Patent ID: 11873215
Assignee: STMICROELECTRONICS S.R.L.
Field: Micro-structural and nano-technology (Chemistry)
Classification: CPC B | IPC B

Claim 12:
13. A method, comprising steps of:
forming a plurality of MEMS devices by:
arranging a plurality of MEMS structures on a first surface of a substrate, the substrate having a plurality of conductive tracks, the plurality of MEMS structures each including an application specific integrated circuit (ASIC) coupled to ones of the plurality of conductive tracks of the substrate and a MEMS sensor coupled to the ASIC;
next, placing the substrate into a molding chamber;
next, covering the plurality of MEMS structures with a plurality of resin coating regions, respectively, using a plurality of first molds, the plurality of resin coating regions having a first Young's modulus, the plurality of first molds being spaced from each other by exposed portions of the substrate;
next, completely covering the plurality of resin coating regions with a rubber coating mass using a second mold and forming a packaged wafer, wherein the rubber coating mass has a second Young's modulus lower than the first Young's modulus; and
dicing the packaged wafer through the substrate and the rubber coating mass in direct contact with the substrate, each MEMS devices of the plurality of MEMS devices has a respective resin coating region of the plurality of resin coating regions covered completely by the rubber coating mass.