摘要:
Provided are a wireless power transmission receiver and a system including the same, particularly to a receiver and transmitter transmitting power from one transmitter to a plurality of receivers at the same time by wireless. According to the present invention, the wireless power receiver comprises a receiving coil unit receiving power from a transmitter by a resonance coupling method; and a power receiving unit receiving power from the receiving coil unit to provide the power to a load resistor, wherein an input impedance of the power receiving unit is adjusted according to power consumed by a plurality of receivers. Therefore, power transmission efficiency of the wireless power receiver and transmitter can be improved.
摘要:
Disclosed is a wireless power transmitting and receiving device which includes a wireless power receiving device comprising a receiving coil configured to receive a non-radiated electromagnetic wave; and a frequency adjusting unit configured to adjust a resonant frequency of the receiving coil and a wireless power transmitting device comprising a transmission coil configured to generate a non-radiated electromagnetic wave by magnetic induction with a power coil; and a frequency adjusting unit configured to adjust a resonant frequency of the transmission coil. The frequency adjusting unit adjusts a resonant frequency of the receiving coil by closing a surroundings of the receiving coil by a magnetic sheet. The frequency adjusting unit adjusts a resonant frequency of the transmission coil by inserting a magnetic sheet in the transmission coil.
摘要:
A power transmitter includes a signal processor that externally obtains a reception power state signal depending on variation of a distance between transmission and reception coil units, a modulation controller configured to a modulation frequency for selecting a frequency band having maximum power transmission performance, based on the reception power state signal, a power signal generator that generates a power signal, and a modulator that modulates the power signal in response to the modulation frequency, the reception coil unit being configured to transmit the modulated signal. A power receiver includes a reception coil unit that receives a power signal, a power generator that generates power by receiving the power signal from the reception coil unit, and a signal generator that generates a reception power state signal depending on the generated power level and transmits the latter signal to a transmission coil unit corresponding to the reception coil unit.
摘要:
Disclosed is a wireless power transferring device which includes a power generating unit configured to generate a power using a solar battery; a power charging unit including a super capacitor or a battery and configured to charge the generated power to retain a power; and a transmission unit configured to convert the power of the charging unit into a high frequency to send the high frequency wirelessly.
摘要:
Provided is a wireless power transfer device. The wireless power transfer device includes an power generator, and two or more non-radiative electromagnetic wave generators. The power generator generates AC type of power. The non-radiative electromagnetic wave generators receive the power, and generate non-radiative electromagnetic waves through resonance. The non-radiative electromagnetic wave generators are disposed to form a wireless power transfer-enabled transfer area.
摘要:
Provided are a wireless power transmission device and wireless power reception device. A power-relaying resonant coil is disposed between a power transmitter and a power receiver to increase transmission efficiency and lengthen a transmission distance. The wireless power transmission device includes a power generation module for generating power, a power coil for receiving the power, a transmitting coil for resonating at the unique resonant frequency due to magnetic induction with the power coil and generating a non-radiative electromagnetic wave, and one or more power relay coils for relaying the non-radiative electromagnetic wave.
摘要:
An adhesive film and a method of fabricating a flexible display using the same are provided. The adhesive film includes: a support including a first surface disposed opposite to a flexible substrate for forming an image display element and a second surface disposed opposite to a support substrate for supporting the flexible substrate; a first adhesive material applied on the first surface of the support; and a second adhesive material applied on the second surface of the support and having a greater adhesive strength than the first adhesive material. The flexible substrate can be easily detached from the support substrate, so that the flexible display can be realized in various sizes and thicknesses using existing equipment without modification of mass-production equipment for realizing the flexible display.
摘要:
A method of manufacturing a flexible substrate is provided. The method includes coating a precursor including an inorganic polymer on the flexible substrate, curing the precursor including the inorganic polymer, and oxidizing a surface of the cured precursor including the inorganic polymer to form an oxide layer. Accordingly, an organic/inorganic barrier layer may be formed by only one coating process of a thin film. In this case, oxygen plasma or infrared ray/ozone processing may be performed at atmospheric pressure, thereby reducing process costs and equipment costs by not using vacuum equipment.
摘要:
Provided is an apparatus for driving an artificial retina using a medium-range power transmission technique. The apparatus can wirelessly transmit power to an artificial retina circuit within a medium range of about 1 m using resonance between a first coil equipped around a user's waist and a second coil implanted in a user's eye. Thus, it is possible to solve the difficulty of implanting a coil in a lens, provide convenience to a user by eliminating the necessity of artificial glasses, and stably supply power to the artificial retina circuit. In addition, it is possible to remarkably lessen the difficulty in connecting the second coil with the artificial retina circuit in an eye.
摘要:
Provided is an insulating layer in which an inorganic material is added to an organic polymer to thereby improve the insulating properties, an organic thin film transistor using the insulating layer, and a method of fabricating the organic thin film transistor. An insulating layer for an organic thin film transistor including a vinyl polymer and an inorganic material is provided. Here, a weight ratio of the vinyl polymer to the inorganic material may be in the range of 1:0.0001 to 1:0.5. Accordingly, it is possible to fabricate a thin film at low temperature and, further, to fabricate an insulating layer having a high-dielectric constant, not affecting other layers formed in the previous processes during the formation of the insulating layer.