A 2-Axis Scanning Comb-Drive Micromirror with Polymer-Filled Isolation Trenches

Yingchao Cao, Yingtao Ding, Yangyang Yan, Huikai Xie*

*Corresponding author for this work

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

Abstract

In this work, silicon trenches filled with polymer are incorporated to provide the electrical isolation of silicon needed in two-axis scanning electrostatic comb-drive micromirrors. This polymer-filled trench isolation method overcomes such issues as high processing temperature, uneven surface, and high stresses, encountered by the commonly used polysilicon-filled isolation. In particular, Benzocyclobutene (BCB) is employed and it can fill deep silicon trenches. Experimental results show that the fabricated 2-axis mirrors can achieve a large field of view of 30°×20° and stand high impact over 2500 g.

Original languageEnglish
Title of host publication2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1437-1440
Number of pages4
ISBN (Electronic)9784886864352
Publication statusPublished - 2023
Event22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023 - Kyoto, Japan
Duration: 25 Jun 202329 Jun 2023

Publication series

Name2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023

Conference

Conference22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023
Country/TerritoryJapan
CityKyoto
Period25/06/2329/06/23

Keywords

  • Comb-drive
  • Electrical isolation of silicon
  • Micromirror
  • Polymer-filled trench

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