Patent application number | Description | Published |
20080197957 | Coil unit and electronic instrument - A coil unit includes a planar air-core coil that has an air-core section, a printed circuit board that is disposed on a transmission side of the planar air-core coil, and a magnetic sheet that is disposed on a non-transmission side of the planar air-core coil opposite to the transmission side. The planar air-core coil includes a lead line connected to an inner end of the planar air-core coil over the transmission side, and the printed circuit board includes a receiving section that receives the lead line. | 08-21-2008 |
20090015362 | COIL UNIT AND ELECTRONIC INSTRUMENT - A coil unit includes a planar coil, a coil-receiving housing having a depression that receives the planar coil, the planar coil being disposed in the coil-receiving housing so that a transmission side of the planar coil faces a bottom of the depression, and a substrate having a mounting surface that is provided with a mounted component and faces a non-transmission side of the planar coil, an inner end lead line and an outer end lead line of the planar coil being connected to the substrate. The substrate is secured as a lid of the coil-receiving housing on an open end side of the depression of the coil-receiving housing. | 01-15-2009 |
20090021212 | COIL UNIT AND ELECTRONIC INSTRUMENT - A coil unit includes a planar coil that has a transmission side and a non-transmission side, a magnetic sheet provided over the non-transmission side of the planar coil, and a heat sink/magnetic shield plate stacked on a side of the magnetic sheet opposite to a side that faces the planar coil, the heat sink/magnetic shield plate dissipating heat generated by the planar coil and shielding magnetism by absorbing a magnetic flux that has not been absorbed by the magnetic sheet. The heat sink/magnetic shield plate has a thickness larger than that of the magnetic sheet. | 01-22-2009 |
20090267721 | COIL UNIT AND ELECTRONIC APPARATUS USING THE SAME - A coil unit includes a coil and a magnetic substance for receiving magnetic force lines generated by the coil, the magnetic substance including a first magnetic substance having a first magnetic permeability and a second magnetic substance having a second magnetic permeability. | 10-29-2009 |
20090278523 | NON-CONTACT POWER TRANSMISSION DEVICE, POWER TRANSMISSION DEVICE AND ELECTRONIC APPARATUS USING THE SAME - A non-contact power transmission device for supplying electric power to a secondary coil from a primary coil by electromagnetically coupling the primary coil to the secondary coil, includes a temperature detection element that detects temperature and a detection section that detects rise of temperature based on a first temperature at a first clock time and a second temperature at a second clock time detected by using the temperature detection element. When a degree of the rise of temperature is greater than a reference value, the non-contact power transmission device stops supplying of the electric power from the primary coil. | 11-12-2009 |
20090278651 | COIL UNIT AND ELECTRONIC APPARATUS USING THE SAME - A coil unit includes a coil including a coil wire, a magnetic substance for receiving magnetic force lines generated by the coil, a first substrate, and a temperature detection element disposed on the first substrate. | 11-12-2009 |
20090278666 | POWER RECEPTION DEVICE, ELECTRONIC APPARATUS, AND NON-CONTACT POWER TRANSMISSION SYSTEM - A power reception device includes a first resistance element having one end electrically connected to one end of a secondary coil which is able to be electromagnetically coupled to a primary coil of a power transmission devices a second resistance element having one end electrically connected to the other end of the first resistance element and having the other end supplied with a reference voltage, a power reception control device that obtains a frequency of an alternating current (AC) voltage induced on the secondary coil based on a voltage division signal output from the other end of the first resistance element and varies a magnitude of a load of the power reception device in accordance with the frequency, and a variable resistance element that has resistance varied in accordance with temperature and is connected to the first resistance element or the second resistance element in parallel. | 11-12-2009 |
20090284341 | COIL UNIT AND ELECTRONIC APPARATUS USING THE SAME - A coil unit includes a coil formed by winding a coil wire, a wiring substrate, and a magnetic substance for receiving magnetic lines of force generated by the coil. The wiring substrate includes a connection terminal connected to both ends of the coil, an external connection terminal, and a wiring pattern for connecting the connection terminal and the external connection terminal. No circuit element other than the coil is mounted on the wiring substrate. | 11-19-2009 |
20100253153 | COIL UNIT AND ELECTRONIC INSTRUMENT - To provide coil units, electronic instruments and the like, which can radiate heat generated in a coil into a space outside a protective member, while the number of components does not increase. | 10-07-2010 |