Abstract: A filter holder comprises: a plurality of filter frames disposed such that at least some thereof are adjacent to each other; and a folding member which supports filter frames, from among the plurality of filter frames, adjacent to each other so as to be rotatable with respect to each other. The folding member comprises: a folding part which has a predetermined thickness and is flexible so as to be foldable by means of rotation of the adjacent filter frames adjacent with respect to each other; and a plurality of edge parts which are connected to the respective sides of the folding part with the folding portion therebetween and rotate together with the adjacent filter frames, and wherein when viewed from a cross-section of the folding member, the edge parts may have a greater thickness than the folding part.

Abstract: An air filter comprises: a first filter frame in which a plurality of first chambers are formed; a second filter frame in which a plurality of second chambers are formed and which is arranged at the rear of the first filter frame; and a filter material which is accommodated in the plurality of first chambers and the plurality of second chambers to filter air, wherein the first filter frame and the second filter frame are arranged so that, when seen from the front, the center of each of the plurality of second chambers is out of line with the center of each of the plurality of first chambers, in the vertical direction.

Abstract: A display device includes a substrate, a first conductive layer on the substrate, the first conductive layer including a data signal line, a first insulating layer on the first conductive layer, a semiconductor layer on the first insulating layer, the semiconductor layer including a first semiconductor pattern, a second insulating layer on the semiconductor layer, and a second conductive layer on the second insulating layer, the second conductive layer including a gate electrode disposed to overlap the first semiconductor pattern, a transistor first electrode disposed to overlap a part of the first semiconductor pattern, wherein the transistor first electrode is electrically connected to the data signal line through a contact hole that penetrates the first and second insulating layers, and a transistor second electrode disposed to overlap another part of the first semiconductor pattern.

Abstract: An image sensor includes a semiconductor substrate having a first surface and a second surface opposing the first surface, a photodiode layer in the semiconductor substrate, a transfer gate on the photodiode layer, the transfer gate being on the first surface of the semiconductor substrate, a first trench recessed from the first surface of the semiconductor substrate at one side of the transfer gate, a first impurity injection region on at least a portion of a bottom surface of the first trench, the first impurity injection region not being on a sidewall of the first trench, and a lens on the second surface of the semiconductor substrate.

Abstract: An image sensor includes a first element separation film inside a substrate and having a mesh shape, pixel regions on the substrate defined by the first element separation film and including at least first and second pixel regions, and a second element separation film inside the substrate and partitioning the first pixel region into sub-pixel regions, the second element separation film not being in the second pixel region, wherein the first pixel region includes first photoelectric conversion elements, and a first color filter on the first photoelectric conversion elements, the first color filter being one of white, green, and blue color filters, and wherein the second pixel region includes second photoelectric conversion elements, and a second color filter on the second photoelectric conversion elements, the second color filter being different from the first color filter and one of red and white color filters.

Abstract: The present invention discloses an induction heating type dental filling device including a body unit grippable by a user, a filling unit containing a refillable filling material and connected to the body unit so that one side thereof is insulated from the body unit, a heating unit disposed in close contact with the filling unit and heating the filling material using induced current to convert the filling material into a liquid state, a pressing unit for pressing the heated filling material to discharge the heated filling material to the outside of the filling unit, and a shielding unit for shielding the heat and magnetic field of the heating unit. According to this configuration, heat loss through the filling unit may be prevented and clamping force for the body unit may be excellent, so that the efficiency of filling a filling material for dental treatment may be improved.

Abstract: An image sensor includes a substrate, a first isolation region defining a unit pixel, a first photoelectric conversion region in the unit pixel, a second photoelectric conversion region in the unit pixel, the second photoelectric conversion region spaced apart from the first photoelectric conversion region, a floating diffusion region, the floating diffusion region adjacent to the first surface of the substrate, a first transfer gate on the first surface of the substrate, the first transfer gate between the first photoelectric conversion region and the floating diffusion region, and a second transfer gate on the first surface of the substrate, the second transfer gate between the second photoelectric conversion region and the floating diffusion region. At least a part of the first transfer gate is buried in the substrate, and a bottom surface of the first transfer gate is different in height from a bottom surface of the second transfer gate.

Abstract: Disclosed is a microneedle including at least one tip portion that is capable of penetrating the skin and includes a liquid medicine melted in the skin; a base portion supporting the at least one tip portion; and at least one guide portion that is provided between the at least one tip portion and the base portion, is made of a non-soluble material, and is protruded in a direction in which the at least one tip portion penetrates the skin to couple with the at least one tip portion. In accordance with such a configuration, the at least one tip portion may be instantly separated in a short time, whereby superior liquid medicine supplyability is exhibited.

Abstract: The present invention discloses an induction heating type dental filling device including a body unit grippable by a user, a filling unit containing a refillable filling material and connected to the body unit so that one side thereof is insulated from the body unit, a heating unit disposed in close contact with the filling unit and heating the filling material using induced current to convert the filling material into a liquid state, a pressing unit for pressing the heated filling material to discharge the heated filling material to the outside of the filling unit, and a shielding unit for shielding the heat and magnetic field of the heating unit. According to this configuration, heat loss through the filling unit may be prevented and clamping force for the body unit may be excellent, so that the efficiency of filling a filling material for dental treatment may be improved.

