Abstract: A semiconductor device includes a first dielectric layer, a stack of semiconductor layers disposed over the first dielectric layer, a gate structure wrapping around each of the semiconductor layers and extending lengthwise along a direction, and a dielectric fin structure and an isolation structure disposed on opposite sides of the stack of semiconductor layers and embedded in the gate structure. The dielectric fin structure has a first width along the direction smaller than a second width of the isolation structure along the direction. The isolation structure includes a second dielectric layer extending through the gate structure and the first dielectric layer, and a third dielectric layer extending through the first dielectric layer and disposed on a bottom surface of the gate structure and a sidewall of the first dielectric layer.

Abstract: A handheld mobile communication apparatus and operating method thereof are disclosed. The handheld mobile communication apparatus includes a touch sensing component, a key, a storage unit and a control unit. The touch sensing component senses a touch, thus generating a touch signal. The storage unit has a first command database and a second command database. The control unit selects the first command database or the second command database according to whether the key is pressed, and generates a control signal corresponding to the touch according to the touch signal and the selected command database.