Abstract: Disclosed are a lead-free photodetector and a method for manufacturing the same. The lead-free photodetector includes a light-side electrode, a light-side conductive layer formed on the light-side electrode, a perovskite layer formed on the light-side conductive layer, a rear-side conductive layer formed on the perovskite layer, and a rear-side electrode formed on the rear-side conductive layer.

Abstract: A method for refining waste plastic pyrolysis oil is provided, including: applying a voltage to a first mixed solution obtained by mixing waste plastic pyrolysis oil, washing water, and a demulsifier to dehydrate the first mixed solution to form a dehydrated first mixed solution; and hydrotreating a second mixed solution obtained by mixing the dehydrated first mixed solution dehydrated and a sulfur source to produce refined oil from which impurities have been removed, and a device related thereto. The method and device may prevent or minimize formation of an ammonium salt (NH4Cl) and/or prevent adhesion of impurity particles in a refining process of waste plastic pyrolysis oil containing impurities such as chlorine and nitrogen, and provides waste plastic pyrolysis oil having low content of impurities and olefins and excellent quality, and thus, may be used as a feedstock for blending with existing petroleum products or oil refining and petrochemical processes.

Abstract: A fluid level measurement system using a buoyant body includes a guide part installed in a direction perpendicular to the bottom surface of a fluid storage tank, and provided with a space in which a fluid can move therein; a buoyant body inserted into the guide part, and configured to float along the surface of the fluid inside the guide part; and a measurement part coupled to the top end of the guide part, and configured to measure the level of the surface of the fluid inside the fluid storage tank by transmitting a signal toward the buoyant body in the inner space of the guide part and then receiving a signal reflected from the buoyant body.

Abstract: A fluid level measurement system using a buoyant body includes a guide part installed in a direction perpendicular to the bottom surface of a fluid storage tank, and provided with a space in which a fluid can move therein; a buoyant body inserted into the guide part, and configured to float along the surface of the fluid inside the guide part; and a measurement part coupled to the top end of the guide part, and configured to measure the level of the surface of the fluid inside the fluid storage tank by transmitting a signal toward the buoyant body in the inner space of the guide part and then receiving a signal reflected from the buoyant body.

Abstract: The present invention relates to a refrigerator and, more specifically, to a refrigerator comprising: a main body having a refrigerator compartment and a freezer compartment formed therein; an ice making compartment delimited as a separate thermal insulation space inside the refrigerator compartment, the ice making compartment having an ice maker and an ice storage bucket; and a door for opening/closing at least a part of the refrigerator compartment, the door having a dispenser installed thereon such that same communicates with the ice making compartment. The ice making compartment has an ice discharge port formed therein. The dispenser comprises: an ice transfer duct configured to communicate with the ice discharge port when the door is closed; and a gasket positioned on the periphery of the entrance of the ice transfer duct such that, when the door is closed, the upper end thereof contacts the periphery of the ice discharge port.

Abstract: A method of fabricating a photomask comprising providing a photomask blank including a phase shifting layer, a first light blocking layer, a first resist layer, a second light blocking layer and a second resist layer stacked sequentially in this order on a substrate, forming second resist patterns, forming second light blocking patterns, forming first resist patterns, forming first light blocking patterns and phase shifting patterns, removing the first resist patterns, and selectively removing at least one of the first light blocking patterns, wherein the second resist layer has a thickness such that all of the second resist layer is removed while the first resist layer is patterned for exposing the second light blocking layer.

Abstract: A method of fabricating a photomask comprising providing a photomask blank including a phase shifting layer, a first light blocking layer, a first resist layer, a second light blocking layer and a second resist layer stacked sequentially in this order on a substrate, forming second resist patterns, forming second light blocking patterns, forming first resist patterns, forming first light blocking patterns and phase shifting patterns, removing the first resist patterns, and selectively removing at least one of the first light blocking patterns, wherein the second resist layer has a thickness such that all of the second resist layer is removed while the first resist layer is patterned for exposing the second light blocking layer.

Abstract: A photomask blank includes a substrate, a phase shifting layer disposed on the substrate, a first light blocking layer disposed on the phase shifting layer, a first resist layer disposed on the first light blocking layer, a second light blocking layer disposed on the first resist layer, and a second resist layer disposed on the second light blocking layer.

Abstract: A photomask blank includes a substrate, a phase shifting layer disposed on the substrate, a first light blocking layer disposed on the phase shifting layer, a first resist layer disposed on the first light blocking layer, a second light blocking layer disposed on the first resist layer, and a second resist layer disposed on the second light blocking layer.

Abstract: Disclosed is a transfer film which is transferred to an injection molding product. The transfer film includes a protective layer a printing layer which is stacked on the protective layer; a metal deposition layer which is deposited on the printing layer so as to have an island structure and thus to provide non-conductive property; and adhesive layer which is deposited on the metal deposition layer, thereby providing metal color and non-conductive property.

