Patent application number | Description | Published |
20100002491 | RESISTANCE RAM HAVING OXIDE LAYER AND SOLID ELECTROLYTE LAYER, AND METHOD FOR OPERATING THE SAME - A resistance RAM that is provided with an oxide layer and a solid electrolyte layer, and a method for operating the same are provided. The resistance RAM comprises a first electrode, an oxide layer that is formed on the first electrode, a solid electrolyte layer that is disposed on the oxide layer, and a second electrode that is disposed on the solid electrolyte layer. The method comprises the step of forming a conductive tip in the oxide layer by applying reference voltage to any one of the electrodes of the resistance RAM, applying foaming voltage to the remain one, such that the oxide layer is electrically broken. A conductive filament is formed in the solid electrolyte layer by applying a positive voltage to the second electrode on the basis of the voltage that is applied to the first electrode. The conductive filament that is formed in the solid electrolyte layer is removed by applying a negative voltage to the second electrode on the basis of the voltage that is applied to the first electrode. | 01-07-2010 |
20110175052 | RESISTANCE-VARIABLE MEMORY DEVICE INCLUDING CARBIDE-BASED SOLID ELECTROLYTE MEMBRANE AND MANUFACTURING METHOD THEREOF - Disclosed are a resistance-variable memory device including a carbide-based solid electrolyte membrane that has stable memory at a high temperature and a manufacturing method thereof. The resistance-variable memory device includes: a lower electrode, the carbide-based solid electrolyte membrane arranged on the lower electrode, and an upper electrode arranged on the solid electrolyte membrane. In addition, the method for manufacturing the resistance-variable memory device comprises: a step for forming the lower electrode on a substrate, a step for forming the carbide-based solid electrolyte membrane on the lower electrode, and a step for forming the upper electrode on the solid electrolyte membrane. | 07-21-2011 |
20110309322 | RESISTANCE CHANGE MEMORY DEVICE WITH THREE-DIMENSIONAL STRUCTURE, AND DEVICE ARRAY, ELECTRONIC PRODUCT AND MANUFACTURING METHOD THEREFOR - Provided are a resistance change memory device with a three-dimensional structure, a resistance change memory device array, an electronic product, and a manufacturing method therefor. The device array includes a plurality of first directional data lines which are arranged on a substrate in parallel. A conductive pillar is positioned between sidewalls of the first directional data lines, which face each other. A resistance change material film is positioned between the sidewall of the conductive pillar and the sidewall of the data lines that are adjacent to the sidewall of the conductive pillar. | 12-22-2011 |
20130021835 | RESISTIVE RAM, METHOD FOR FABRICATING THE SAME, AND METHOD FOR DRIVING THE SAME - A resistive random access memory (ReRAM) includes a first electrode, a threshold switching layer formed over the first electrode and configured to perform a switching operation according to an applied voltage, a resistance change layer formed over the threshold switching layer, and configured to perform a resistance change operation, and a second electrode formed over the resistance change layer, wherein the threshold switching layer comprises a stoichiometric transition oxide while the resistance change layer comprises a non-stoichiometric transition metal oxide. | 01-24-2013 |
20130026435 | SWITCHING DEVICE AND RESISTANCE CHANGE MEMORY DEVICE USING THE SAME - A switching device that provides bipolar current paths and a resistance change memory device using the switching device. The switching device includes a first electrode, a second electrode, and an amorphous carbon layer interposed between the first electrode and the second electrode and configured to control a bipolar current to flow therethrough in response to a voltage applied between the first electrode and the second electrode. | 01-31-2013 |
20130300509 | FREQUENCY TUNING APPARATUS, OPERATING METHOD THEREOF, AND RF CIRCUIT INCLUDING THE FREQUENCY TUNING APPARATUS - A frequency tuning apparatus may include an oscillator and a memory element connected to the oscillator. The memory element may have a variable resistance. An oscillation frequency of the oscillator may vary according to a resistance state of the memory element. The oscillator may be a ring oscillator. The memory element may be connected to an input terminal or a power terminal of the oscillator. | 11-14-2013 |
20130301338 | HYBRID RESISTIVE MEMORY DEVICES AND METHODS OF OPERATING AND MANUFACTURING THE SAME - Hybrid resistive memory devices and methods of operating and manufacturing the same, include at least two resistive memory units. At least one of the at least two resistive memory units is a resistive memory unit configured to operate in a long-term plasticity state. | 11-14-2013 |
20150318041 | RESISTIVE RAM, METHOD FOR FABRICATING THE SAME, AND METHOD FOR DRIVING THE SAME - A resistive random access memory (ReRAM) includes a first electrode, a threshold switching layer formed over the first electrode and configured to perform a switching operation according to an applied voltage, a resistance change layer formed over the threshold switching layer, and configured to perform a resistance change operation, and a second electrode formed over the resistance change layer, wherein the threshold switching layer comprises a stoichiometric transition oxide while the resistance change layer comprises a non-stoichiometric transition metal oxide. | 11-05-2015 |
