Patent ID: 9271087
Filing Date: 2016-02-23
CPC Classification: H04R

Claim Text:
1. A micro-electromechanical systems (MEMS) microphone package device, comprising: a silicon MEMS microphone chip, wherein the silicon MEMS microphone chip is an integrated circuit chip and an acoustic sensing structure embedded in the integrated circuit chip, wherein the silicon MEMS microphone chip has a first surface and a second surface, wherein an integrated circuit and one side of an acoustic sensing structure of the silicon MEMS microphone chip are exposed at the first surface, wherein acoustic signals are received by the acoustic sensing structure and transferred to electrical signals via the integrated circuit, wherein a cavity is formed at the second surface of the silicon MEMS microphone chip to expose the other side of the acoustic sensing structure on the second surface of the silicon MEMS microphone chip; a substrate, having an interconnection structure in the substrate; an adhesive structure, adhering on an outer sidewall of the silicon MEMS microphone chip, wherein a bottom portion of the adhesive structure protrudes out from the first surface of the silicon MEMS microphone chip and adheres on a surface of the substrate to form a first seal ring, wherein a space between the acoustic sensing structure and the substrate and sealed by the first seal ring forms a second chamber; and a cover, adhering to a top portion of the adhesive structure, covering over the cavity on the second surface of the silicon MEMS microphone chip, wherein the top portion of the adhesive structure forms as a second seal ring, wherein a space between the cover and the second surface of the silicon MEMS microphone chip and sealed by the second seal ring forms a first chamber, wherein the cavity is connected to the first chamber acoustically.