Cheolmin
Cheolmin Baek, Gyeonggi-Do KR
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20150329702 | WARM MIX RECYCLED ASPHALT ADDITIVE CONTAINING OIL DREGS, AND WARM MIX RECYCLED ASPHALT MIXTURE CONTAINING SAME - A warm mix recycled asphalt additive according to one embodiment includes dregs of oil and fat which are the by-products remaining after fatty acids are extracted from oils. In addition, the warm mix asphalt mixture according to another embodiment includes 2-15 wt % of the warm mix recycled asphalt additive, having dregs of oil and fat which are the by-products remaining after fatty acids are extracted from oils, on the basis of the total amount of waste asphalt in waste asphalt concrete. It is possible to overcome the problem of brittleness or the deterioration of lower temperature properties even if mixing and using waste asphalt concrete and new asphalt concrete when making asphalt concrete, to minimize the generation of toxic gas by exhibiting a technique for paving a warm mix mixture, and to reduce the environmental burden by efficiently regenerating waste asphalt concrete and recycling organic dregs. | 11-19-2015 |
Cheolmin Kim, Seoul KR
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20130091882 | AIR CONDITIONER - There is disclosed an air conditioner including a compressor to compress refrigerant, an indoor heat exchanger to cool or heat a room, using the refrigerant, an outdoor heat exchanger to heat-exchange the refrigerant with outdoor air, the outdoor heat exchanger comprising a front heat exchange member and a rear heat exchange member, and a defrosting module to adjust an opening degree of a passage of the refrigerant drawn into the front heat exchange member and the rear heat exchange member, wherein the defrosting module includes a first expansion valve to adjust an opening of a passage of the refrigerant introduced into the front heat exchange member and a defrosting unit to adjust an opening degree of a passage of the refrigerant between the front heat exchange member and the rear heat exchange member. | 04-18-2013 |
Cheolmin Kim, Yongin-City KR
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20160133191 | DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes pixels connected to scan lines, data lines, and emission control lines. Each include includes an organic light-emitting diode (OLED), a first transistor to transfer driving current to the OLED based on a data signal, a second transistor to transfer the data signal to the first transistor based on a first scan signal having a gate-on voltage level during a data writing period, a first capacitor connected between a gate electrode of the first transistor and a first power source, and a second capacitor connected between a drain electrode of the first transistor and the first power source. | 05-12-2016 |
Cheolmin Kim, Yongin-Si KR
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20160133192 | GAMMA VOLTAGE GENERATOR, METHOD OF GENERATING GAMMA VOLTAGE, AND ORGANIC LIGHT-EMITTING DIODE DISPLAY INCLUDING THE GENERATOR - A gamma voltage generator, method of generating gamma voltage, and an OLED display including the generator are disclosed. In one aspect, the generator includes a gamma reference voltage selector configured to receive a gamma reference voltage from a voltage generator and output selected first to third gamma voltages having values substantially equal to or less than the gamma reference voltage. The generator also includes a medium gamma voltage selector configured to receive the first to third gamma voltages from the gamma reference voltage selector and select and output a plurality of medium gamma voltages based at least in part on the first to third gamma voltages. The generator further includes a medium gamma voltage calculator configured to output a selection signal corresponding to the calculated low gamma voltage to the medium gamma voltage selector. | 05-12-2016 |
Cheolmin Yun, Daejeon KR
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20140316074 | POLYAMIC ACID POLYMER COMPOSITE AND PREPARATION METHOD THEREOF - The present invention relates to a polyamic acid polymer composite and a method for producing the same, and more specifically, a polyamic acid polymer composite, which can be applied to display substrate production due to its high transparency and low thermal expansion of glass-level, and a method for producing same. The polyamic acid polymer composite comprises 50 to 99 wt % of a polyamic acid polymer having a repeating unit of Chemical Formula 1; and 1 to 50 wt % of a silica-based particle: | 10-23-2014 |