Abstract: A semiconductor structure includes a substrate, and an active device and a passive device over the substrate. The active device is disposed in a first region of the substrate, and the passive device is disposed in a second region of the substrate. The semiconductor structure further includes a shielding structure and a passivation layer. The shielding structure includes a barrier layer and a ceiling layer. The barrier layer is on the passive device and the active device, and the ceiling layer is on the barrier layer. The passivation layer is under the barrier layer and covers a top surface of the passive device. An air cavity is defined by sidewalls of the barrier layer, a bottom surface of the ceiling layer, and the substrate.

Abstract: A combination of a radio with an earphone and a ball-point pen comprises: a lower housing in which a pen core is disposed; a hollow upper housing being provided with an upper thread hole and a lower thread hole at the upper end and the lower end thereof, and being provided with an indentation and at least one through holes at the periphery thereof; a connecting body for connecting the lower housing to the upper housing; a radio circuit having the function of receiving a signal and being disposed inside the upper housing, the circuit being provided with a switch for controlling the volume and the power source of the radio, a reset key and a channel key for adjusting the frequency, and a earphone receptacle, wherein the switch corresponds to the indentation while the reset key and the channel key correspond to the through holes, respectively; at least one battery disposed at the upper surface of the connecting body for providing the circuit with power; a cover having an earphone socket at the top portion

Abstract: A combination of a radio with an earphone and a ball-point pen comprises: a lower housing in which a pen core is disposed; a hollow upper housing being provided with an upper thread hole and a lower thread hole at the upper end and the lower end thereof, and being provided with an indentation and at least one through holes at the periphery thereof; a connecting body for connecting the lower housing to the upper housing; a radio circuit having the finction of receiving a signal and being disposed inside the upper housing, the circuit being provided with a switch for controlling the volume and the power source of the radio, a reset key and a channel key for adjusting the frequency, and a earphone receptacle, wherein the switch corresponds to the indentation while the reset key and the channel key correspond to the through holes, respectively; at least one battery disposed at the upper surface of the connecting body for providing the circuit with power; a cover having an earphone socket at the top portion thereo