Abstract: The present disclosure provides a semiconductor structure with having a source/drain feature with a central cavity, and a source/drain contact feature formed in central cavity of the source/drain region, wherein the source/drain contact feature is nearly wrapped around by the source/drain region. The source/drain contact feature may extend to a lower most of a plurality semiconductor layers.

Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly, a driving assembly and a stopping assembly. The fixed assembly has a main axis. The movable assembly is configured to connect an optical element, and the movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. The stopping assembly is configured to limit the movement of the movable assembly relative to the fixed assembly within a range of motion.

Abstract: The present invention relates to a pen type step calculating device that uses vertical vectors with assistance of horizontal vectors of a sensing microswitch. The detection of the sensing microswitch achieves a sampling effect. The successive digital signals of the OFF/ON status are in turn accumulated by the calculator, and are then indicated on the LCD display board through an I/O circuit, thereby completely excluding possibility of calculating the values erroneously, and thereby efficiently enhancing the utility of the pen type step calculating device.

Abstract: A minitype alcohol excessive warning device includes a detecting circuit consisting of a power circuit, a delay circuit, and a sensing circuit. The detecting circuit is mounted in a housing having a simple structure, thereby constructing a miniature alcohol excessive warning device. In such a manner, the minitype alcohol excessive warning device has a low cost, can be used easily and conveniently, and is portable.