Chang-Ku
Chang-Ku Chen, Hsinchu TW
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20080254579 | Semiconductor device and fabrication thereof - A method for forming a semiconductor device is disclosed. A substrate including a gate dielectric layer and a gate electrode layer sequentially formed thereon is provided. An offset spacer is formed on sidewalls of the gate dielectric layer and the gate electrode layer. A carbon spacer is formed on a sidewall of the offset spacer, and the carbon spacer is then removed. The substrate is implanted to form a lightly doped region using the gate electrode layer and the offset spacer as a mask. The method may also include providing a substrate having a gate dielectric layer and a gate electrode layer sequentially formed thereon. A liner layer is formed on sidewalls of the gate electrode layer and on the substrate. A carbon spacer is formed on a portion of the liner layer adjacent the sidewall of the gate electrode layer. A main spacer is formed on a sidewall of the carbon spacer. The carbon spacer is removed to form an opening between the liner layer and the main spacer. The opening is sealed by a sealing layer to form an air gap. | 10-16-2008 |
Chang-Ku Kang, Seoul KR
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20100154450 | Air Conditioning System Using Dehumidifying Cooling Device - An air conditioning system using for a dehumidifying cooling device has developed that comprising a heating source for producing hot water, a heat exchanger for transferring heat from the hot water to circulating water, a circulation pump for circulating the resulting hot water heated in the heat exchanger, a heating pipeline connected to the circulation pump for conveying the hot water to a heat supply target area, a user heat exchanger connected to the heating pipeline for conveying hot water to the heat supply target area, a dehumidifying cooling device connected to a hot water pipe of users heat exchanger and installed in each household within the heat supply target area, the dehumidifying cooling device removing moisture from the air by using hot water supplied from the hot water pipe to deal with latent heat load and to lower the temperature of the dehumidified air via evaporation of water contained in the air. | 06-24-2010 |
20100154455 | Dehumidifying Cooling Device for District Heating - Disclosed is a dehumidifying cooling device for district heating which comprises; a case having a first partition to divide the interior of the case into a wet channel and a dry channel and a second partition to divided the wet channel into a first wet channel and a second wet channel, a sensible heat exchanger to heat exchange the outside air in the first wet channel with the outside air in the second wet channel, a heating coil for raising the temperature of the outside air in the second wet channel, a rotatable de humidifying wheel for adsorbing and removing moisture contained in the circulated air within the dry channel, and a regenerative-evaporative cooler for cooling the circulated air in the dry channel. With this configuration, the device can carry out an air cooling operation by use of hot water supplied by district heating systems and gas or oil boilers installed in individual households, thereby achieving a reduced device size via the implementation of the cooling operation under the atmospheric pressure state and reducing manufacturing costs by virtue of a simplified system configuration. | 06-24-2010 |
20100212345 | Dehumidifying Cooling Device for District Heating - A dehumidifying cooling device for district heating is developed that comprising; a case with partitions divided into interior, which are a wet channel consisting of an outside air suction, exhaust and a dry channel for circulated air suction from conditioning area and air supply; a rotating sensible heat exchanger to heat exchange outside air of wet channel with the circulated air in the dry channel; a heating coil between the sensible heat exchanger and the exhaust for raising the temperature of outside air; a dehumidifying wheel for adsorbing and removing moisture contained in the circulated air; the dehumidifying wheel being regenerated by evaporating the adsorbed moisture thereby supplying the evaporated moisture into the high-temperature outside air in the wet channel, and a regenerative-evaporative cooler installed between the circulated air supply and the sensible heat exchanger for cooling the circulated air in the dry channel, the cooled circulated air delivered to the air supply. | 08-26-2010 |
Chang-Ku Lee, Hwasung KR
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20150232972 | NON-NORMALIZED STEEL COMPOSITION AND CONNECTING ROD USING THE SAME, AND METHOD OF MANUFACTURING THE CONNECTING ROD - Disclosed are a non-normalized steel composition which includes carbon (C), silicon (Si), manganese (Mn), sulfur (S), vanadium (V), titanium (Ti), nitrogen (N), and iron (Fe), and a method of manufacturing the connecting rod for improving yield strength, fatigue strength, and the like of the connecting rod. The non-normalized steel composition includes carbon (C) in an amount of about 0.30 to 0.55 weight %, silicon (Si) in an amount of about 0.80 to 1.20 weight %, manganese (Mn) in an amount of about 0.80 to 1.20 weight %, sulfur (S) in an amount of about 0.06 to 0.10 weight %, vanadium (V) in an amount of about 0.20 to 0.35 weight %, titanium (Ti) in an amount of about 0.01 to 0.20 weight %, nitrogen (N) in an amount of about 0.005 to 0.02 weight %, and the remainder of iron (Fe), and inevitable impurities, based on a total weight of the composition. | 08-20-2015 |