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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 14 — Jul. 4, 2011
  • pp: 13097–13104

Bright color optical switching device by polymer network liquid crystal with a specular reflector

Gae Hwang Lee, Kyu Young Hwang, Jae Eun Jang, Yong Wan Jin, Sang Yoon Lee, and Jae Eun Jung  »View Author Affiliations

Optics Express, Vol. 19, Issue 14, pp. 13097-13104 (2011)

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The color optical switching device by polymer network liquid crystal (PNLC) with color filter on a specular reflector shows excellent performance; white reflectance of 22%, color gamut of 32%, and contrast ratio up to 50:1 in reflective mode measurement. The view-angle dependence of the reflectance can be adjusted by changing the PNLC thickness. The color chromaticity shown by the device is close to the limit value of color filters, and its value nearly remains with respect to the operating voltage. These optical properties of the device can be explained from the prediction based on multiple interactions between the light and the droplets of liquid crystal. The high reflectance, vivid color image, and moderate responds time allow the PNLC device to drive good color moving image. It can widely extend the applications of the reflective device.

© 2011 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(220.0220) Optical design and fabrication : Optical design and fabrication
(290.4210) Scattering : Multiple scattering
(130.4815) Integrated optics : Optical switching devices

ToC Category:
Optical Devices

Original Manuscript: March 14, 2011
Revised Manuscript: June 9, 2011
Manuscript Accepted: June 12, 2011
Published: June 22, 2011

Gae Hwang Lee, Kyu Young Hwang, Jae Eun Jang, Yong Wan Jin, Sang Yoon Lee, and Jae Eun Jung, "Bright color optical switching device by polymer network liquid crystal with a specular reflector," Opt. Express 19, 13097-13104 (2011)

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