Patent application number | Description | Published |
20140084693 | GATE DRIVING CIRCUIT AND INVERTER HAVING THE SAME - An inverter includes an inverter unit including at least one inverter arm having at least one high side switch and at least one low side switch connected to each other in series between a ground and an input power terminal providing input power having a preset voltage level, and switching the input power to output AC power; and a high voltage gate driving circuit unit including at least one high voltage gate driving unit having a plurality of high voltage gate drivers connected in series between an input terminal of an instruction signal requesting a switching control of the inverter unit and an output terminal of a control signal controlling switching of the inverter unit, such that switching of the high side switch is controlled, and voltage generated at the time of switching the high side switch is divided and applied to the plurality of high voltage gate drivers. | 03-27-2014 |
20140119070 | POWER FACTOR CORRECTION CIRCUIT AND METHOD FOR CONTROLLING POWER FACTOR CORRECTION - Disclosed herein is a power factor correction circuit, including: a boost converter circuit in which a plurality of boost circuits including a boost inductor, a rectifying diode, and a boost switch are connected with each other; and a snubber circuit including a snubber inductor and a snubber switch so as to snubber the boost converter circuit. The snubber inductor is controlled so as to be turned on before the boost inductor is turned on to apply zero voltage to the boost inductor. It is possible to reduce switching loss occurring when the boost switch is turned on and increase efficiency of an AC-DC power supply apparatus. | 05-01-2014 |
20140119079 | POWER FACTOR CORRECTION CIRCUIT AND POWER SUPPLY DEVICE INCLUDING THE SAME - There are provided an interleaved power factor correction circuit and a power supply device including the same, the power factor correction circuit including: a main switching unit including a first main switch and a second main switch; an auxiliary switching unit including a first auxiliary switch and a second auxiliary switch; an inductor unit positioned between an input power terminal to which the input power is applied and the main switching unit and storing or discharging power according to the switching operations of the main switching unit; and an auxiliary inductor adjusting an amount of current flowing in the auxiliary switching unit when the auxiliary switching unit performs switching operations. | 05-01-2014 |
20140152271 | POWER FACTOR CORRECTION APPARATUS AND METHOD FOR CORRECTING POWER FACTOR USING THE SAME - There are provided a power factor correction device and a method for controlling power factor correction using the same. The power factor correction device includes a power factor correction circuit and a control circuit. The power factor correction circuit includes first and second inductors connected to an input power source stage and first and second main switches performing a switching operation on the first and second inductors, respectively. The control circuit may provide control signals to the first and second main switches, respectively, and when phase currents flowing in the respective first and second inductors are unbalanced, the control circuit may change a phase of at least one of the first and second main switches to correct an imbalance of the phases. | 06-05-2014 |
20140153299 | POWER FACTOR CORRECTION DEVICE - There is provided a power factor correction device including: a main switching unit including a first main switch and a second main switch performing a switching operation with predetermined phase differences; an auxiliary switching unit including a first auxiliary switch and a second auxiliary switch forming a transmission path for surplus power existing before the first main switch and the second main switch are turned on, respectively; an inductor unit positioned between a power input unit to which AC power is applied and the main switching unit and accumulating or discharging energy according to a switching operation of the main switching unit; and an auxiliary inductor unit regulating an amount of current flowing in the auxiliary switching unit in the event of a switching operation of the auxiliary switching unit. | 06-05-2014 |
20140153307 | DRIVER DEVICE FOR POWER FACTOR CORRECTION CIRCUIT - There is provided a driver device for a power factor correction circuit including first and second main switches that are switched on and off with a phase difference therebetween, and first and second auxiliary switches that provide conduction paths of surplus voltage in the first and second main switches before the first and second main switches are switched on, the driver device including: an input unit receiving a plurality of input signals; and an output unit outputting a first control signal for the first main switch, a second control signal for the second main switch, a third control signal for the first auxiliary switch, and a fourth control signal for the second auxiliary switch based on a plurality of input signals. | 06-05-2014 |