20150318474 | RESISTIVE RAM, METHOD FOR FABRICATING THE SAME, AND METHOD FOR DRIVING THE SAME - A resistive random access memory (ReRAM) includes a first electrode, a threshold switching layer formed over the first electrode and configured to perform a switching operation according to an applied voltage, a resistance change layer formed over the threshold switching layer, and configured to perform a resistance change operation, and a second electrode formed over the resistance change layer, wherein the threshold switching layer comprises a stoichiometric transition oxide while the resistance change layer comprises a non-stoichiometric transition metal oxide. | 11-05-2015 |
Patent application number | Description | Published |
20140291598 | RESISTIVE RANDOM ACCESS MEMORY - Disclosed is a nonvolatile resistive random access memory. The nonvolatile resistive random access memory includes an upper electrode, a lower electrode, an ion supply layer formed on the lower electrode, and a resistance change layer formed on the ion supply layer. The ion supply layer includes copper-doped carbon. A low-power switching operation is performed because the optimal filament is formed by limiting the number of supplied ions, without using the existing method that supplies infinite ions by using a metal electrode. | 10-02-2014 |
20140291599 | RESISTIVE RANDOM ACCESS MEMORY - Disclosed is a nonvolatile resistive random access memory. The nonvolatile resistive random access memory includes a first electrode, a second electrode, an ion conducting layer disposed between the first and second electrodes, a first heat diffusion preventing layer formed on the first electrode, and a second heat diffusion preventing layer formed on the second electrode. Since a temperature of a switching region of a device increases by adding the heat diffusion preventing layer, an operation speed increases by ten or more times, and a data retention of the device can be identically maintained. Accordingly, a voltage-time dilemma can be solved without an increase in an area of the device, thereby improving a degree of integration. | 10-02-2014 |
20150117090 | THREE-TERMINAL SYNAPSE DEVICE AND METHOD OF OPERATING THE SAME - A three-terminal synapse device may include a drain layer formed on a substrate, a gate layer formed on the drain layer, a source layer vertically stacked on the substrate and facing the drain layer and the gate layer. First and second vertical insulating layers may be formed between the source layer and a stack including the drain layer and the gate layer. The first and second vertical insulating layers have different ion mobilities from each other. The first and second vertical insulating layers may cover side surfaces of the drain layer and the gate layer. The ion mobility of the second vertical insulating layer may be greater than that of the first vertical insulating layer. | 04-30-2015 |
20150221701 | MEMORY DEVICE AND MEMORY CELL ARRAY - A resistive memory device includes a stack of two layers of variable resistance material and top, middle, and bottom electrodes, the stack symmetrical in composition about the middle electrode. | 08-06-2015 |
Patent application number | Description | Published |
20140248153 | PROPULSION DEVICE FOR SHIP AND SHIP HAVING THE SAME - Disclosed are a propulsion device for a ship and a ship having same. The propulsion device, according to an embodiment of the present invention, comprises: a rear propeller fixed to a first driveshaft; a front propeller positioned in front of the rear propeller and supported rotably on the first driveshaft; a counter rotation device, which penetrates the hull, and which counter-rotates the front propeller and the rear propeller on the basis of the rotation of a second driveshaft, which is installed perpendicular to the first driveshaft; and a housing installed so as to envelope the second driveshaft and the counter rotation device. | 09-04-2014 |
20150030452 | PROPULSION DEVICE FOR SHIP AND SHIP HAVING THE SAME - Disclosed are a propulsion device for a ship and a ship having same. The propulsion device, according to an embodiment of the present invention, comprises: a rear propeller fixed to a driveshaft; a front propeller positioned in front of the rear propeller, and supported rotably on the driveshaft; and a counter rotation device for reversing and transmitting the rotation of the driveshaft to the front propeller; a motor for rotating the driveshaft; and an housing, which extends from to the lower part of the hull, and which is installed so as to envelope the counter rotation device and the motor. | 01-29-2015 |
20150071780 | PROPULSION APPARATUS FOR SHIP AND SHIP HAVING THE SAME - Provided are a propulsion device for a ship and a ship including the same. The propulsion device for the ship includes: a rear propeller fixed to a rotation shaft; a front propeller that is rotatably supported on the rotation shaft in the front of the rear propeller; at least one bearing interposed in at least one of spaces between a hub of the front propeller and the rotation shaft and between the rotation shaft and a ship body; and an inverse rotation unit that inverts rotation of the rotation shaft, transfers the inverted rotation to the front propeller and includes a gearbox that is accommodated in an installation space formed in a tail of the ship body in a state in which a plurality of gears for implementing inversion of the front propeller are embedded, wherein at least one measurement unit for measuring operating states of the at least one bearing is mounted to the rotation shaft. | 03-12-2015 |
