Abstract: A semiconductor device having simplicity in design and improved performance and methods for fabricating the same are provided. The semiconductor device includes a substrate including a frontside and a backside opposite the frontside, an electronic device on the frontside of the substrate, an interlayer insulating layer covering the electronic device, a frontside wiring structure on the interlayer insulating layer, a backside wiring structure on the backside of the substrate, and at least one unit chain connecting the electronic device with the backside wiring structure, the unit chain including a through plug passing through the substrate, a connection contact on the interlayer insulating layer, a first chain plug passing through the interlayer insulating layer to connect the through plug with the connection contact, and a second chain plug passing through the interlayer insulating layer to be connected to the through plug.

Abstract: Provided is an electric waste gate actuator for a turbocharger, in which the inside of a housing is divided into an upper portion and a lower portion to thereby prevent foreign particles generated in a decelerator from being introduced into a driving motor. The electric waste gate actuator for a turbocharger includes: a housing having an installation space inside; a decelerator installed in an upper portion of the installation space; a lever coupled to an upper end of the decelerator and installed outside the installation space; a driving motor installed in a lower portion of the installation space; a blocking plate dividing the installation space into the upper portion, where the decelerator is installed, and the lower portion, where the driving motor is installed, and preventing foreign particles generated in the decelerator from being introduced into the lower portion of the installation space; and a sensor unit installed under the blocking plate to measure a rotation angle of the decelerator.

Abstract: Provided is an electrical actuator for a variable geometry turbocharger. A lever is disposed outside a housing and is connected to a bottom end of an output shaft of a deceleration device, a ground structure is installed between a printed circuit board and a housing protrusion so as to prevent an electromagnetic interference (EMI) from occurring, a part of insertion parts is inserted in and is fixed to the printed circuit board, an end of an elastic part is mounted on the housing protrusion so that the ground structure can be maintained by an elastic force.

Abstract: Provided is an electric waste gate actuator for a turbocharger, which includes a return spring for assisting a retention force of a final output gear, and a stopper for adjusting a rotation angle of the final output gear, thereby reducing an amount of a current consumed for maintaining the final output gear at a constant position. The electric waste gate actuator for a turbocharger includes: a housing having an installation space formed by a body and a cover; a driving motor installed within the installation space; a decelerator including gear trains provided with a plurality of gears, such that the decelerator is coupled to a lever installed outside the housing and transmits power of the driving motor; and an elastic member cooperating with the driving motor so as to maintain a rotation angle of a final output gear for finally transmitting power to the lever among the gear trains.

Abstract: Provided is an electric waste gate actuator for a turbocharger, in which the inside of a housing is divided into an upper portion and a lower portion to thereby prevent foreign particles generated in a decelerator from being introduced into a driving motor. The electric waste gate actuator for a turbocharger includes: a housing having an installation space inside; a decelerator installed in an upper portion of the installation space; a lever coupled to an upper end of the decelerator and installed outside the installation space; a driving motor installed in a lower portion of the installation space; a blocking plate dividing the installation space into the upper portion, where the decelerator is installed, and the lower portion, where the driving motor is installed, and preventing foreign particles generated in the decelerator from being introduced into the lower portion of the installation space; and a sensor unit installed under the blocking plate to measure a rotation angle of the decelerator.