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: A method and an apparatus may detect a rotor magnetic pole of a single-phase BLDC motor. The method and apparatus may quickly and precisely initially drive the single-phase BLDC motor by detecting a position of a magnetic pole of a rotor adjacent to a stator by applying a high frequency voltage to the single-phase BLDC motor and analyzing a magnitude of a flowing current.

Abstract: An apparatus and a method may control a compressor. The apparatus may control a motor (included in a compressor) such that the motor quickly repeats turn-on and turn-off operations in a cooling power supply time period/section, thereby enabling the compressor to compress refrigerant in the cooling power supply time period/section. Thus, cooling power of a refrigerator may change while the compressor operates with maximum efficiency.

Abstract: A method and an apparatus may detect a rotor magnetic pole of a single-phase BLDC motor. The method and apparatus may quickly and precisely initially drive the single-phase BLDC motor by detecting a position of a magnetic pole of a rotor adjacent to a stator by applying a high frequency voltage to the single-phase BLDC motor and analyzing a magnitude of a flowing current.