20140160815 | POWER FACTOR CORRECTION CIRCUIT - There is provided a power factor correction circuit including: a main switching unit including a first main switch and a second main switch performing a switching operation to regulate a phase difference between a current and a voltage of input power, respectively; a main inductor unit including a first main inductor and a second main inductor accumulating or discharging energy according to a switching operation of each of the first main switch and the second main switch; a snubber switching unit including a first snubber switch and a second snubber switch providing zero-voltage turn-on conditions to the first main switch and the second main switch, respectively; and a controller controlling a switching operation of the main switching unit and the snubber switching unit. | 06-12-2014 |
20140160816 | POWER FACTOR CORRECTION CIRCUIT AND POWER SUPPLY INCLUDING THE SAME - There are provided a power factor correction circuit and a power supply including the same, the power factor correction circuit including a main switch adjusting a phase difference between a current and a voltage of input power, a main inductor storing or discharging the power according to switching of the main switch, a snubber circuit unit including a snubber switch forming a transfer path for surplus power present before the main switch is turned on and a snubber inductor adjusting an amount of a current applied to the snubber switch, and a reduction circuit unit reducing excessive power imposed on the snubber switch by varying inductance of the snubber inductor. | 06-12-2014 |
20140167123 | POWER SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME - There is provided a power semiconductor device including: a body region having a first conductivity; a well formed in an upper portion of the body region and having a second conductivity; and a conductive via formed in the body region while traversing the well. | 06-19-2014 |
20140177288 | FLYBACK CONVERTER - There is provided a flyback converter, including: a power supply unit supplying input power; a transformer unit including first and second transformers converting first and second primary current from the power supply unit into first and second secondary current, respectively; a main switch unit including first and second main switches respectively intermitting the first and second primary current flowing in respective primary windings of the first and second transformers; an auxiliary switch unit including first and second auxiliary switches forming respective transfer paths for dump power present before the first and second main switches are switched on; and an auxiliary inductor unit including first and second auxiliary inductors respectively adjusting the amount of current flowing in the first and second auxiliary switches during the switching operation thereof, wherein the first and second main switches perform a switching operation while having a predetermined phase difference therebetween. | 06-26-2014 |
20140184175 | DRIVING APPARATUS FOR DRIVING POWER FACTOR CORRECTION CIRCUIT - There is provided a driving apparatus for driving an interleaved power factor correction circuit including a first main switch and a second main switch performing a switching operation with a predetermined phase difference and a first auxiliary switch and a second auxiliary switch forming a transformation path for surplus power existing before an ON operation of the first main switch and a second main switch, respectively, including: an input unit obtaining an input signal; a current sensing unit obtaining information regarding a current of the interleaved power factor correction circuit; and an output unit outputting a first control signal with respect to the first main switch, a third control signal with respect to the second main switch, a second control signal with respect to the first auxiliary switch, and a fourth control signal with respect to the second auxiliary switch, based on the input signal and the current information. | 07-03-2014 |
20140185242 | POWER SEMICONDUCTOR MODULE - There is provided a power semiconductor module in which power semiconductor elements, integration of which may be difficult due to heating, are modularized. The power semiconductor module includes: a heat dissipation substrate electrically connected to a common connection terminal; and a plurality of electronic elements disposed on the heat dissipation substrate, wherein the electronic elements have varying spaces therebetween. | 07-03-2014 |
20140266033 | POWER CHARGING APPARATUS AND BATTERY APPARATUS - A power charging apparatus and a battery apparatus quickly charge a battery with power by separately charging each battery cell with power. The power charging apparatus includes: a power supplier supplying power; and a charging part having at least two chargers corresponding one-to-one to at least two battery cells connected to each other in parallel, each of the at least two chargers charging the corresponding battery cell with power transmitted from the power supplying unit. The battery apparatus includes: a battery having at least two battery cells connected to each other in parallel; and a charging part having at least two chargers corresponding one-to-one to the at least two battery cells and charging the at least two chargers with power received. | 09-18-2014 |
