Eun-Chul
Eun-Chul Ahn, Seoul KR
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20150364387 | WAFER POLISHING METHOD - A wafer polishing method includes first polishing for polishing a wafer backside of a wafer, detecting if a defect exists on the wafer backside, determining whether a level of the detected defect is not within an allowable range, if a defect exists on the wafer backside, and second polishing for repolishing the wafer backside if the level of the defect is within an allowable range. Accordingly, a wafer may be reprocessed so that a level of defects, which may be caused by performing grinding and polishing on the wafer backside, is within an allowable range. Thus, the wafer backside may have uniform quality, and a failure rate of the wafer during a manufacturing processed may be efficiently decreased. | 12-17-2015 |
Eun-Chul Kang, Daejeon KR
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20130299126 | THERMAL ENERGY NETWORK SYSTEM - Provided is a thermal energy network system including: a first thermal station that stores first thermal energy using a first heat source and supplies the first thermal energy to a first demand source used for residence or commerce; and a second thermal station that stores second thermal energy using a second heat source and supplies the second thermal energy to a second demand source used for industry, wherein the first thermal station and the second thermal station manage a base load of a thermal energy network, and the first thermal energy and the second thermal energy are transferred between the first thermal station and the second thermal station as needed. | 11-14-2013 |
20140123644 | HEAT-ELECTRICITY COMBINED PRODUCTION SYSTEM THAT UTILIZES SOLAR ENERGY AND GEOTHERMAL HEAT - A heat-electricity combined production system includes: a solar cell module in which a flow path through which a heat source side heating medium heated by solar heat flows, is formed and which generates electricity by solar light; a geothermal heat exchanger that absorbs geothermal heat through the heat source side heating medium; a heat pump including a heat source side heat exchanger that performs heat-exchange between the heat source side heating medium and a refrigerant and a load side heat exchanger that performs heat-exchange between the refrigerant and a load side heating medium; a controller that control the heat source side heating medium to pass through both the solar cell module and the geothermal heat exchanger; and a plurality of pipes that connect the solar cell module, the geothermal heat exchanger and the heat pump. | 05-08-2014 |
Eun-Chul Kang, Seoul KR
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20090295358 | Driving Device - The present invention relates to a driving device. The driving device according to the present invention includes a main transistor that supplies a current to a load by using a power supply, an auxiliary transistor that drops a predetermined voltage of the voltage of the power supply and transmits the dropped voltage to the main transistor in a turn-on state, and a bypass switch that transmits the voltage of the power supply to the main transistor when the auxiliary transistor is turned off. | 12-03-2009 |
20110316585 | Interlock Circuit And Interlock System Including The Same - An interlock circuit includes an input delay unit and an output suppressing unit. The input delay unit delays a plurality of input signals, provides a plurality of delayed input signals, and provides a plurality of exclusive input signals by performing a logical operation on the plurality of delayed input signals. The output suppressing unit provides a plurality of output signals, which are not simultaneously enabled, based on the plurality of exclusive input signals and the plurality of input signals. | 12-29-2011 |
20130015881 | INTERLOCK CIRCUIT AND INTERLOCK SYSTEM INCLUDING THE SAME - An interlock circuit includes an input delay unit and an output suppressing unit. The input delay unit delays a plurality of input signals, provides a plurality of delayed input signals, and provides a plurality of exclusive input signals by performing a logical operation on the plurality of delayed input signals. The output suppressing unit provides a plurality of output signals, which are not simultaneously enabled, based on the plurality of exclusive input signals and the plurality of input signals. | 01-17-2013 |
Eun-Chul Kim, Suwon-Si KR
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20100120364 | APPARATUS AND METHOD FOR OBTAINING INFORMATION ON BLUETOOTH DEVICES IN A COMPUTING DEVICE USING BLUETOOTH - An apparatus and method for obtaining information on Bluetooth devices in a computing device using Bluetooth are provided. The method includes, if an Inquiry Response (IR) packet is received as a response to an inquiry packet, obtaining information on a first Bluetooth device transmitting the IR packet and determining whether a supplementary response indication field is enabled and, if the supplementary response indication field is enabled, receiving an Extended Inquiry Response (EIR) packet, and obtaining information on at least one Bluetooth device other than the first Bluetooth device through the EIR packet. | 05-13-2010 |
