Patent ID: 7677706

Claim:
A fluid drop ejector, comprising: a first structure including a first conductor formed over a first non-silicon substrate; a second structure affixed to the first structure, the second structure including: a fluid channel formed in a second non-silicon substrate, the fluid channel aligned with the first conductor; and a conductive membrane formed over the second non-silicon substrate, the conductive membrane aligned with and forming a wall of the fluid channel at a location between the fluid channel and the first conductor; a spacer between the first conductor and the conductive membrane, the spacer having openings therein defining a gap between the first conductor and the conductive membrane; a third structure affixed to the second structure, the third structure covering the fluid channel to form a fluid chamber bounded by a conductive membrane, the second non-silicon substrate and the third structure; and an orifice in the chamber through which fluid may be ejected from the chamber.