Patent application number | Description | Published |
20090032292 | PRINTED CIRCUIT BOARD REINFORCEMENT STRUCTURE AND INTEGRATED CIRCUIT PACKAGE USING THE SAME - A printed circuit board reinforcement structure for a printed circuit board receiving a plurality of surface mounting devices, and an integrated circuit package using the same. The structure includes a hard layer having one or more openings formed at areas corresponding to one or more surface mounting devices with a thickness exceeding a predetermined thickness; and a soft layer bonded to a side of the hard layer so that the soft layer can accommodate the protrusion of the surface mounting devices. The structure prevents defects of a printed circuit board, such as deformation, fracture or the like, while substantially reducing the size of a package by applying a reinforcement structure to a thin printed circuit board, thereby reinforcing the rigidity (mechanical strength) of the thin printed circuit board. | 02-05-2009 |
20090297945 | NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE HAVING THE SAME AND LITHIUM SECONDARY BATTERY - A lithium secondary battery includes a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, a separator separating the positive electrode from the negative electrode, and an electrolyte. The negative electrode active material includes a graphite core particle, at least one metal particle located on the graphite core particle, and a polymer film coating the graphite core particle and the at least one metal particle. The polymer includes a polyimide- or polyacrylate-based polymer. | 12-03-2009 |
20100011573 | METHOD FOR FABRICATING PRINTED CIRCUIT BOARD - A method for fabricating a printed circuit board is provided. The method includes manufacturing a base film including a first side and a second side opposite to the first side; printing a first wiring on the first side with a high-viscosity conductive material having a viscosity of 5,000 to 300,000 centipoise (CPS); forming a via-hole that passes through both sides of the base film, and passes by the first wiring; and printing a second wiring on the second side with a low-viscosity conductive material having a viscosity of 100 to 5,000 CPS. The low-viscosity conductive material is applied to an inner wall of the via-hole to conductively connect the first wiring to the second wiring. | 01-21-2010 |
20100025080 | PRINTED CIRCUIT BOARD WITH CONDUCTIVE INK/PASTE, HAVING PLATING LAYERS, AND METHOD FOR MANUFACTURING THE SAME - A Printed Circuit Board (PCB) and a method for manufacturing the same are provided. A circuit pattern is formed by printing conductive ink/paste on a substrate, and sintering a layer of the conductive ink or curing a layer of the conductive paste by applying heat. A primary plating layer is formed through electroless plating or electrolytic plating of a high-melting point metal on the circuit pattern. A secondary plating layer is formed through electroless plating or electrolytic plating of a precious metal on the primary plating layer to improve wetting with solder. | 02-04-2010 |
20100156749 | ANTENNA DEVICE AND METHOD OF MANUFACTURING THE SAME - A signal transmitting/receiving antenna device for Radio Frequency Identification (RFID) which executes contactless data communication, and a method of manufacturing the same. The antenna device includes an antenna module including a dielectric film substrate, an antenna pattern which is a conductive pattern printed on the top and bottom sides of the dielectric film substrate, the top and bottom antenna pattern parts being Connected to each other through one or more via holes extending through the dielectric film substrate, and top and bottom passivation layers formed on the dielectric film substrate to cover the top and bottom antenna pattern parts; and a radio wave absorbent printed on one of the top and bottom passivation layers of the antenna module. | 06-24-2010 |
20100196755 | ELECTRODE ASSEMBLY AND SECONDARY BATTERY HAVING THE SAME - An electrode assembly and a secondary battery having the same, which include a positive electrode having a positive electrode active material layer deposited on a positive electrode collector, a negative electrode having a negative electrode active material layer deposited on a negative electrode collector, and a separator separating the positive electrode from the negative electrode. The negative electrode active material layer includes a negative electrode active material of a metal-graphite complex, and the thickness of the negative electrode collector is in the range from 16.3 to 24.2% of that of the negative electrode active material layer. The thickness of the secondary battery can be reduced while maintaining battery capacity by controlling the ratio of the thickness of the negative active material layer to the negative electrode collector and controlling the tensile stress of the negative electrode collector. | 08-05-2010 |
20100259453 | INTERNAL ANTENNA AND PORTABLE COMMUNICATION TERMINAL USING THE SAME - An internal antenna is provided that includes a first antenna having a first antenna pattern formed on a first dielectric layer, and a second antenna having a second antenna pattern formed on a second dielectric layer. The second dielectric layer has a higher dielectric constant than the first dielectric layer. The first and second antenna patterns are electrically connected to each other. | 10-14-2010 |
20100279172 | RECHARGEABLE LITHIUM BATTERY - A rechargeable lithium battery including: a negative electrode having a composite negative active material of a metal and a carbonaceous material; a positive electrode having a mixed positive active material of about 90 to 99 wt % of a first positive active material selected from cobalt, manganese, phosphate acid-based, or combinations thereof and about 1 to about 10 wt % of a nickel-based second positive active material; and a non-aqueous electrolyte. | 11-04-2010 |
