Abstract: An organic light emitting diode (OLED) includes a first emitting material layer disposed adjacently to a first electrode and a second emitting material layer disposed adjacently to a second electrode. The first emitting material layer includes a first compound having high affinity to holes and a second compound of thermally activated delayed fluorescent material, and the second emitting material layer includes a fourth compound having high affinity to electrons and implementing triplet-triplet annihilation. Two emitting material layers having adjusted energy levels allow the OLED to lower its driving voltages and improve its luminous efficiency and luminous lifetime.

Abstract: Provided are an IoT device and an IoT communication method. The IoT device may: be connected to a server via NAT; execute a first session for service connection; and execute a second session for calculating a particular keep-alive value corresponding to a period in which an IP address mapped by the NAT expires. The present invention can minimize transmission of a keep-alive value of an IoT device, enables an IoT device to share a particular keep-alive value with other IoT devices, and thus can minimize a network load which may be caused by a keep-alive value of an IoT communication device.

Abstract: The present disclosure provides an organic light emitting diode including a first electrode; a second electrode facing the first electrode; and an emitting material layer including a first compound and a second compound positioned between the first and second electrodes, wherein the first compound includes a hexagonal-ring moiety including one boron atom, one oxygen atom and four carbon atoms, and the second compound includes a hexagonal-ring moiety including one boron atom, one nitrogen atom and four carbon atoms, and an organic light emitting device including the organic light emitting diode.

Abstract: A flush glass apparatus includes a fixed glass having an opening, an operation glass configured to open and close the opening of the fixed glass, a lower rail configured to slidably support a lower portion of the operation glass, a sealing member provided below the lower rail to seal a gap between an inner surface of the fixed glass and a vehicle body, one or more upper drain holes provided on the lower rail to discharge rainwater on the lower rail to a buffer area between the lower rail and the sealing member, and a drain induction member interposed between the inner surface of the fixed glass and the sealing member and providing a lower drain hole to discharge rainwater in the buffer area to the outside.

Abstract: The present disclosure relates to a vehicle monitoring system. The vehicle monitoring system includes a touch key control system formed of a transparent display and a touch screen, and configured to selectively display a control key corresponding to a function in a touchable manner and provide corresponding function information when a driver touches the control key, and a touch screen main monitor formed of a touch screen, and configured to display function execution information according to the corresponding function information provided from the touch key control system.

Abstract: Provided are an IoT device and an IoT communication method. The IoT device may: be connected to a server via NAT; execute a first session for service connection; and execute a second session for calculating a particular keep-alive value corresponding to a period in which an IP address mapped by the NAT expires. The present invention can minimize transmission of a keep-alive value of an IoT device, enables an IoT device to share a particular keep-alive value with other IoT devices, and thus can minimize a network load which may be caused by a keep-alive value of an IoT communication device.

Abstract: Disclosed is an ultrafine fiber including lignin, a carrier polymer and a carbon material. The ultrafine fiber, which includes lignin, can exhibit the properties of lignin such as antibacterial property, biodegradability, etc. Accordingly, it can be used widely in medical materials such as nanofiber, nanofiber web, nanofiber sheet, etc. for wound healing of the skin's dermal layer. Also, the ultrafine fiber can be used in sheath of electric cables because it contains a carbon material and has superior conductivity. In addition, because the ultrafine fiber can hold a large quantity of water, it can be used in various fields including sanitary pads for women, diapers for babies and adults, etc.

Abstract: Disclosed is an ultrafine fiber including lignin, a carrier polymer and a carbon material. The ultrafine fiber, which includes lignin, can exhibit the properties of lignin such as antibacterial property, biodegradability, etc. Accordingly, it can be used widely in medical materials such as nanofiber, nanofiber web, nanofiber sheet, etc. for wound healing of the skin's dermal layer. Also, the ultrafine fiber can be used in sheath of electric cables because it contains a carbon material and has superior conductivity. In addition, because the ultrafine fiber can hold a large quantity of water, it can be used in various fields including sanitary pads for women, diapers for babies and adults, etc.

Abstract: Provided is an aerogel-containing heat insulation composite obtained by providing a volatile material to the pores of the aerogel, blending the aerogel with a polymer resin, particularly a flexible polymer resin, to form a composite, and removing the volatile material. Thus, it is possible to prevent a decline of the porosity of the aerogel caused by infiltration and impregnation of the pores of the aerogel with the resin. As a result, the aerogel-containing heat insulation composite, particularly containing a high content of aerogel, may retain the heat insulation property of the aerogel as well as the flexibility of the plastic material.

