Patent ID: 9319764
Filing Date: 2016-04-19
CPC Classification: B81B,H01L,H04R

Claim Text:
1. A MEMS microphone packaging structure, comprising: a base having a surface and a through hole; a MEMS microphone chip having a plurality of metal bumps, a first surface and a second surface, the MEMS microphone chip being electrically connected to the base by means of contacting the surface of the base through the metal bumps, and a deep hole being formed on the second surface of the MEMS microphone chip and extending to the first surface of the MEMS microphone chip; a controlling chip having a first surface and a second surface, the first surface of the controlling chip being fixed to and covering the deep hole of the MEMS microphone chip; a plurality of conductive wires electrically connected the second surface of the controlling chip with the base; and a sealing material covering the base, the MEMS microphone chip, the controlling chip, the conductive wires and the metal bumps arranged between the MEMS microphone chip and the base, wherein the sealing material has a first outer lateral wall, the base has a second outer lateral wall, and the first outer lateral wall trims the second outer lateral wall.