Abstract: A method of transmitting power by a wireless power transmitter, the method including receiving a plurality of packets including a foreign object detection (FOD) status packet from a wireless power receiver; determining whether a foreign object is present in a charging area of the wireless power transmitter on the basis of the FOD status packet; and transmitting, to the wireless power receiver, a response signal indicating whether the foreign object is present in the charging area of the wireless power transmitter on the basis of a result of the determination, wherein the response signal is determined using a measured peak frequency of a power signal transmitted by the wireless power transmitter and a reference peak frequency included in the FOD status packet received from the wireless power receiver, wherein each of the plurality of packets includes a preamble, a header, a message, and a checksum for identifying whether an error occurs in each packet, and wherein the header is configured to identify a type of

Abstract: A wireless power transmitter for transmitting power to a wireless power receiver, including a controller configured to determine whether a foreign object is present; and a transmission part configured to transmit wireless power according to whether the foreign object is present, wherein the controller receives a foreign object detection status packet including at least one of a reference quality factor and a reference peak frequency from the wireless power receiver, and detects whether the foreign object is present based on the foreign object detection status packet, wherein the controller transmits a NAK response indicating that the foreign object is present or an ACK response indicating that the foreign object is not present to the wireless power receiver, and wherein the transmission part transmits a first power to the wireless power receiver according to the transmitted NAK response or transmits a second power greater than the first power to the wireless power receiver according to the transmitted ACK res

Abstract: A wireless power receiver of receiving power from a wireless power transmitter, including a receiving part configured to receive a wireless power from the wireless power transmitter; and a main controller configured to generate a signal including an FOD status packet, wherein the main controller transmits a signal including the FOD status packet to the wireless power transmitter; wherein the main controller receives a first power from the wireless power transmitter when a NAK response indicating that a foreign object is present in a charging area of the wireless power transmitter is received from the wireless power transmitter, or receives a second power from the wireless power transmitter when an ACK response indicating that the foreign object is not present in the charging area of the wireless power transmitter is received from the wireless power transmitter, in response to the FOD status packet; wherein the main controller transmits a reception power packet including information on reception power intensit

Abstract: A method of transmitting power of a wireless power transmitter, including a phase of transmitting a detection signal to a wireless power receiver through a transmission coil to detect that the wireless power receiver is present; a phase of identifying a transmission coil that has received a signal strength indicator transmitted from the wireless power receiver in response to the detection signal; a phase of selecting the transmission coil that has received the signal strength indicator as a power transmission coil; a phase of receiving an FOD status packet from a wireless power receiver; a first determination phase of determining whether a foreign object is present in a charging area of the wireless power transmitter based on the FOD status packet; and a power control phase of controlling power transmission in a first power transfer mode when it is determined in the first determination phase that the foreign object is present in the charging area, or controlling the power transmission in a second power transf

Abstract: A method of receiving power of a wireless power receiver, including a signal transmission phase of transmitting a signal including an FOD status packet to a wireless power transmitter; a power reception phase of receiving a first power from the wireless power transmitter when a NAK response indicating that a foreign object is present in the charging area of the wireless power transmitter is received from the wireless power transmitter, or receiving a second power from the wireless power transmitter when an ACK response indicating that the foreign object is not present in the charging area of the wireless power transmitter is received from the wireless power transmitter, in response to the FOD status packet; a phase of transmitting a reception power packet including information on reception power intensity to the wireless power transmitter; and a phase of receiving a signal including information on a result of determining whether the foreign object is present in the charging area from the wireless power transm

Abstract: A method of receiving power by a wireless power receiver, the method including transmitting, to a wireless power transmitter, a plurality of packets including a foreign object detection (FOD) status packet; and receiving, from the wireless power transmitter, a response signal indicating whether a foreign object is present in a charging area of the wireless power transmitter, wherein the response signal is determined using a measured peak frequency of a power signal transmitted by the wireless power transmitter and a reference peak frequency included in the FOD status packet received from the wireless power receiver, wherein each of the plurality of packets includes a preamble, a header, a message, and a checksum for identifying whether an error occurs in each packet, and wherein the header is configured to identify a type of the each packet.

Abstract: A semiconductor device has a substrate and a first insulating layer formed over a first major surface of the substrate. A first redistribution layer is formed over the first insulating layer. A second insulating layer is formed over the first redistribution layer. A second redistribution layer can be formed over the second insulating layer, and a third insulating layer can be formed over the second redistribution layer. A protection layer is formed over a second major surface of the substrate for warpage control. A conductive layer is formed over the first redistribution layer, and a bump is formed over the conductive layer. An under bump metallization can be formed under the bump. The protection layer extends over a side surface of the substrate between the first major surface and second major surface. The protection layer further extends over a side surface of the first insulating layer.

Abstract: An electromagnetic induction heating apparatus for heating an aerosol-forming article of an electronic cigarette includes: a power supply unit configured to supply DC power; a power amplifier including a switch unit composed of a pair of transistor switches having a differential structure and operating by receiving the DC power from the power supply unit, and a LC resonant network composed of a resonant inductor connected to an output terminal of the switch unit and electromagnetically inductively coupled with an inductor component of a heat-generating body for heating the aerosol-forming article of the electronic cigarette and a resonant capacitor connected in parallel to the resonant inductor; and a driving unit configured to adjust an operation of the power amplifier to adjust a temperature of the heat-generating body.