20100285359 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY COMPRISING SAME - A negative active material for a rechargeable lithium battery includes: a crystalline carbon core including pores; an amorphous carbon shell positioned on the core surface; metal nanoparticles dispersed inside the pores; and amorphous carbon inside the pores, wherein a first particle diameter difference (D50−D10) of the nanoparticles is from about 70 to about 150 nm and the second particle diameter difference (D90−D50) of the nanoparticles is from about 440 to about 520 nm. | 11-11-2010 |
20110062914 | SYSTEM AND METHOD FOR EFFICIENT WIRELESS CHARGING OF A MOBILE TERMINAL - Disclosed is a method and apparatus for efficient wireless charging of a mobile terminal. The method includes detecting the mobile terminal by a charging apparatus, receiving a unique identifier of the mobile terminal from the mobile terminal and determining if the mobile terminal is a rechargeable device, when the mobile terminal is a rechargeable device, applying a direct voltage to a first coil of the charging apparatus and arranging the charging apparatus and the mobile terminal, and terminating an application of the direct voltage and then applying an alternating voltage, to supply charging power required for the mobile terminal. | 03-17-2011 |
20110115433 | WIRELESS CHARGER FOR CHARGING CONTROL AND CHARGING CONTROL METHOD THEREFOR - A coil structure and a charging control method in a wireless charger having a primary coil are provided to supply an induced electromotive force suitable for a charging target having a secondary coil. Concentric coils having different radii are arranged in a wireless charger, and a coil suitable for the location of a charging target placed on the wireless charger is selected. An input power corresponding to the selected coil is determined, and the determined power is applied to the selected coil. Then the same charging efficiency can be provided irrespective of a location of a charging target placed on the wireless charger. | 05-19-2011 |
20110198938 | WIRELESS POWER TRANSMISSION AND RECEPTION APPARATUS HAVING RESONANCE FREQUENCY STABILIZATION CIRCUIT AND METHOD THEREOF - A wireless power transmission apparatus and method for wirelessly transmitting power to a wireless power reception apparatus electromagnetically coupled to the wireless power reception apparatus and supplying power for loads of the wireless power reception apparatus is provided. The apparatus includes a power generator for generating power having a fixed oscillation frequency; a power transmission resonator, which has a resonance frequency identical to the oscillation frequency, for wirelessly transmitting the power generated by the power generator to the wireless power reception apparatus; and a power transmission resonance frequency controller for controlling the resonance frequency of the power transmission resonator in response to a change of the resonance frequency of the power transmission resonator. | 08-18-2011 |
20110228490 | LARGE CAPACITY MEMORY MODULE MOUNTING DEVICE FOR PORTABLE TERMINAL - A large capacity memory module mounting device employed in a portable terminal is provided, including a large capacity memory module including a plurality of first contact pads; and a flexible circuit board including a plurality of second contact pads and electrically connected to the large capacity memory module by forming solder pads in a heating process after the first and second contact pads are positioned in a face-to-face manner. Accordingly, the large capacity memory module can be advantageously mounted to the portable terminal and an electromagnetic field can be effectively shielded. | 09-22-2011 |
20120098485 | WIRELESS CHARGING METHOD AND APPARATUS - A wireless charging method includes synchronizing power phases of at least two charging power supply devices, and wirelessly charging a terminal using the at least two charging power supply devices. | 04-26-2012 |
20120293007 | POWER TRANSMITTING METHOD AND POWER TRANSMITTER FOR COMMUNICATION WITH POWER RECEIVER - A method and power transmitter for efficiently controlling power transmission to one or more power receivers in a wireless multi-power transmission system are provided. The method includes performing, when a predetermined measurement cycle arrives, a load measurement; comparing a current load measurement value with a previous load measurement value; determining whether the current load measurement value is increased over the previous load measurement value by at least as much as a first predetermined threshold; gradually increasing, when the load measurement value is increased over the previous load measurement value by at least as much as the first threshold, a transmission power value until a request for a subscription to a wireless multi-power transmission network from a power reception target within a predetermined time limit; and stopping, when the request for the subscription is not received before the time limit is exceeded, power transmission to the power reception target. | 11-22-2012 |
