Browsing by Author "Lo, Chun-Hsiang"

Now showing 1 - 2 of 2

A polarizer-free flexible display using dye-doped liquid-crystal gels
(2009-10-01)
Lin, Yi-Hsin
;
Yang, Chih-Ming
;
Lo, Chun-Hsiang
;
Chen, Hung-Shan
;
Wu, Yung-Hsun
A reflective-type polarizer-free flexible display using a dye-doped liquid-crystal (LC) gels is demonstrated. Compared to the conventional guest-host LC mode, it has high contrast ratio and brightness due to the combining of both scattering and absorption. Such a gel-like flexible display is bendable and trimable. In this paper, a three-step switch using distinct dye-doped LC gels is also demonstrated. The potential applications are e-paper and decorative displays.
Polarizer-Free Gradient Dye-Doped Liquid Crystal Gels
(2009)
Lin, Yi-Hsin
;
Yang, Chih-Ming
;
Lo, Chun-Hsiang
;
Lin, Yan-Rung
;
Jeng, Shie-Chang
A multi-switch display using gradient dye-doped LC gels which is still polarizer-free, fast response (similar to 10ms in general), and high contrast (similar to 200:1 in general) has demonstrated. By controlling the spatial distribution of the density of polymer networks through fabrication process, gradient dye-doped LC gels can be a multi-switch. The gradient dye-doped LC gel is bright without applied voltage and is dark at a high voltage. It appears the colored pattern when LCs are partially reoriented due to the gradient density of polymer networks. The optical analysis of dye-doped LC gels is also discussed. The potential applications are flexible display and decorative displays.