Patent ID: 7706149
Filing Date: 2010-04-27
Classification: B81B,B81C,H01L,Y10T

Abstract:
1. A micro-electro-mechanical-system (MEMS) package comprising: a first board having an upper surface and a lower surface and comprising a first lower metallic trace, a metallic diaphragm and a first through opening, wherein the lower surface is opposite to the upper surface, the first lower metallic trace is located on the lower surface of the first board, the metallic diaphragm is disposed on the first lower metallic trace, and the first through opening is extended from the upper surface to the lower surface; a second board having an upper surface and a lower surface and comprising a second upper metallic trace and a metallic electrode, wherein the lower surface is opposite to the upper surface, the second upper metallic trace is located on the upper surface of the second board, the metallic electrode is disposed on the second upper metallic trace, and the metallic electrode is corresponding to the metallic diaphragm; a laminate material disposed between the first lower metallic trace and the second upper metallic trace, and comprising a hollow portion for accommodating the metallic diaphragm and the metallic electrode, wherein a sensing unit is formed by the metallic diaphragm, the hollow portion and the metallic electrode and is corresponding to the first through opening; a chip mounted on the upper surface of the first board and electrically connected to the metallic diaphragm and the metallic electrode; and an encapsulant adapted to seal the chip and have a second through opening, wherein the second through opening is corresponding to the first through opening.