20150287903 | PIEZOELECTRIC TRANSFORMER - The piezoelectric transformer according to an exemplary embodiment includes: at least one input unit; and a plurality of output units connected to the input unit, wherein the plurality of output units output different levels of voltage. | 10-08-2015 |
Patent application number | Description | Published |
20110141655 | MULTILAYER CERAMIC CAPACITOR - Disclosed is multilayer ceramic capacitor. The multilayer ceramic capacitor includes a capacitive part including dielectric layers and first and second internal electrodes alternately laminated therein, wherein the dielectric layers include first ceramic particles having an average particle size of 0.1 μm to 0.3 μm, and one set of ends of the first internal electrodes and one set of ends of the second internal electrodes are exposed in a lamination direction of the dielectric layers, a protective layer formed on at least one of top and bottom surfaces of the capacitive part, including second ceramic particles and having a porosity of 2% to 4%, wherein an average particle size ratio of the second ceramic particles to the first ceramic particles ranges from 1.1 to 1.3; and first and second external electrodes electrically connected to the first and second internal electrodes exposed in the lamination direction of the dielectric layers. | 06-16-2011 |
20110141659 | MULTILAYER CERAMIC CAPACITOR - There is provided a multilayer ceramic capacitor. The multilayer ceramic capacitor includes an effective layer including inner electrodes and dielectric layers that are alternately stacked, and a protection layer formed on each of top and bottom surfaces of the effective layer, the protection layer being formed by stacking dielectric layers. The effective layer has an outside part, an inside part and an outside part in that order along a stack direction, the inner electrodes of the outside parts have a smaller thickness than that of the inner electrodes of the inside part, and the outside parts have a thickness 0.1 to 0.5 times that of the protection layer. | 06-16-2011 |
20110141660 | MULTILAYER CERAMIC CAPACITOR - Disclosed is a multilayer ceramic capacitor. The multilayer ceramic capacitor includes a capacitive part including a plurality of dielectric layers and first and second internal electrodes that are laminated in an alternating manner, wherein one set of ends of the first internal electrodes and the other set of ends of the second internal electrodes are exposed in a lamination direction in which the dielectric layers are laminated, a protective layer formed on at least one of top and bottom surfaces of the capacitive part, including a plurality of pores having an average pore size of 0.5 μm to 3 μm, and having a porosity of 2% to 10%, and first and second external electrodes electrically connected to the first and second internal electrodes exposed in the lamination direction of the dielectric layers. | 06-16-2011 |
20110149469 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF FABRICATING THE SAME - There is provided a multilayer ceramic capacitor including: a capacitor main body formed by stacking a dielectric layer having a thickness of td and alternately stacking more than one opposing pair of a first internal electrode having a thickness of to and a second internal electrode having the same thickness as the first internal electrode, and having the dielectric layer therebetween; and a protective layer formed by stacking a second dielectric layer on at least one of an upper surface and a lower surface of the capacitor main body so that a dielectric material layer has a thickness of tc, wherein when a thickness from an end of a region where the first internal electrode and the second internal electrode oppose each other to side and end surfaces of the capacitor main body is a, it satisfies the following Equation 1 and a method of fabricating a multilayer ceramic capacitor are provided. | 06-23-2011 |
20110157765 | MULTILAYER CERAMIC CAPACITOR AND FABRICATING METHOD THEREOF - A multilayer ceramic capacitor includes a capacitor body in which inner electrodes and dielectric layers are alternately laminated, and a length difference rate (D) of the inner electrodes is 7% or less. The length difference rate (D) is defined by D={L−1}/L×100, where L is a maximum length of the inner electrode, and l is a minimum length of the inner electrode. | 06-30-2011 |
20120099241 | MULTILAYER CERAMIC ELECTRONIC COMPONENTS AND METHOD OF MANUFACTURING THE SAME - Disclosed are a multilayer ceramic electronic component and a method of manufacturing the same. There is provided a multilayer ceramic electronic component, including: a ceramic main body in which a plurality of dielectric layers having an average thickness of 1 μm or less are stacked; and inner electrode layers formed on the dielectric layers and having connectivity of 90% or more expressed by the following Equation, wherein the ratio of the thickness of the inner electrode layer to the thickness of the dielectric layer is between 0.8:1 and 1.3:1. The Equation is as follows. | 04-26-2012 |