20150098824 | PROPULSION APPARATUS FOR SHIP - Provided is a ship propelling apparatus including a rotation shaft on which a rear propeller is fixed; a front propeller rotatably supported on the rotation shaft in front of the rear propeller; and a counter-rotating device through which the rotation shaft passes, which includes a gear box including therein a plurality of gears configured to reverse rotation of the rotation shaft and transfer the reversed rotation to the front propeller, and which is installed in an installation space formed at the rear of a ship. The rotation shaft includes a measurement hole formed to pass through a center of the rotation shaft for centering of the counter-rotating device installed in the installation space; and an individual lubricant path separated from the measurement hole. | 04-09-2015 |
20150314846 | PROPELLER FOR SHIP, AND ASSEMBLING METHOD AND DISASSEMBLING METHOD THEREFOR - Disclosed are a propulsion system for a ship, a method of assembling the same, and a method of disassembling the same. The propulsion system for the ship includes: a rear propeller fixed to a rotary shaft; a front propeller that is rotatably supported on the rotary shaft in front of the rear propeller; a contra-rotating device that is mounted in an installation space at a rear end of a hull so as to reverse the rotation of the rotary shaft and transmit the reversed rotation to the front propeller; a propeller connecting member that connects the contra-rotating device and the front propeller to transmit a rotational force; and a thrust supporting device that is provided between the contra-rotating device and the propeller connection member to support thrust of the front propeller. | 11-05-2015 |
Patent application number | Description | Published |
20100183150 | Shared key management method, shared key generating method and message communication method for scada system, and recording medium - A shared key management method for a Supervisory Control And Data Acquisition (SCADA) system in which a master terminal unit (MTU), a plurality of sub master terminal units (SUB-MTUs), and a plurality of remote terminal units (RTUs) are configured in a sequential hierarchy, is provided. The method includes: (a) at the MTU, generating a plurality of secret keys and respectively allocating the secret keys to the RTUs; (b) at the MTU, generating a group key in a tree structure, wherein a leaf node of the tree structure corresponds to each RTU, a parent node of a node corresponding to an RTU corresponds to a SUB-RTU to which the RTU is connected, a shared key of each node of the group key is generated by hashing shared keys of all child nodes, and a shared key of a leaf node of the group key is set as a secret key of the RTU; (c) at the RTU or the SUM-MTU, receiving and storing shared keys of every node from a node corresponding to itself to a root node; (d) when the RTU or the SUM-MTU is added or deleted, at the MTU, generating shared keys of nodes along a path from a node corresponding to the added or deleted terminal unit to the root node again; and (e) at the RTU or the SUB-MTU, receiving and storing the generated shared keys. According to the key management method for the SCADA system described above, in the case of encrypting and broadcasting or multicasting a message, a computation amount can be reduced. | 07-22-2010 |
Patent application number | Description | Published |
20090289915 | DISPLAY DEVICE WITH OPTICAL SENSORS - A display device with a touch screen includes: first sensing units, each first sensing unit comprising first optical sensors connected in series, each first sensing unit comprising a first terminal for receiving a first voltage, each first sensing unit extending in a first direction; second sensing units, each second sensing unit comprising second optical sensors connected in series, each second sensing unit comprising a first terminal for receiving a second voltage, each second sensing unit extending in a second direction transverse to the first direction; a reset unit for applying a reset voltage to a second terminal of each of the first and second sensing units; and a read-out unit for sensing a touch position based on voltage changes at the second terminals of the first and second sensing units. | 11-26-2009 |
20100013788 | TOUCH SENSOR AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A touch sensor configured to be disposed in a liquid crystal display panel includes a plurality of x-axis read-out lines crossing and insulated from a plurality of y-axis read-out lines and a plurality of sensor units. Each sensor unit includes a reset unit, a capacitance detector, a first output unit, and a second output unit. The reset unit outputs a first reset signal based on a first control signal. The capacitance detector changes the first reset signal based on a variation of a cell gap of the liquid crystal display panel caused by a touch event. The first output unit changes an electric potential of a corresponding x-axis read-out line in response to the first reset signal changed in the capacitance detector. The second output unit changes an electric potential of a corresponding y-axis read-out line in response to the first reset signal changed in the capacitance detector. | 01-21-2010 |
