3D multi-touch system by using coded optical barrier on embedded photo-sensors

Hsuan He Fang, Guo Zhen Wang, Chia Wei Chang, Yi-Pai Huang

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Limited by construction complexity, bare finger touch systems are not ready to be used on mobile devices. Hence, we proposed a system using coded optical barrier with less hardware and software complexity; based on the construction, touch algorithm is programed to obtained 3D location (x,y,z) of input(s). Finally, our concept was implemented on a 4-inch panel. The system was able to sense up to 3 touch inputs simultaneously within 35 mm working range.

Original languageEnglish
Pages (from-to)1513-1516
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume44
Issue number1
DOIs
StatePublished - 1 Jan 2013

Keywords

  • 3D touch
  • bare finger
  • depth sensing
  • in-cell photo sensor
  • multi-touch
  • near-distance touch

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