20120106025 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic capacitor and a method of manufacturing the same. There is provided a multilayer ceramic capacitor, including: a ceramic body having a plurality of dielectric layers stacked therein and including a first side and a second side opposite to each other and a third side and a fourth side connected to the first side and the second side; and inner electrode layers formed on the dielectric layers, including electrode drawing parts exposed to the first side or the second side and an electrode main part, and having a length between the electrode main part and the third side of 100 μm or less and a ratio of a length between the electrode drawing part and the third side to the length between the electrode main part and the third side of between 1.2:1 and 1.7:1. The multilayer ceramic capacitor may have improved reliability by suppressing cracks occurring in the ceramic laminate due to thermal impact during a sintering or mounting process. | 05-03-2012 |
20120127626 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - Disclosed are a multilayer ceramic capacitor and a method of manufacturing the same. The multilayer ceramic capacitor includes a ceramic body having a plurality of dielectric layers stacked on top of each other, at least one internal electrode formed on a corresponding one of the plurality of dielectric layers and having uneven portions formed at an edge thereof, the internal electrode having a connectivity of between 0.7 and 0.9, which is defined by an equation below, and an external electrode formed on an outer surface of the ceramic body and connected with the internal electrode, | 05-24-2012 |
Patent application number | Description | Published |
20120094564 | STAINPROOFING METHOD OF FABRIC - A method for anti-stain treatment of fabric is disclosed. The method for anti-stain treatment of fabric includes: immersing fabric in an aqueous solution containing a telomerized perfluoroalkyl acrylate copolymer, and a crosslinking agent, such as an isocyanate crosslinking agent; dehydrating the immersed fabric; drying the dehydrated fabric; heat treating the dried fabric; and coating the heat-treated fabric with a flame retardant, such as an acrylic flame retardant, to provide flame retardancy. The method provides a car seat fabric having superior stain resistance, water repellency and oil repellency without degradation of other properties required for the car seat fabric, such as flame retardancy, lightfastness, frictional coloration, or the like. The method is widely applicable to commercially applicable car seat fabrics, including flat woven, flat tricot, double raschel, or the like. | 04-19-2012 |
20120308726 | METHOD FOR PRODUCING SYNTHETIC LEATHER HAVING AIR PERMEABILITY - Disclosed is a synthetic leather produced by directly coating a water-soluble synthetic resin solution on the surface of a fabric to form a film thereon such that fine gaps formed on the fabric are partially left open to have a certain degree of air permeability. In particular, a brushing process is used for brushing the surface of a fabric using a brushing machine to raise a nap. Next, a hydrolysis-resistant and flame-retardant resin solution is coated on the back of the fabric, which is opposite to the surface on which the nap is raised, to reinforce the back of the fabric. A film forming process then applies a water-soluble polyurethane resin solution to the nap raised on the surface of the fabric to form a film on the surface of the fabric thereby producing a synthetic leather product that has air permeability properties that are superior to genuine leather. | 12-06-2012 |
20130059146 | LAMINATED SHEET FOR INTERIOR MATERIAL OF VEHICLE - The present invention provides a laminated sheet for interior materials of vehicles. The laminated sheet includes a surface layer and an inside layer combined with the surface layer and receiving an injection resin. In particular, the inside layer includes two or more types and foaming ratios of thermoplastic elastomer in a multi-layer. | 03-07-2013 |
20130323456 | ECO-FRIENDLY TUFTED CARPET FOR VEHICLE HAVING IMPROVED ABRASION RESISTANCE - Disclosed is a tufted carpet for a vehicle. The tufted carpet for the vehicle is manufactured by implanting a spun yarn into a base fabric, wherein the spun yarn is formed from a material mixture of about 85 wt % to about 95 wt % polyethylene terephthalate (PET) and about 5 to about 15 wt % polytrimethylene terephthalate (PTT). | 12-05-2013 |
Patent application number | Description | Published |
20080303622 | SPIRAL INDUCTOR - There is provided a spiral inductor including an insulation board formed into a flat-plate shape; a conductive pattern having a spiral shape and formed at least one surface of the insulation board, wherein the conductive pattern varies in line width according to a distance from one end of the conductive pattern forming a spiral. | 12-11-2008 |
20090039977 | BALUN TRANSFORMER - A balun transformer includes a first conductive pattern having one end provided as an input/output port of an unbalanced signal, a second conductive pattern electromagnetically coupled to the first conductive pattern and having both ends provided as input/output ports of a balanced signal, and a first variable capacitor connected between a ground part and a middle part of an electrical length of the second conductive pattern. | 02-12-2009 |
