Abstract: A package structure including a redistribution circuit structure, a wiring substrate, first conductive terminals, an insulating encapsulation, and a semiconductor device is provided. The redistribution circuit structure includes stacked dielectric layers, redistribution wirings and first conductive pads. The first conductive pads are disposed on a surface of an outermost dielectric layer among the stacked dielectric layers, the first conductive pads are electrically connected to outermost redistribution pads among the redistribution wirings by via openings of the outermost dielectric layer, and a first lateral dimension of the via openings is greater than a half of a second lateral dimension of the outermost redistribution pads. The wiring substrate includes second conductive pads. The first conductive terminals are disposed between the first conductive pads and the second conductive pads. The insulating encapsulation is disposed on the surface of the redistribution circuit structure.

Abstract: A radar system includes an ultrasonic radar unit and a warning device. The ultrasonic radar unit is configured to be detachably mounted on a vehicle, and is configured to output a pairing signal when a pairing function is activated and output a warning signal upon detecting an object that is within a range. The warning device is configured to be electrically connected to the ultrasonic radar unit and to be mounted inside the vehicle. The warning device is configured to wirelessly communicate with the ultrasonic radar unit to receive the warning signal and the pairing signal; when receiving the pairing signal, couple the ultrasonic radar unit to one of a plurality of warning areas that is on the warning device according to the pairing signal; control one of the warning areas that is coupled to the ultrasonic radar unit to output a visual warning upon receiving the warning signal.

Abstract: A pillow is constructed to include a hollow body of sponge, the pillow body having an open chamber longitudinally extended through two opposite vertical lateral sides thereof, and a support of foamed plastics inserted into the open chamber of the pillow body and detachably secured thereto by tie cords for supporting the pressure of the head resting on the pillow body. The front side of the pillow body is curved outwards, when put under the user's head, forming a smoothly arched protruding supporting portion that supports the user's neck.