20100130131 | APPARATUS AND METHOD FOR CONNECTING WITH BLUETOOTH DEVICES IN A TERMINAL USING AUDIO CHANNEL - An apparatus and method for connecting with Bluetooth devices in a terminal using an audio channel are provided. The method includes distinguishing an audio Bluetooth hands-free device and a non-audio Bluetooth hands-free device, performing a connection with two Bluetooth hands-free devices by connecting with the non-audio Bluetooth hands-free device and the audio Bluetooth hands-free device in a regular sequence, upon a change of a control state of the terminal, transmitting state information to the two Bluetooth hands-free devices, and, upon call connection, sending a request for a connection of an audio channel to the audio Bluetooth hands-free device. | 05-27-2010 |
Eun-Chul Lee, Yongin-Si KR
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20130032827 | DISPLAY SUBSTRATE, METHOD OF MANUFACTURING A DISPLAY SUBSTRATE AND LIQUID CRYSTAL DISPLAY DEVICE HAVING A DISPLAY SUBSTRATE - A display substrate for a display device includes a substrate, a switching device, a gate line, a data line, a pixel electrode, a plurality of common electrodes. The switching device includes an active pattern, a gate insulation layer, a gate electrode, a source electrode and a drain electrode. The gate line is electrically connected to the source electrode, and the data line is electrically coupled to the gate electrode. The pixel electrode is electrically connected to the drain electrode, and the common electrodes are disposed on the pixel electrode. A coupling capacitance among the common electrodes and the data line can be prevented and/or reduced to prevent a signal delay of the data line. Further, an aperture ratio of the display substrate can be improved by changing a layout of the data line and the gate line. | 02-07-2013 |
Eun-Chul Park, Gyeonggi-Do KR
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20080315950 | Integrated Circuit Amplifiers Having Switch Circuits Therein that Provide Reduced 1/f Noise - Integrated circuit devices include a pair of field effect transistors having shared source terminals, shared drain terminals and shared gate terminals, which may be treated herein as being electrically coupled in parallel. A switch circuit is also provided, which is configured to drive a body terminal of a first one of the pair of field effect transistors with an alternating sequence of first and second unequal body voltages. This alternating sequence is synchronized with a first clock signal. The switch circuit is also configured to drive a body terminal of a second one of the pair of field effect transistors with an alternating sequence of third and fourth unequal body voltages, which is synchronized with a second clock signal. The first and third body voltages may have equivalent magnitudes and the second and fourth body voltages may have equivalent magnitudes. The first and second clock signals may have 50% duty cycles and may be 180 degrees out-of-phase relative to each other. | 12-25-2008 |
Eun-Chul Shin, Yangsan KR
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20130263383 | VEHICLE SEAT COVER LEATHER HAVING EXCELLENT DURABILITY AND METHOD OF FABRICATING THE SAME - Disclosed is a method of fabricating an automotive seat cover leather. The method includes a preparing process, a tanning process, a neutralizing process, a retanning process, an elastic material adding process, a dyeing/fatliquoring process, and a surface fixing process. After the leather has gone through the tanning process and neutralizing process, the retanning process adds a tanning agent to the leather. The elastic material adding process adds a silicon-based elastic material to induce elasticity in the retanned leather. The dyeing/fatliquoring process adds a dye to the leather in which the elastic material has been added and adds an anion fatliquoring agent to the leather to provide flexibility. The surface fixing process fixes the elastic material, dye, and fatliquoring agent on and in the leather. | 10-10-2013 |
Eun-Chul Shin, Seoul KR
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20100289016 | ORGANIC LIGHT EMITTING DIODE AND MANUFACTURING METHOD THEREOF - Disclosed is an organic light emitting diode, in which the light transmittance of a transparent cathode is improved, and which includes a substrate, a first electrode formed on the substrate, an organic layer formed on the first electrode, a second electrode formed on the organic layer, and a transparent layer formed at either one or both of a position between the organic layer and the second electrode and a position on the upper surface of the second electrode and including any one selected from among an oxide, a nitride, a salt and mixtures thereof, so that the formation of the transparent layer on the cathode results in increased light transmittance and decreased resistance, thereby improving electrical performance of products. A method of manufacturing the organic light emitting diode is also provided. | 11-18-2010 |
20100289017 | ORGANIC LIGHT EMITTING DIODE AND MANUFACTURING METHOD THEREOF - Disclosed is an organic light emitting diode, which has improved light transmittance and which includes a first substrate and a second substrate, a first electrode formed on the first substrate, an organic layer formed on the first electrode, a second electrode formed between the organic layer and the second substrate, and an antireflective layer formed on at least one surface of at least one of the first substrate and the second substrate and having a predetermined refractive index, so that the formation of the antireflective layer on any outer surface of at least one of the first substrate and the second substrate results in increased transmittance, thus improving reliability of products. A method of manufacturing the organic light emitting diode is also provided. | 11-18-2010 |