Three-Dimensional virtual touch display system for multi-User applications

Yi-Pai Huang, Guo Zhen Wang, Tian-Sheuan Chang, Tsu Han Chen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


By embedding optical sensors onto a TFT substrate in a display, a flat panel can sense images projected by infrared (IR) light. Light pens which can project Multi-T-mark including out-mark and in-mark of IR images were utilized to calculate the 3-axis information x, y, and z) of the tip of the light-pen and achieve accurate user identification accordingly. Therefore, a 3-dimensional virtual touch display for 3-axis information with multi-user/multi-touch system can be achieved.

Original languageEnglish
Article number6555817
Pages (from-to)921-928
Number of pages8
JournalIEEE/OSA Journal of Display Technology
Issue number11
StatePublished - 2 Dec 2013


  • Embedded optical sensors
  • Multi-marks
  • Three-dimensional (3D) virtual touch

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