Abstract: An air guide apparatus for a vehicle includes a front wheel housing at least partially surrounding a front wheel, and having an air outlet which is open to the front wheel, a first vane assembly including a plurality of first vanes which are tiltable in a position adjacent to the air outlet, and a first driving mechanism by which the plurality of first vanes are driven, and a second vane assembly including a plurality of second vanes which are tiltable in a position adjacent to the plurality of first vanes, and a second driving mechanism by which the plurality of second vanes are driven.

Abstract: A method for detecting a foreign object disposed in a charging area of a wireless power transmitter, the method including transmitting, by a wireless power receiver to the wireless power transmitter, a foreign object detection status packet including a mode bit field indicating whether the foreign object detection status packet includes a reference peak frequency of the wireless power receiver; and receiving, by the wireless power receiver from the wireless power transmitter, a response indicating the foreign object is present or not present in the charging area, wherein a data packet is used for information exchange between the wireless power transmitter and the wireless power receiver, wherein the reference peak frequency is preassigned to the wireless power receiver, wherein the response is determined based on a comparison of a measured peak frequency of a power signal transmitted by the wireless power transmitter and an adaptable threshold frequency adapted based on the reference peak frequency included i

Abstract: Reliable plasma dicing of a processed wafer with a die attach film (DAF) attached to the bottom wafer surface to singulate it into individual dies is disclosed. Laser processing is employed to form mask openings in a passivation stack of a processed wafer to serve as a dicing mask. Laser processing is employed to form a modified layer with cracks on a bottom portion of the wafer. Plasma dicing partially dices the processed wafer to about the modified layer. The dicing tape is expanded laterally away from the center of the partially diced processed wafer, singulating it into individual dies. Singulation of the partially plasma diced processed wafer is facilitated by the modified layer.

Abstract: A semiconductor device has a substrate and a semiconductor die disposed over the substrate. An encapsulant is deposited over the semiconductor die and substrate with a surface of the semiconductor die exposed from the encapsulant. A first shielding layer is formed over the semiconductor die. In some embodiments, the first shielding layer includes a stainless steel layer in contact with the surface of the semiconductor die and a copper layer formed over the stainless steel layer. The first shielding layer may further include a protective layer formed over the copper layer. One embodiment has a heatsink bonded to the semiconductor die through a solder layer. A second shielding layer can be formed over a side surface of the semiconductor die.

Abstract: As a technology capable of improving the durability of an electroluminescent device, for example, luminescence lifespan, a polymeric compound including a structural unit represented by Chemical Formula 1, or a structural unit represented by Chemical Formula 1 and a structural unit represented by Chemical Formula 2, and an electroluminescent device material or electroluminescent device including the same are provided: In Chemical Formula 1 and Chemical Formula 2, R11 to R14 are not the same as R41 to R44.

Abstract: A polymer including a structural unit represented by Chemical Formula 1, an electroluminescence device material including the polymer, an electroluminescence device including the polymer or the electroluminescence device material, and an electronic device including the electroluminescence device are provided: In Chemical Formula 1, the definition of each substituent is the same as described in the specification.

Abstract: A method of controlling a wireless power transmitter to detect a foreign object can include in response to a wireless power receiver being placed in a charging area of the wireless power transmitter, determining a current peak frequency; collecting a communication error count related to communication between the wireless power transmitter and the wireless power receiver; determining a reference frequency for detecting the foreign object based on a reference peak frequency received from the wireless power receiver; and determining that the foreign object is present within the charging area based on the current peak frequency, the communication error count and the reference frequency.

Abstract: An exemplary embodiment relates to improving a driving speed of a shape-memory-alloy applied as an artificial muscle, and to improving heat conduction and thermal convection by growing copper nanowires on the surface of the shape-memory-alloy to improve a natural cooling rate and a driving speed of the shape-memory-alloy.

Abstract: The present invention relates to an apparatus and method for forming a silicon nitride film by performing plasma enhanced atomic layer deposition (PE-ALD) employing very high frequency (VHF). An atomic layer deposition apparatus according to an embodiment of the present invention may comprise: a chamber providing a space in which a process is performed; a substrate support unit for supporting a substrate in the chamber; a gas supply unit for supplying gas to the chamber; an exhaust unit for discharging gas in the chamber; a plasma generation unit installed in the chamber to generate plasma in the chamber; and a VHF (very high frequency) power source for applying a VHF band signal to the plasma generation unit.

Abstract: A method of controlling a power transmitter, the method including entering a negation phase with a power receiver including receiving a foreign object detection status packet from the power receiver, detecting whether a foreign object is present based on the foreign object detection status packet, and transmitting a NACK response to the power receiver indicating the power transmitter has detected the foreign object is present or transmitting an ACK response to the power receiver indicating the power transmitter has detected the foreign object is not present; and entering a power transfer phase including transmitting a first power to the power receiver in response to the transmitted NACK response and again detecting whether the foreign object is present while transmitting the first power, and transmitting a second power greater than the first power in response to the transmitted ACK response.

Abstract: The present disclosure relates to a surface heating heater pipe and an aerosol generating device including the same, and more particularly, to a surface heating heater pipe having improved performance by implementing a surface heating structure using graphene and an aerosol generating device including the same. A heater pipe for an aerosol generating device for transferring heat to an aerosol-forming article includes a body formed of metal and having a shape of a pipe having a space for accommodating the aerosol-forming article, a first insulating layer formed on an outer surface of the body, a graphene layer formed on the first insulating layer by deposition, and a second insulating layer formed on the graphene layer.