Abstract: The present disclosure relates to a sealing structure for a central wall for a refrigerator, and a refrigerator including the same. The sealing structure includes a refrigerating chamber inner case having a bent, angled or curved portion and a protrusion at one end; a freezer inner case having a bent, angled or curved portion and a protrusion at one end; a central wall which partitions the refrigerating chamber and freezer inner cases; a partition plate having bent, angled or curved portions at sides and/or a front surface thereof, seating grooves configured to receive the protrusions, and flanges at ends and/or a rear surface thereof, at or on a front surface of the central wall; a heat radiating pipe between the refrigerating chamber inner case and the freezer inner case; and a first supporting member on or in the bent, angled or curved portion of the refrigerating chamber inner case.

Abstract: The present invention relates to a method and apparatus for manufacturing a solar cell module using a laser. In the present invention, a tabbing process for bonding a solar cell and metal electrodes is performed by a local irradiation with a laser, so that the heating area can be localized only to a required zone (bonding area) for the tabbing process, thereby minimizing a direct heating zone which occurs in the process. Therefore, it is possible to reduce the damage such as cracks and breakage due to thermal expansion/contraction of a solar cell which is conventionally configured to have a multi-layered structure made of different materials, to improve the bonding strength and the bonding uniformity, and to reduce the processing time, thereby improving the production efficiency.

Abstract: Disclosed is a transfer film which is transferred to an injection molding product. The transfer film includes a protective layer a printing layer which is stacked on the protective layer; a metal deposition layer which is deposited on the printing layer so as to have an island structure and thus to provide non-conductive property; and adhesive layer which is deposited on the metal deposition layer, thereby providing metal color and non-conductive property.

Abstract: A structure of a dry heating system, and a method for constructing the same are disclosed. An upper board stacked on a heat radiator has a double-layer structure comprising first upper board elements and second upper board elements in order to prevent steps from being formed at seaming portions formed on the upper portion of the dry heating system, thereby maintaining flatness of the upper board, and reducing any bending of the upper board, in which the first upper board elements constitute a lower portion of the double-layer structure, and serve to protect the heat radiator while supporting a weight load, and the second upper board elements constitute an upper portion of the double-layer structure, and serve to maintain the flatness of the upper board by removing the steps, thereby ensuring excellent quality in construction of the dry heating system.

Abstract: Disclosed is a solar cell module which incorporates layers of design is adapted for integration into construction as exterior walls incorporated into the steel frame of buildings, and comprises a double glass module having an external panel and an internal panel of tempered glass, with solar cells and layers of design between the external tempered glass panel and internal tempered glass panel.

Abstract: The present invention relates to a method and apparatus for manufacturing a solar cell module using a laser. In the present invention, a tabbing process for bonding a solar cell and metal electrodes is performed by a local irradiation with a laser, so that the heating area can be localized only to a required zone (bonding area) for the tabbing process, thereby minimizing a direct heating zone which occurs in the process. Therefore, it is possible to reduce the damage such as cracks and breakage due to thermal expansion/contraction of a solar cell which is conventionally configured to have a multi-layered structure made of different materials, to improve the bonding strength and the bonding uniformity, and to reduce the processing time, thereby improving the production efficiency.

Abstract: Disclosed herein is a floor system for efficiently absorbing an impact applied to a floor. The floor system includes a first impact-absorbing material, and a second impact-absorbing material installed at an upper side of the first impact-absorbing material and having a higher density than that of the first impact-absorbing material.

Abstract: Disclosed herein is a floor sound-insulating type heating system in which a floor sound-insulating structure for reducing the transmission of an impact sound from upstairs to downstairs in an apartment complex and a dry floor heating structure are integrally formed with each other. The floor sound-insulating type heating system can achieve improvements in construction efficiency as well as sound insulation and heat insulation effects.

Abstract: An e-beam exposure apparatus includes an electron gun provide an e-beam for exposure to a resist layer formed on a substrate; an e-beam column part inducing the path of the e-beam generated from the electron gun; and an electron collecting part disposed at the periphery of the path of the e-beam projected from the e-beam column part on the resist layer to absorb scattered electrons resulting from emission of the incident e-beam from the resist layer.

Abstract: A refrigerator shelf includes a glass sheet and upper and lower frames disposed at the edge of the glass sheet. The upper frame has latch parts formed at the lower surface thereof and the lower frame has flanges formed at the upper surface thereof so that the flanges are fitted to the latch parts at both sides of the upper and lower frames. The upper frame is further provided with holes and protrusions formed at the front and rear ends thereof, respectively, and the lower frame is further provided with protrusions and holes formed at the front and rear ends of the lower frame, respectively, so that the holes and protrusions of the upper frame are correspondingly engaged with the protrusions and holes of the lower frame at the front and rear ends of the upper and lower frames.