20110057902 | TOUCH SENSOR AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A liquid crystal display panel includes a touch sensor and the touch sensor includes a plurality of x-axis read-out lines, a plurality of y-axis read-out lines crossing the x-axis read-out lines, a plurality of sensor units provided in a plurality of regions defined by the x-axis read-out lines and the y-axis read-out lines. Each sensor unit comprises a reset unit that outputs a sampling voltage based on a reset voltage, a capacitance detector that generates a modified sampling voltage from the sampling voltage based on a variation of a cell gap of the display panel caused by a touch of the display panel, a first output unit that changes an electric potential of a corresponding x-axis read-out line in response to the modified sampling voltage and a second output unit that changes an electric potential of a corresponding y-axis read-out line in response to the modified sampling voltage. | 03-10-2011 |
20120169783 | DISPLAY DRIVING CIRCUIT AND OPERATING METHODS - A display driving circuit includes a buffer unit receiving gradation voltages and generating data signals that drive a panel. A first buffer unit includes “M” main buffers corresponding to M data lines of the panel and a second buffer unit comprises “N” sub buffers, N being less than M. A first switch unit controls a transmission path along which the gradation voltages are applied to the buffer unit, and a second switch unit controls a transmission path along which the data signals are supplied to the data lines. Switches in the second switch unit are turned ON during charge sharing. | 07-05-2012 |
20130100004 | DRIVING APPARATUS AND DISPLAY DRIVING SYSTEM INCLUDING THE SAME - A driving apparatus and a display driving system. The driving apparatus includes a first amplification unit receiving a first signal and outputting a driving signal of a positive polarity voltage with respect to a reference voltage, a second amplification unit receiving a second signal and outputting a driving signal of a negative polarity voltage with respect to the reference voltage, and a controller for determining a chopping signal applied to a chopping terminal of the second amplification unit such that an offset polarity of an output voltage of the first amplification unit and an offset polarity of an output voltage of the second amplification unit are the same. | 04-25-2013 |
20140253531 | GATE DRIVER AND DISPLAY DRIVER CIRCUIT - A gate driver for driving gate lines of a display panel includes a scan signal generator configured to generate a scan signal for selecting one of the gate lines, and an output circuit. The output circuit is configured to receive a gate-on voltage, a first gate-off voltage, and a second gate-off voltage. The gate-on voltage is a voltage that turns on at least one transistor connected to the selected gate line, and the first gate-off voltage and the second gate-off voltage are voltages that turn off the at least one transistor connected to the selected gate line. The output circuit is configured to output the gate-on voltage to the selected gate line in response to a first state of the scan signal, and sequentially output the first gate-off voltage and the second gate-off voltage to the selected gate line in response to a second state of the scan signal. | 09-11-2014 |
20140320464 | CHARGE SHARING METHOD FOR REDUCING POWER CONSUMPTION AND APPARATUSES PERFORMING THE SAME - A charge sharing method, device, and system is disclosed. For example, a charge sharing method for a display driver is disclosed. The method includes: receiving a first row of data for a first row of source lines; receiving a second row of data for a second row of source lines; for each source line of at least a first group of the source lines, determining whether a change amount between data for that source line from the first row of data and data for that source line from the second row of data is above a threshold; and performing selective charge sharing based on the determinations. | 10-30-2014 |
20150357998 | METHOD OF OPERATING CHANNEL BUFFER BLOCK AND DEVICES INCLUDING THE CHANNEL BUFFER BLOCK - A method of operating a channel buffer block is provided. The method includes changing bias voltages applied to bias lines in an input stage included in the channel buffer block using a coupling effect of coupling capacitors during a slewing interval and increasing bias currents in the input stage using input voltages and changed bias voltages. | 12-10-2015 |
20160071455 | DISPLAY DRIVER AND DISPLAY METHOD - A display driver and display method are provided. The display driver includes a line buffer which receives a plurality of first pixel data corresponding to a first line, and a controller which receives a plurality of second pixel data corresponding to a second line that is different from the first line. The controller also receives the first pixel data from the line buffer, classifies the second pixel data into a plurality of transition types based on the first pixel data and the second pixel data, calculates one or more characteristic values indicating characteristics of each transition type, and determines whether to perform charge sharing of channels based on the characteristic values. | 03-10-2016 |
20160093270 | DISPLAY DRIVING CIRCUIT AND DISPLAY DRIVING METHOD - A display driving circuit includes a first bias circuit, a second bias circuit, a selector, and an output buffer. The first bias circuit generates a first bias voltage set. The second bias circuit generates a second bias voltage set. The selector selects one of the first and second bias voltage sets based on a bias selection signal. The output buffer buffers a grayscale voltage corresponding to display data and outputs the buffered grayscale voltage The output buffer is biased based on the first or second bias voltage set selected by the selector. | 03-31-2016 |