Session Index

Display Technology

Display Technology III
Friday, Dec. 8, 2017  08:30-10:15
Presider: Yi-Pai Huang;Tien-Lung Chiu
Room: International Research Building IR6002-B(6F)
Notes:
08:30 - 09:00 Paper No.  2017-FRI-S0703-I001
Invited Speaker:
Hiroyuki Yoshida
Functional diffractive optical elements with liquid crystals
Hiroyuki Yoshida

Liquid crystal molecules in standard devices are uniformly oriented over a relatively large area. However, there is recently increased interest in liquid crystals with orientation patterned on the sub-micron to micron range. Light propagating through patterned liquid crystals acquire a phase, commonly known as the Berry phase, that depends on the orientation of the optic axis. A flat slab of liquid crystal can thus perform as a diffractive optical element that transcribes the orientation distribution of the liquid crystal onto the transmitted or reflected phase of light. Various devices based on the concept will be presented and its potential use in future displays will be discussed.

 
 
09:00 - 09:15 Paper No.  2017-FRI-S0703-O001
Sheng-Guo Xu Optimize Microlens Array and Black Matrix for Color Separation in Color-Filter-Free LCD
Sheng-Guo Xu;Chih-Hsuan Kuo;Tun-Chien Teng

In this study, we optimized both the elliptical lenticular microlens and black matrix layout to improve both the efficiency and color gamut for a color-filter-free LCD system. For the optimal condition with the aperture ratio of 56.5%, the color gamut and optical efficiency is 70% and 60%, respectively.

 
 
09:15 - 09:30 Paper No.  2017-FRI-S0703-O002
Keng-Hsien Lin Full-color reflective display based on RGB stacked tunable liquid crystal reflectors
Keng-Hsien Lin;Tsung-Hsien Lin;Chun-Ta Wang;Ping-Chien Chang;Jia-Jin Lin;Yung-Jr Hung

A full-color reflective display was designed using three stacked RGB reflection gratings hybrid with the tunable 90o twisted nematic liquid crystal. The color reflector that is based on a guided-mode resonator grating structure reflects at the resonance wavelength, and a 90o TNLC to control the intensity of reflection.

 
 
09:30 - 09:45 Paper No.  2017-FRI-S0703-O003
Ching-Yeng Tu Polarization selective scattering based on polymer dispersed liquid crystals and interdigitated electrodes
Ko-Ting Cheng;Cheng-Kai Liu;Ching-Yeng Tu;Zhe-Yuang Liang

This study reports the polarization selective scattering based on polymer dispersed liquid crystals (PDLCs) and in-plane-switching (IPS) electrodes. In order to demonstrate the polarization-selective light scattering of PDLCs, the glass substrates coated with crossed interdigitated IPS electrodes were employed.

 
 
09:45 - 10:00 Paper No.  2017-FRI-S0703-O004
Hsu Chieh-Hsiang Spontaneously induced liquid crystal alignments in ionic nanoparticles-doped liquid crystals
Cheng Ko-Ting;Liu Cheng-Kai;Yang Hao-Shiun;Hsu Chieh-Hsiang;Wu Chao-Hsuan;Lai Chung K.;Kuo Hsiu-Ming

The feasibility to achieve various liquid crystal (LC) alignments in ionic nanoparticles-doped LCs (INPdLCs) has been demonstrated. Various alignment types, including vertical and homogeneous alignments, can also be approached as the INPs spontaneously adhere onto the substrates coated with various materials. The electrochemistry of the INPs is also investigated.