20120293008 | WIRELESS POWER RECEIVER AND METHOD FOR CONTROLLING THE SAME - A wireless power receiver that receives wireless power from a wireless power transmitter and a control method thereof are provided, wherein the wireless power receiver receives the wireless power from the wireless power transmitter; rectifies the wireless power; monitoring a voltage value of the rectified wireless power; determines whether a ripple of the voltage value of the wireless power is greater than or equal to a preset threshold; and if the ripple of the voltage value of the wireless power is greater than or equal to the preset threshold, changes at least one element value of the wireless power receiver to suppress the ripple below the preset threshold. | 11-22-2012 |
20120293010 | METHOD AND APPARATUS FOR CONTROLLING WIRELESS POWER TRANSMISSION - A wireless power transmission controlling apparatus and method are provided. The apparatus includes a power amplifier that receives a source power, amplifies the received source power, and outputs a wireless power transmission signal from the amplified received source power, a band pass filter that filters the wireless power transmission signal, and passes a harmonic wave corresponding to a communication frequency band, and a communication unit that transmits a wireless power transmission control signal using the harmonic wave corresponding to the communication frequency band. | 11-22-2012 |
20120293011 | POWER TRANSMITTING AND RECEIVING APPARATUS AND METHOD FOR PERFORMING A WIRELESS MULTI-POWER TRANSMISSION - An apparatus and method are provided for transmitting and receiving power for wireless power transmission. A power transmitting apparatus includes a power supplier for generating power; a resonator for transmitting the power generated by the power supplier to a plurality of power receiving apparatuses; and a controller for determining whether a power transmission to a new power receiving apparatus is possible using a power receiving apparatus management table, when the new power receiving apparatus is detected while the power transmissions of the plurality of power receiving apparatuses are being performed, and controlling the resonator to transmit power to the new power receiving apparatus, when the power transmission to the new receiving apparatus is possible. The power transmitting apparatus stably supplies power to a plurality of power receiving apparatuses by determining power transmission states of the plurality of power receiving apparatuses. | 11-22-2012 |
20120293119 | WIRELESS CHARGING APPARATUS AND METHOD - Methods and apparatus for wireless charging are provided. Transmission power transmitted from a wireless power transmitter is received at a power receiver of a wireless power receiver. A battery of the wireless power receiver is charged with the received transmission power. It is determined whether the battery is fully charged. A packet from a communication unit of the wireless power receiver is transmitted to the wireless power transmitter when the battery is fully charged. An auxiliary charge of the battery is performed by receiving strength-reduced transmission power from the wireless power transmitter. | 11-22-2012 |
20120306284 | WIRELESS POWER SYSTEM COMPRISING POWER TRANSMITTER AND POWER RECEIVER AND METHOD FOR RECEIVING AND TRANSMITTING POWER OF THE APPARATUSES - Provided is a transmitter in a wireless power transmission system, the transmitter including a Transmission (Tx) power converter for converting a Direct Current (DC) voltage into a first Alternating Current (AC) voltage, and converting the converted first AC voltage into a second AC voltage by amplifying the converted first AC voltage, a Tx matching circuit for matching an impedance thereof with that of a receiver for receiving the second AC voltage to transmit the second AC voltage, a Tx resonator for resonating the second AC voltage into resonant waves to transmit the second AC voltage to the receiver, and a Tx controller for determining an amplification rate of the first AC voltage and controlling the Tx power converter to convert the first AC voltage into the second AC voltage according to the determined amplification rate. | 12-06-2012 |
20120313445 | WIRELESS POWER TRANSMISSION APPARATUS AND SYSTEM - A wireless power transmission apparatus includes a wireless power transmitter for wirelessly transmitting power to at least one wireless power receiver by magnetic resonance coupling; and a master wireless power receiver that is wire-connected to the wireless power transmitter for communication, and performs peer-to-peer wireless communication with the at least one wireless power receiver. A resonant frequency used for the peer-to-peer wireless communication between the master wireless power receiver and the at least one wireless power receiver is identical to a resonant frequency used for the wireless power transmission between the wireless power transmitter and the at least one wireless power receiver. | 12-13-2012 |
20120313446 | METHOD AND APPARATUS FOR CONTROLLING WIRELESS POWER OF A RECEIVER IN A WIRELESS POWER TRANSMISSION/RECEPTION SYSTEM - A method and apparatus are provided for controlling power of a receiver in a wireless power transmission/reception system, wherein a wireless power quantity supplied to receivers from a transmitter is controlled through communication between the receivers. The method includes receiving required power information transmitted from a joining receiver in a charging area of a transmitter; determining whether the transmitter is capable of supplying required power to the joining receiver based on the required power information; and requesting the joining receiver to maintain a standby state, when the transmitter is not capable of supplying the required power to the joining receiver. | 12-13-2012 |