Abstract: Disclosed is a toothbrush and a toothbrush having interdental brush. There is provided the configuration of the toothbrush in which toothbrush bristles are aligned in two lines without the bristles in the middle of toothbrush head, and interdental brush bristles are also provided, so that toothbrush bristles can be deeply fit into and touched to every teeth and interdental portions without needs of applying excessive power or pressure during toothbrushing, thereby to prevent damages on teeth and gums, easily remove food particles and plagues remained on the toothbrush, and prevent the secondary bacteria diseases due to fast dry of the toothbrush.

Abstract: A flexible heat-dissipating sheet including a composite layer of filler and polymer resin is provided. The heat-dissipating sheet is obtained by dispersing a polymerization catalyst in a polymerizable thermoplastic resin and blending them with each other to form a thermoplastic resin composition, and mixing fillers with the thermoplastic resin composition, applying the resultant mixture onto a substrate film, followed by heating to carry out in-situ polymerization and to allow the composite layer of fillers and thermoplastic resin to be adhered to the substrate film. The heat-dissipating sheet has excellent heat-dissipating properties, i.e. heat conductivity, particularly in-plane heat conductivity, and shows improved physical properties, including mechanical properties and thermal properties, etc.

Abstract: Disclosed is a toothbrush and a toothbrush having interdental brush. There is provided the configuration of the toothbrush in which toothbrush bristles are aligned in two lines without the bristles in the middle of toothbrush head, and interdental brush bristles are also provided, so that toothbrush bristles can be deeply fit into and touched to every teeth and interdental portions without needs of applying excessive power or pressure during toothbrushing, thereby to prevent damages on teeth and gums, easily remove food particles and plagues remained on the toothbrush, and prevent the secondary bacteria diseases due to fast dry of the toothbrush.

Abstract: Disclosed is a composite of filler and polymer resin and a method for preparing the same, including preparing a thermoplastic resin composition by mixing a polymerization catalyst with a polymerizable thermoplastic resin, preparing a pre-pellet including a filler and a polymer resin by mixing a filler with the thermoplastic resin composition and heating to perform in-situ polymerization of the polymerizable thermoplastic resin to the polymer resin, and compounding the pre-pellet or the pre-pellet to which a polymer resin is further added to be pelletized.

Abstract: An electronic device includes a case that is capable of controlling colors. The electronic device includes a case containing thermochromic pigments. The case includes a plurality of thermoelectric elements disposed at an internal surface. The case is coupled to a power source unit that supplies power to the plurality of thermoelectric elements and a temperature sensor that measuring a temperature of the plurality of thermoelectric elements. The electronic device includes an input unit for setting a color of the case and a controller for controlling power supply of the power source unit such that a temperature of the plurality of thermoelectric elements measured by the temperature sensor is included in a temperature range corresponding to a color input from the input unit.

Abstract: An electronic device includes a case that is capable of controlling colors. The electronic device includes a case containing thermochromic pigments. The case includes a plurality of thermoelectric elements disposed at an internal surface. The case is coupled to a power source unit that supplies power to the plurality of thermoelectric elements and a temperature sensor that measuring a temperature of the plurality of thermoelectric elements. The electronic device includes an input unit for setting a color of the case and a controller for controlling power supply of the power source unit such that a temperature of the plurality of thermoelectric elements measured by the temperature sensor is included in a temperature range corresponding to a color input from the input unit.

Abstract: There is provided a built-in antenna device in a folder-type portable radio terminal having a body and a folder mounted to the main body to be rotatable at a predetermined angle with respect to the main body. A metal loop antenna is installed along the peripheral contour of the folder and an electrical connection means electrically connects the loop antenna to an RF (Radio Frequency) board of the main body. Therefore, the radiation performance of the antenna is maximized.

Abstract: There is provided a built-in antenna device in a folder-type portable radio terminal having a body and a folder mounted to the main body to be rotatable at a predetermined angle with respect to the main body. A metal loop antenna is installed along the peripheral contour of the folder and an electrical connection means electrically connects the loop antenna to an RF (Radio Frequency) board of the main body. Therefore, the radiation performance of the antenna is maximized.