Patent ID: 9313578
Filing Date: 2016-04-12
CPC Classification: B06B,G01H,G10K,H04R,Y10T

Claim Text:
1. A manufacturing method for a sensor device integrated with an ultrasonic transducer and a microphone, the method comprising the steps of: preparing a substrate having a first region and a second region; forming a first support structure on the first region; forming a back plate on the first support structure, wherein forming a first electrode on the electrode-forming region of the back plate and forming a second electrode on the back plate above the second region of the substrate; forming a second support structure on the back plate, wherein the second support structure has a first opening and a second opening, the first electrode and the second electrode are respectively exposed from the first opening and the second opening; forming a membrane on the back plate to cover the first opening and the second opening; and forming a third electrode and a fourth electrode on the membrane, wherein the third electrode is above the first electrode, and the fourth electrode is above the second electrode; wherein the first electrode, the third electrode, a part of the back plate, a part of the second support structure and a part of the membrane that are above the first region of the substrate collectively form the ultrasonic transducer; and wherein the first support structure, the second electrode, the fourth electrode, a part of the back plate, a part of the second support structure and a part of the membrane that are above the second region of the substrate collectively form the microphone.