Invention Grant
- Patent Title: Piezoelectric array elements for sound reconstruction with a digital input
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Application No.: US16400776Application Date: 2019-05-01
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Publication No.: US10575075B2Publication Date: 2020-02-25
- Inventor: Armando Arpys Arevalo Carreno , David Conchouso Gonzalez , David Castro Signoret , Ian G. Foulds
- Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Applicant Address: SA Thuwal
- Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Current Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Current Assignee Address: SA Thuwal
- Agency: Patent Portfolio Builders PLLC
- Main IPC: H04R1/00
- IPC: H04R1/00 ; H04R31/00 ; H04R1/02 ; H04R17/00

Abstract:
Various examples are provided for digital sound reconstruction using piezoelectric array elements. In one example, a digital loudspeaker includes a fixed frame and an array of transducers disposed on the fixed frame. Individual transducers of the array of transducers can include a flexible membrane disposed on a piezoelectric actuation element positioned over a corresponding opening that extends through the fixed frame. In another example, a method includes forming a flexible membrane structure on a substrate and backetching the substrate opposite the flexible membrane structure. The flexible membrane structure can be formed by disposing a first electrode layer on a substrate, disposing a piezoelectric layer on the first electrode layer and disposing a second electrode layer on the piezoelectric layer. A flexible membrane layer (e.g., polyimide) can be disposed on the second electrode layer.
Public/Granted literature
- US20190261074A1 PIEZOELECTRIC ARRAY ELEMENTS FOR SOUND RECONSTRUCTION WITH A DIGITAL INPUT Public/Granted day:2019-08-22
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