Si-based micro probe card with sharp knife-edged tips combined metal deposition

Younghak Cho, T. Kuki, Y. Fukuta, H. Fujita, B. Kim

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

3 Scopus citations

Abstract

This paper presents the micro-machined cantilever type MEMS probe card with a special shape of tips in single crystal silicon. The probe cantilevers including the sharp tip are formed with anisotropic KOH etching and LOCOS, and the tips are deposited with Cr, Au, and W. This probe can endure enough force because both of tip and cantilever are entirely fabricated by single crystal silicon, and the specific shape of sharp probe tip was fabricated to break the oxidized surface of the IC chip. This probe is also expected to have a long life-time and enough tip hardness since the end of tip is coated with hard metal of tungsten (W). A novel process for the micro machined probe card with a sharp tip formation is developed and the micro probe arrays with 40 μm in pitch are also realized.

Original languageEnglish
Title of host publicationTRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages774-777
Number of pages4
ISBN (Electronic)0780377311, 9780780377318
DOIs
StatePublished - 2003
Event12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers - Boston, United States
Duration: 8 Jun 200312 Jun 2003

Publication series

NameTRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers
Volume1

Conference

Conference12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers
Country/TerritoryUnited States
CityBoston
Period8/06/0312/06/03

Keywords

  • Anisotropic magnetoresistance
  • Chromium
  • Circuit testing
  • Etching
  • Fabrication
  • Gold
  • Micromechanical devices
  • Probes
  • Shape
  • Silicon

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