Semiconductor device and method for forming the same

A semiconductor device, comprising:

• a first PMUT device;
• a second PMUT device disposed adjacent to the first PMUT device;
• a molding surrounding the first PMUT device and the second PMUT device;
• and
• an RDL over the first PMUT device, the second PMUT device and the molding, wherein the RDL
• electrically connects the first PMUT device to the second PMUT device, and
• includes a first opening exposing a first sensing area of the first PMUT device and a second opening exposing a second sensing area of the second PMUT device.

A semiconductor device, comprising:

• a first transducer device;
• a second transducer device separated from the first transducer device by a molding compound;
• and
• an RDL disposed over the first transducer device, the second transducer device and the molding compound, wherein the RDL includes:
• a first pillar electrically coupled to the first transducer device;
• a second pillar electrically coupled to the second transducer device;
• a wire electrically connecting the first pillar and the second pillar;
• and
• an isolation layer surrounding the first pillar, the second pillar and the wire.