thereby solving problems such as injury occurring at the time of closing the door. A door fixing unit securely fixes the door when the door is closed or opened so as to prevent a gap between the door and a door frame when the door is closed and securely fix the door without movement when the door is opened.

Abstract: The present invention relates to a door opening/closing device installed in a door of a building to be opened/closed about a hinge fixed at one side of the door. The opening/closing device controls the door to be manually opened and closed with an automatic returning device. When the door is opened by a rotating power adjusting device of the door, an oil pusher-plate in a rotary member pushes oil in an oil reservoir so that rotation speed of oil is adjusted by the pressure of oil passing through an oil passage hole, the end of the oil pusher plate and the inside wall of the oil reservoir. The door is opened in a joggling manner but slowly closed as rotating speed of the door gradually decreases, thereby solving problems such as injury occurring at the time of closing the door. A door fixing unit securely fixes the door when the door is closed or opened so as to prevent a gap between the door and a door frame when the door is closed and securely fix the door without movement when the door is opened.

Abstract: A high efficiency compact gas-particulate separator is provided comprising: a bag filter disposed above and a cyclone disposed below,the bag filter including: a casing, a compressed air header into the casing; a diaphragm valve on the header; a blow tube connected to the header; a venturi for accelerating an ejected jet of compressed air from the blow tube and for inducing an inflow of secondary air; and a filter bag for collecting dusts mounted in the casing; the casing having a clean air outlet, andthe cyclone including: a dust-laden gas inlet; an outer cylinder for generating a centrifugal force, the cylinder being connected to the casing; an inner tube for letting a dust-laden gas pass from below upward into the casing; and a dust hopper for storing dust particles captured by centrifugal forces and dislodged dust cakes removed from the filter bag by cleaning.