Abstract: Disclosed is a microneedle for dental material delivery, the microneedle including a needle body portion; an active ingredient coating portion configured to coat the surface of the needle body portion, and including an active ingredient transferred to the skin tissue within a mouth; and a base portion configured to couple with the needle body portion, and to bend along a skin shape within the mouth, wherein the base portion includes at least one of polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE), polymethylmethacrylate (PMMA), ethylene vinyl acetate (EVA), polycaprolactone (PCL), polyurethane (PU), polyethylene terephthalate (PET), polyethylene glycol (PEG), polyvinyl alcohol (PVA), poly lactide (PLA), poly lactic-co-glycolic acid (PLGA), and polyglycolide (PGA).

Abstract: A method of manufacturing a microneedle according to the present disclosure includes a step of preparing a microneedle; a step of cooling the microneedle; and a step of inducing an endothermic reaction of the cooled microneedle, and coating the cooled microneedle with an active ingredient at least once. In accordance with such a configuration, coatability of the active ingredient can be improved due to an endothermic reaction without a separate drying process, thereby providing superior medication.

Abstract: A dental treatment instrument includes a bridge unit, and a first tip and a second tip unit each configured to be replaceable with respect to the bridge unit, where the bridge unit includes a first lengthwise groove formed in a lengthwise direction at one end of the bridge unit, a first circumferential groove extending from the first lengthwise groove in a first circumferential direction, a second lengthwise groove formed in the lengthwise direction at the other end of the bridge unit, and a second circumferential groove extending from the second lengthwise groove in a second circumferential direction different from the first circumferential direction, and the first tip unit includes a first coupling protrusion extending in a direction vertical to the lengthwise direction of the bridge unit, and the second tip unit includes a second coupling protrusion extending in a direction vertical to the lengthwise direction of the bridge unit.

Abstract: Disclosed is a dispenser device for dental material, the dispenser device including a body, a capsule configured to detachably couple with the body, and to accommodate a dental material, a piston configured to pressurize the capsule and to discharge the dental material from the capsule, an actuator configured to actuate the piston, and a heating unit provided to the body, and configured to locally heat the capsule. The heating unit includes a film heater configured to generate heat for heating the capsule provided to the body, and a heat transferor provided between the capsule and the film heater, configured to transfer the heat generated from the film heater to the capsule, and formed using a metal material.

Abstract: A vibrator for attaching composite resin to a tooth includes a housing, a vibration motor accommodated in the housing and configured to generate vibration, a micro-computer configured to control an operation and a vibration frequency of the vibration motor, a vibration tip configured to couple with one side of the housing to be exposed to an outside of the housing and to transfer the vibration to the composite resin, a vibration bushing provided at one end of the vibration tip and accommodated in the housing, and a control switch provided on one side of the housing and configured to generate a vibration motor control signal in response to a user contacting or pushing the control switch.

Abstract: Disclosed is a microneedle including at least one tip portion that is capable of penetrating the skin and includes a liquid medicine melted in the skin; a base portion supporting the at least one tip portion; and at least one guide portion that is provided between the at least one tip portion and the base portion, is made of a non-soluble material, and is protruded in a direction in which the at least one tip portion penetrates the skin to couple with the at least one tip portion. In accordance with such a configuration, the at least one tip portion may be instantly separated in a short time, whereby superior liquid medicine supplyability is exhibited.

Abstract: A method of manufacturing a microneedle according to the present disclosure includes a step of preparing a microneedle; a step of cooling the microneedle; and a step of inducing an endothermic reaction of the cooled microneedle, and coating the cooled microneedle with an active ingredient at least once. In accordance with such a configuration, coatability of the active ingredient can be improved due to an endothermic reaction without a separate drying process, thereby providing superior medication.

Abstract: Disclosed is a dental treatment instrument including a bridge unit configured to be gripped by a user; a plurality of tip units configured to be replaceable with respect to the bridge unit; and a coupling unit configured to selectively couple the tip unit with the bridge unit. The coupling unit is configured to couple the tip unit with the bridge unit by inserting and thereby rotating a portion of the tip unit relative to the bridge unit. Through this configuration, various types of dental tips may be easily replaced based on a selection of a user.

Abstract: Provided is a vibrator for attaching composite resin to a tooth, the vibrator including a housing; a vibration motor accommodated in the housing and configured to generate vibration; a micro-computer configured to control an operation and a vibration frequency of the vibration motor; and a vibration tip configured to couple with one side of the housing to be exposed to an outside of the housing, and to transfer the vibration to the composite resin.

Abstract: Disclosed is a microneedle for dental material delivery, the microneedle including a needle body portion; an active ingredient coating portion configured to coat the surface of the needle body portion, and including an active ingredient transferred to the skin tissue within a mouth; and a base portion configured to couple with the needle body portion, and to bend along a skin shape within the mouth, wherein the base portion includes at least one of polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE), polymethylmethacrylate (PMMA), ethylene vinyl acetate (EVA), polycaprolactone (PCL), polyurethane (PU), polyethylene terephthalate (PET), polyethylene glycol (PEG), polyvinyl alcohol (PVA), poly lactide (PLA), poly lactic-co-glycolic acid (PLGA), and polyglycolide (PGA).

Abstract: Disclosed is a dispenser device for dental material, the dispenser device including a body, a capsule configured to detachably couple with the body, and to accommodate a dental material, a piston configured to pressurize the capsule and to discharge the dental material from the capsule, an actuator configured to actuate the piston, and a heating unit provided to the body, and configured to locally heat the capsule. The heating unit includes a film heater configured to generate heat for heating the capsule provided to the body, and a heat transferor provided between the capsule and the film heater, configured to transfer the heat generated from the film heater to the capsule, and formed using a metal material.