Share Email Print
cover

Proceedings Paper

Transparent image generator by using vertically aligned polymer-stabilized liquid crystal (VA-PSLC) for see-through display applications
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We demonstrate the feasibility of using a Vertically-Aligned Polymer-Stabilized Liquid Crystal (VA-PSLC) film, which is also known as LC gel, as a transparent image generator to form a see-through display system. This is achieved, in its simplest form, by projecting a collimated LED light source onto a transparent glass screen, with the image generated by the scattered light from the VA-PSLC. By moving the observer’s head slightly away from the incident light specular reflection direction, a clear image can be observed on the transparent glass screen together with the background objects that are behind the screen. From our experimental results, this see-through display system using VA-PSLC transparent image generator can achieve a fast response time (with rise time of ~10 ms and fall time of ~5ms) and an acceptable contrast ratio (< ~100:1). The driving voltage is about 15~20V. Further improvements can be achieved by further optimizing the LC material/monomer parameters, device fabrication process/conditions and the optical system setup. In this system, polarizers are not required so that very high light efficiency can be obtained.

Paper Details

Date Published: 15 October 2012
PDF: 7 pages
Proc. SPIE 8484, Twelfth International Conference on Solid State Lighting and Fourth International Conference on White LEDs and Solid State Lighting, 848414 (15 October 2012); doi: 10.1117/12.930935
Show Author Affiliations
Mu-Hao Wang, National Taiwan Univ. (Taiwan)
Wing-Kit Choi, National Taiwan Univ. (Taiwan)
Guo-Dung Su, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 8484:
Twelfth International Conference on Solid State Lighting and Fourth International Conference on White LEDs and Solid State Lighting
Matthew H. Kane; Christian Wetzel; Jian-Jang Huang; Ian T. Ferguson, Editor(s)

© SPIE. Terms of Use
Back to Top