20120313447 | METHOD OF PERFORMING BIDIRECTIONAL COMMUNICATION BETWEEN TRANSMITTER AND RECEIVER IN WIRELESS POWER TRANSMISSION/RECEPTION SYSTEM, THE TRANSMITTER, AND THE RECEIVER - A method and apparatus for performing bidirectional communication between a transmitter and a receiver in a wireless power transmission system are provided. The method includes detecting the receiver; transmitting, when the receiver is detected, transmitting a predetermined level of power to the receiver through a transmission (Tx) resonator; receiving a request for transmitting wireless power from the receiver through a wireless communication module; allocating a Short IDentification (SID) and a time slot corresponding to the receiver; transmitting the SID and the time slot to the receiver through the wireless communication module; receiving a request for required power from the receiver through the wireless communication module; determining whether the required power is greater than a residual power of the transmitter; and when the required power is greater than the residual power, informing the receiver through the wireless communication module that the required power cannot be transmitted. | 12-13-2012 |
20130015813 | WIRELESS POWER RECEIVERAANM KIM; Joon-IlAACI SeoulAACO KRAAGP KIM; Joon-Il Seoul KRAANM Park; Sung-BumAACI Suwon-siAACO KRAAGP Park; Sung-Bum Suwon-si KRAANM Park; Se-HoAACI Suwon-siAACO KRAAGP Park; Se-Ho Suwon-si KRAANM Lee; Young-MinAACI Yongin-siAACO KRAAGP Lee; Young-Min Yongin-si KRAANM Lee; Woo-RamAACI Hwaseong-siAACO KRAAGP Lee; Woo-Ram Hwaseong-si KR - A wireless power receiver is provided for wirelessly receiving driving power from a wireless power transmitter. The wireless power receiver includes a power reception unit for wirelessly receiving the driving power from the wireless power transmitter. The wireless power receiver also includes a rectifier for rectifying the driving power output from the power reception unit into an Alternating Current (AC) power type. The wireless power receiver additionally includes a load unit for storing the rectified driving power output from the rectifier. The wireless power receiver further includes a controller for detecting an amount of the rectified driving power stored in the load unit to control output from the rectifier to the load unit. The wireless power receiver also includes an impedance adjuster for adjusting an impedance in the power reception unit according to the amount of the rectified driving power stored in the load unit. | 01-17-2013 |
20130038278 | PORTABLE TERMINAL HAVING A WIRELESS CHARGER COIL AND AN ANTENNA ELEMENT ON THE SAME PLANE - A portable terminal having a wireless charger coil and an antenna element on the same plane is provided, in which a shielding member is attached to an inner surface of an external part, a first coil is attached to one surface of the shielding member, facing the inner surface of the external part, and a second coil is attached to the one surface of the shielding member, surrounding the first coil on the same plane. | 02-14-2013 |
20130043737 | WIRELESS POWER RECEIVER FOR CONTROLLING WIRELESS POWER BY USING SWITCH - A wireless power receiver for wirelessly receiving a supply of power from a wireless power supplier is disclosed. The wireless power receiver includes a power reception unit for wirelessly receiving wireless power from the wireless power supplier; a rectifier for rectifying the wireless power into power including a DC waveform; a power adjustor for configuring a closed loop with the power reception unit for a first period and transferring the wireless power to the rectifier for a second period to adjust a size of the wireless power; and a controller for determining the first period and the second period, wherein the power adjustor is electrically connected to the power reception unit and the rectifier. | 02-21-2013 |
20130057079 | APPARATUS AND METHOD OF CONTROLLING WIRELESS POWER TRANSMISSION - An apparatus for controlling wireless power transmission includes a near-field wireless communication antenna for receiving wireless power transmission control signals from a power transmitting device at a communication frequency, a near-field wireless communication Integrated Circuit (IC) for delivering wireless power transmission control messages based on the wireless power transmission control signals received through the near-field wireless communication antenna to a power IC, a Wireless Power Transmission (WPT) coil for resonating at a frequency band corresponding to a resonant frequency of the power transmitting device, to receive power supplied from the power transmitting device, and the power IC for controlling output of a constant voltage, using the supply power received by the WPT coil, based on the wireless power transmission control messages from the near-field wireless communication IC. | 03-07-2013 |
20130063082 | WIRELESS POWER RECEIVER AND CONTROL METHOD THEREOF - Methods and apparatus are provided for controlling a wireless power receiver for wirelessly receiving power. A drive power for driving the wireless power receiver is received from a wireless power transmitter. A communication network is established with the wireless power transmitter. A wireless power network that is controlled by the wireless power transmitter is joined. A charge power is received from the wireless power transmitter. | 03-14-2013 |
20130082651 | APPARATUS AND METHOD FOR WIRELESS CHARGING - Methods and apparatus are provided for wireless charging. Wireless power is supplied by a wireless power supply apparatus and is received at a wireless power reception apparatus. Wireless charging is performed by the wireless power reception apparatus. It is determined whether a human body is approaching while the wireless power reception power apparatus is receiving the wireless power. The wireless charging is interrupted, when it is determined that the human body is approaching. | 04-04-2013 |