Patent ID: 9031266
Filing Date: 2015-05-12
Classification: H04R,Y10T

Abstract:
1. An electrostatic loudspeaker comprising: a membrane structure comprising a central membrane portion and a circumferential membrane portion; an electrode structure configured to electrostatically interact with the membrane structure for causing a movement of the membrane structure along an axis of movement, the electrode structure comprising a circumferential electrode portion and an opening, the circumferential electrode portion being substantially aligned to the circumferential membrane portion and the opening being substantially aligned to the central membrane portion with respect to a direction parallel to the axis of movement; and a gap between the membrane structure and the electrode structure, wherein, in an end position of the movement of the membrane structure, the central membrane portion is configured to extend at least partially through the opening, and wherein an amplitude of the central membrane portion is greater than a thickness of the gap by at least 5%.