20090085670 | MULTIBAND OUTPUT IMPEDANCE MATCHING CIRCUIT HAVING PASSIVE DEVICES, AMPLIFIER INCLUDING MULTIBAND INPUT IMPEDANCE MATCHING CIRCUIT HAVING PASSIVE DEVICES, AND AMPLIFIER INCLUDING MULTIBAND INPUT/OUTPUT IMPEDANCE MATCHING CIRCUIT HAVING PASSIVE DEVICES - Disclosed are a multiband output impedance matching circuit having passive devices, an amplifier including a multiband input impedance matching circuit having passive devices, and an amplifier including a multiband input/output impedance matching circuit having passive devices, which can be miniaturized without a separate output terminal buffer and reduce current consumption by using the passive devices. | 04-02-2009 |
20090213768 | WIRELESS COMMUNICATION SYSTEM FOR TIME DIVISION DUPLEX - Disclosed is a wireless communication system applicable to a time-division duplex transceiver system. The time-division duplex mobile communication system can achieve miniaturization, low power consumption and low costs by using a frequency conversion circuit including a mixer and an intermediate frequency (IF) circuit for both transmitter and receiver, and also can cope with multi-band, multi-application systems by using a broadband amplifier, a variable IF filter and a variable gain amplifier. | 08-27-2009 |
20100308920 | WIDE-BAND AMPLIFIER CIRCUIT WITH IMPROVED GAIN FLATNESS - There is provided a wide-band amplifier circuit with improved gain flatness. The wide-band amplifier circuit includes a first resonant load unit connected to an operating power terminal, providing a preset first load, and forming a preset first resonant point, a second resonant load unit connected to the operating power terminal, providing a preset second load, and forming a second resonant point set to a frequency different from the first resonant point; a first amplification unit receiving operating power via the first load of the first resonant load unit, having an amplification band characteristic determined according to the first resonant point of the first resonant load unit, and amplifying an input signal; and a second amplification unit receiving operating power via the second load, having an amplification band characteristic determined according to the second resonant point, and amplifying an input signal from the first amplification unit. | 12-09-2010 |
20110037522 | ACTIVE BALUN WITH STACKED STRUCTURE - An active balun with a stacked structure includes: a first amplification unit including a first transistor having a first terminal connected with a first input terminal, a second terminal connected with a power voltage terminal, and a third terminal connected with an output terminal; a second amplification unit including a second transistor having a first terminal connected with a second input terminal, a second terminal connected with the output terminal, and a third terminal connected with a ground; and a capacitance matching unit connected between the first terminal and the third terminal of the first transistor and having a pre-set matching capacitance. | 02-17-2011 |
20130057349 | CMOS POWER AMPLIFIER - There is provided a complementary metal oxide semiconductor (CMOS) power amplifier including: a load unit connected between an operating voltage supply terminal and an output terminal; an amplifying unit formed as a cascode structure between the load unit and a ground, amplifying a power of an input signal input through an input terminal and outputting the amplified signal through an output terminal; and a threshold voltage control unit varying a threshold voltage of the amplifying unit according to a magnitude of the input signal input through the input terminal. | 03-07-2013 |
20130285975 | TOUCH SCREEN PANEL AND TOUCH SCREEN APPARATUS - There are provided a touch screen panel and a touch screen apparatus. The touch screen panel includes a plurality of first electrodes formed on a substrate and extending in a first axis direction; and a plurality of second electrodes formed on the substrate and extending in a second axis direction perpendicular to the first axis direction, wherein a plurality of first slits are provided in a diagonal direction with respect to the first axis direction and the second axis direction between the plurality of first electrodes and the plurality of second electrodes, and at least one second slit is formed within each of the plurality of second electrodes. | 10-31-2013 |
20130321325 | APPARATUS AND METHOD FOR SENSING CAPACITANCE, AND TOUCH SCREEN APPARATUS - There are provided an apparatus for sensing capacitance, a method for sensing capacitance, and a touch screen apparatus. The apparatus for sensing capacitance includes; a first integration circuit unit including a first capacitor charged by a change in capacitance occurring in a sensing electrode; a comparison circuit unit comparing a level of an output signal of the first integration circuit unit with a predetermined reference level; and a noise removal unit including a plurality of switches operating according to an output of the comparison circuit unit, wherein the comparison circuit unit controls an operation of each of the plurality of switches to discharge charges charged in the first capacitor when the level of the output signal of the first integration circuit unit is higher than the reference level. | 12-05-2013 |
