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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 4 — Feb. 25, 2013
  • pp: 4734–4739

Plastic optical touch panels for large-scale flexible display

Beom-Jun Cheon, Jun-Whee Kim, and Min-Cheol Oh  »View Author Affiliations


Optics Express, Vol. 21, Issue 4, pp. 4734-4739 (2013)
http://dx.doi.org/10.1364/OE.21.004734


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Abstract

A plastic optical touch panel applicable for large-scale flexible display is demonstrated based on a vertical directional coupling between arrayed channel waveguides and a flexible planar waveguide. When a contact force is applied to the surface, the flexible planar waveguide is bent toward the channel waveguide, and then, the guided mode in the channel waveguide is coupled into the flexible planar waveguide, causing an output power drop. An index-matching liquid is used to fill the gap between the channel and the flexible planar waveguide in order to enhance the transparency of the waveguide touch panel. By applying a force of 1.0 N, the output intensity is decreased by 17 dB, which is sufficiently large for producing a contact signal.

© 2013 OSA

OCIS Codes
(250.5460) Optoelectronics : Polymer waveguides
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(120.5475) Instrumentation, measurement, and metrology : Pressure measurement

ToC Category:
Sensors

History
Original Manuscript: December 13, 2012
Revised Manuscript: February 14, 2013
Manuscript Accepted: February 14, 2013
Published: February 19, 2013

Citation
Beom-Jun Cheon, Jun-Whee Kim, and Min-Cheol Oh, "Plastic optical touch panels for large-scale flexible display," Opt. Express 21, 4734-4739 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-4-4734


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References

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