Electronic devices including substrate mounted acoustic actuators and related methods and mobile radiotelephones

A method of assembling an electronic device, the method comprising:

• providing a substrate having a major surface and having an acoustic actuator mounted on the major surface of the substrate wherein the acoustic actuator is configured to generate displacements along a direction parallel with respect to the major surface of the substrate in response to an electrical signal applied thereto;
• after providing the substrate having the acoustic actuator mounted thereon, positioning the substrate adjacent to a speaker membrane;
• after positioning the substrate adjacent to the speaker membrane, bonding the acoustic actuator to the speaker membrane so that the speaker membrane is mechanically coupled to the acoustic actuator and so that the speaker membrane is configured to deflect responsive to displacements generated by the acoustic actuator, wherein the major surface of the substrate and the speaker membrane are non-parallel;
• providing a speaker box defining an acoustic volume wherein the speaker box includes a speaker box wall having an opening therethrough;
• before positioning the substrate adjacent to the speaker membrane, providing the speaker membrane across the opening through the speaker box wall, wherein the speaker box wall is a first speaker box wall;
• providing an antenna that extends along a second speaker box wall of the speaker box spaced apart from the first speaker box wall so that the acoustic volume is defined between the first and second speaker box walls and so that the acoustic volume is between portions of the antenna and the acoustic actuator.

A mobile radiotelephone comprising:

• a printed circuit board having a major surface;
• an acoustic actuator mounted on the major surface of the printed circuit board wherein the acoustic actuator is configured to generate displacements along a direction parallel with respect to the major surface of the substrate in response to an electrical signal applied thereto;
• a speaker box including first and second spaced apart speaker box walls defining an acoustic volume therebetween, and wherein the first speaker box wall has a speaker box opening therethrough adjacent the acoustic actuator;
• a speaker membrane across the speaker box opening adjacent the acoustic actuator, wherein the speaker membrane is mechanically coupled to the acoustic actuator so that the speaker membrane is configured to deflect responsive to displacements generated by the acoustic actuator, wherein the major surface of the substrate and the speaker membrane are non-parallel;
• a wireless transceiver electrically coupled to the printed circuit board wherein the wireless transceiver is configured to transmit and receive wireless communications to and from a remote electronic device;
• a controller electrically coupled to the wireless transceiver wherein the controller is configured to process the communications transmitted to and/or received from the remote electronic device;
• and
• an antenna electrically coupled to the wireless transceiver, wherein the antenna extends along the second speaker box wall so that the acoustic volume is between portions of the antenna and the acoustic actuator.