20130321326 | APPARATUS AND METHOD FOR SENSING CAPACITANCE, AND TOUCH SCREEN APPARATUS - There are provided an apparatus for sensing capacitance, a method for sensing capacitance, and a touch screen apparatus. The apparatus for sensing capacitance includes; a driving circuit unit applying driving signals to a first capacitor; an integration circuit unit including a second capacitor and a third capacitor respectively charged by a change in capacitance generated in the first capacitor based on the driving signals to generate a predetermined output voltage and calculating a voltage difference between the output voltage of the second capacitor and the output voltage of the third capacitor; and a control unit determining characteristics of a noise signal based on the voltage difference and controlling the driving signals based on the characteristics of the noise signal. | 12-05-2013 |
20140009216 | CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCH SCREEN APPARATUS - There is provided a capacitance sensing apparatus including: a driving circuit unit applying a driving signal to a first capacitor; a first integrating circuit unit including a second capacitor charged by a change in capacitance generated in the first capacitor based on the driving signal to generate a first output voltage; and a second integrating circuit unit including a third capacitor charged by a change in capacitance generated in the second capacitor to generate a second output voltage, wherein a level of the second output voltage is changed at least twice during a single period of the driving signal applied to the first capacitor. | 01-09-2014 |
20140009432 | CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCHSCREEN APPARATUS - There is provided a capacitance sensing apparatus including: a driving circuit unit applying a driving signal having a common level potential and first and second level potentials different from the common level potential to a first capacitor; a sensing circuit unit detecting a change in capacitance generated in the first capacitor; and a gain controlling circuit unit controlling a gain of the sensing circuit unit, wherein the sensing circuit unit includes a second capacitor charged by the change in capacitance of the first capacitor when a level of the driving signal is changed from the first level potential to the common level potential or changed from the common level potential to the second level potential. | 01-09-2014 |
20140035653 | CAPACITANCE SENSING DEVICE AND TOUCHSCREEN - There are provided a capacitance sensing device and a touchscreen, the capacitance sensing device including a driving circuit unit allowing a capacitor to be charged and discharged; and an integrating circuit unit integrating charges stored in the capacitor, wherein the integrating circuit unit integrates the charges stored in the capacitor to thereby output a first voltage having a positive polarity and a second voltage having a negative polarity. | 02-06-2014 |
20140035862 | CAPACITANCE SENSING APPARATUS AND TOUCH SCREEN APPARATUS - There is provided a capacitance sensing apparatus including a driving circuit unit applying a driving signal to a first capacitor at a predetermined interval; and a sensing circuit unit sensing a change in capacitance generated by the first capacitor based on the driving signal, in which a portion of a plurality of switches included in the sensing circuit unit operate at a first interval, the same as the interval of the driving signal, and remaining switches among the plurality of switches operate at a second interval, different from the first interval. | 02-06-2014 |
20140146000 | TOUCH SENSING DEVICE AND TOUCHSCREEN DEVICE - There are provided a touch sensing device and a touchscreen device, the touch sensing device including a driving circuit unit sequentially applying a driving signal to a plurality of respective driving electrodes, a sensing circuit unit connected to a plurality of sensing electrodes and measuring changes in capacitance in node capacitors formed by the plurality of driving electrodes and the plurality of sensing electrodes, and a noise removing unit providing a preset reference voltage to a driving electrode to which the driving signal is not applied, among the plurality of driving electrodes. | 05-29-2014 |
20140184556 | TOUCH SENSING APPARATUS AND TOUCH SENSING METHOD - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes: a panel unit including a plurality of driving electrodes and a plurality of sensing electrodes; a driving circuit unit applying driving signals to the plurality of driving electrodes, respectively; a sensing circuit unit measuring a change in capacitance of node capacitors generated in intersections of the plurality of the driving electrodes and the plurality of sensing electrodes; a signal conversion unit generating a first digital signal based on the change in capacitance; and a calculation unit determining a touch according to the first digital signal, wherein the driving circuit unit and the sensing circuit unit are operated by an input voltage, and the signal conversion unit and the calculation unit are operated by a low voltage drop out (LDO) voltage generated by decreasing the input voltage. | 07-03-2014 |
