Design and fabrication of wafer-level packaged MEMS Pirani gauge with sorrounded heat sinks

  • Yanmei Kong
  • , Binbin Jiao
  • , Lemin Zhang
  • , Shichang Yun
  • , Dapeng Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

14 Scopus citations

Abstract

This paper presents a wafer-level packaged MEMS (Micro-electromechanical Systems) Pirani gauge with surrounded heat sinks with improved characteristics during the low limit of the cavity vacuum. Different to the reported gauges in other papers, it has four heat sinks, and one of these is the cap of the wafer-level package. And it utilizes two heaters and two constant resistors to construct an Whetstone Bridge, two meander-shaped suspended silicon coils is set as the heaters and two isolated comb-shaped silicon structures as the dual-lateral heat sinks. In addition, the substrate and capped wafers are used as dual-vertical heat sinks. The gauge is finally realized with the volume 1.4mm×1.2mm×0.5mm using the CMOS (Complementary Metal Oxide Semiconductor)-MEMS compatible process. The gauge was measured twice before and after wafer-level packaging. It denotes that with the introduction of the capped heat sink, the device bears a better sensitivity compared to the intermediate device before packaging. With a hole on the edge of the device, the gauge could be widely and flexibly used for the characterization of vacuum packaged MEMS devices.

Original languageEnglish
Title of host publicationTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages950-953
Number of pages4
ISBN (Electronic)9781538627310
DOIs
StatePublished - 26 Jul 2017
Externally publishedYes
Event19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017 - Kaohsiung, Taiwan, Province of China
Duration: 18 Jun 201722 Jun 2017

Publication series

NameTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems

Conference

Conference19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period18/06/1722/06/17

Keywords

  • Heat Sink
  • Pirani Gauge
  • Wafer Level Package

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