20140184557 | TOUCH SENSING APPARATUS - There is provided a touch sensing apparatus including: a panel unit including a plurality of driving electrodes and a plurality of sensing electrodes; a driving circuit unit applying one of a driving signal and a scanning signal having a frequency different from that of the driving signal, to each of the plurality of driving electrodes; a sensing circuit unit measuring a change in capacitance of a plurality of node capacitors generated in intersections of the plurality of driving electrodes and the plurality of sensing electrodes; and a calculation unit determining a touch based on a change in the capacitance, wherein when the scanning signal is applied to the plurality of driving electrodes, the calculation unit calculates capacitance deviations in the plurality of node capacitors from the deviations of changes in the capacitance generated by the plurality of node capacitors. | 07-03-2014 |
20140267144 | TOUCH SENSING DEVICE AND TOUCHSCREEN DEVICE - There are provided a touch sensing device and a touchscreen device. The touch sensing device according to an embodiment of the invention may include: a buffer unit including a buffer capacitor charged and discharged by a first voltage and a second voltage input at a predetermined period; an integrating circuit unit integrating a charging voltage of the buffer capacitor; a signal conversion unit comparing a voltage output from the integrating circuit unit with a predetermined reference voltage to generate the second voltage; and a touch determination unit counting the second voltage with a predetermined reference clock to determine a touch. | 09-18-2014 |
20140292708 | TOUCHSCREEN APPARATUS - There is provided a touchscreen apparatus, including a panel unit including a plurality of driving electrodes extended in a first axial direction and a plurality of sensing electrodes extended in a second axial direction intersecting with the first axial direction, a driving circuit unit applying predetermined inspection signals to a plurality of driving channels electrically connected to the plurality of driving electrodes, and an inspecting unit determining an occurrence of a short between at least one pair of adjacent driving electrodes among the plurality of driving electrodes by performing a logical operation on voltages of the plurality of driving channels. | 10-02-2014 |
20140375575 | STYLUS PEN AND TOUCHSCREEN MODULE - There are provided a stylus pen and a touchscreen module. The stylus pen includes a receiving unit receiving a predetermined driving signal; a synchronizing unit generating a signal synchronized with the received driving signal; a frequency adjusting unit changing a frequency of the synchronized signal; and a transmitting unit transmitting a signal output from the frequency adjusting unit. | 12-25-2014 |
20150162826 | APPARATUS FOR REGULATING OUTPUT VOLTAGE AND APPARATUS FOR BOOSTING VOLTAGE - There is provided an apparatus for regulating an output voltage, including: a sensing circuit sensing an output voltage from a charge pump; a comparator circuit receiving the output voltage from the sensing circuit so as to compare it with a predetermined reference voltage; and a limiter circuit regulating the output voltage according to an output signal from the comparator circuit. | 06-11-2015 |
20150184989 | TOUCH SENSING DEVICE AND TOUCHSCREEN DEVICE - There are provided a touch sensing device and a touchscreen device. The touch sensing device includes: a driving circuit applying a driving signal having a predetermined first period to a node capacitor; a buffer circuit converting capacitance of the node capacitor into a voltage signal; a buffer capacitor being charged and discharged depending on an output voltage from the buffer circuit; and an integration circuit integrating voltages charged in the buffer capacitor, wherein, in a normal touch mode, the buffer circuit integrates capacitance of the node capacitor to generate the voltage signal, and, in a proximity touch mode, the buffer circuit generates the voltage signal by following the voltages charged in the node capacitor. | 07-02-2015 |
20150301679 | TOUCHSCREEN DEVICE AND TOUCH SENSING METHOD - A touchscreen device may include a panel unit including a plurality of first electrodes and a plurality of second electrodes; a driving circuit unit sequentially applying a driving signal having a predetermined period to the plurality of first electrodes; a sensing circuit unit detecting levels of capacitance from the plurality of second electrodes; and a driving voltage generating unit generating a driving voltage. The driving voltage generating unit adjusts a level of the driving voltage depending on a detected voltage which is detected in a first electrode, to which the driving signal is applied, among the plurality of first electrodes in a calibration section. | 10-22-2015 |
20150355777 | INTEGRATION CIRCUIT, TOUCH INTERACTION SENSING APPARATUS, AND TOUCHSCREEN APPARATUS - An integration circuit may include a plurality of switches, at least one operational amplifier, and at least one feedback capacitor, sequentially transfers electrical charges charged in a node capacitor to the feedback capacitor, and integrates the electrical charges. The operational amplifier may be synchronized with a clock signal applied to at least one of the plurality of switches to thereby be operated in one of a normal mode and a low power mode. | 12-10-2015 |