Two-dimensional blue phase liquid crystal microlens array with low driving voltage and polarization independence

2021 ◽  
pp. 1-9
Author(s):  
Li-Lan Tian ◽  
Yin Zhou ◽  
Lei Li ◽  
Fan Chu
Keyword(s):  
Liquid Crystal ◽  
Microlens Array ◽  
Driving Voltage ◽  
Two Dimensional ◽  
Phase Liquid ◽  
Blue Phase

scholarly journals Electrically-Tunable Blue Phase Liquid Crystal Microlens Array Based on a Photoconductive Film

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 65 ◽  
Author(s):  
Bing-Yau Huang ◽  
Shuan-Yu Huang ◽  
Chia-Hsien Chuang ◽  
Chie-Tong Kuo
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Electric Field ◽  
Uv Light ◽  
Focal Length ◽  
Incident Light ◽  
Microlens Array ◽  
Gradient Distribution ◽  
Phase Liquid ◽  
Blue Phase

This paper proposes an effective approach to fabricate a blue phase liquid crystal (BPLC) microlens array based on a photoconductive film. Owing to the characteristics of photo-induced conducting polymer polyvinylcarbazole (PVK), in which conductivity depends on the irradiation of UV light, a progressive mask resulting in the variation of conductivity is adopted to produce the gradient distribution of the electric field. The reorientations of liquid crystals according to the gradient distribution of the electric field induce the variation of the refractive index. Thus, the incident light experiences the gradient distribution of the refractive index and results in the focusing phenomenon. The study investigates the dependence of lens performance on UV exposure time, the focal length of the lens, and focusing intensities with various incident polarizations. The BPLC microlens array exhibits advantages such as electrically tunability, polarization independence, and fast response time.

Polarisation-independent blue-phase liquid crystal microlens array with different dielectric layer

2018 ◽  
Vol 46 (8) ◽  
pp. 1273-1279 ◽  
Author(s):  
Fan Chu ◽  
Hu Dou ◽  
Li-Lan Tian ◽  
Lei Li ◽  
Qiong-Hua Wang
Keyword(s):  
Liquid Crystal ◽  
Dielectric Layer ◽  
Microlens Array ◽  
Phase Liquid ◽  
Blue Phase

scholarly journals A vertical-field-driven polymer-stabilized blue phase liquid crystal mode to obtain a higher transmittance and lower driving voltage

2011 ◽  
Vol 19 (18) ◽  
pp. 17427 ◽  
Author(s):  
Yong-Hun Kim ◽  
Sung-Taek Hur ◽  
Chang-Sub Park ◽  
Kyung-Woo Park ◽  
Suk-Won Choi ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Driving Voltage ◽  
Vertical Field ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

scholarly journals InP/ZnS quantum dots doped blue phase liquid crystal with wide temperature range and low driving voltage

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jiayue Tang ◽  
Fashun Liu ◽  
Mengli Lu ◽  
Dongyu Zhao
Keyword(s):  
Quantum Dots ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Quantum Dot ◽  
Electric Field ◽  
Driving Voltage ◽  
Practical Application ◽  
Temperature Range ◽  
Phase Liquid ◽  
Blue Phase

Abstract Blue-phase liquid crystals (BPLCs) are regarded as potential materials for the exploitation of next-generation optical devices due to the rapid response, wide viewing angle, and simple industrial production procedures. However, practical application of traditional BPLCs is limited by their narrow temperature range and high driving voltage. Herein, we demonstrated that doping of chiral molecular isosorbide hexyloxybenzoate (R811) into BPLCs is able to increase the temperature range. More importantly, addition of InP/ZnS quantum dots (QDs) with oleylamine surface groups could also effectively broaden the temperature range of the BPLCs further while decreasing the driving voltage, which is attributed to the quantum dot trapped by BPLCs lattice defect that reduces its free energy. Since the trapped quantum dot subsequently forms a local electric field under electric field, the effective electric field of the surrounding liquid crystal molecules is enhanced and the rotation of the liquid crystal molecules is accelerated. Specially, the temperature range is widened by 1.4 °C, and the driving voltage is reduced by 57%, under the optimal concentration of R811 and lnP/ZnS QDs. The accomplishment we proposed in this work is a prospective optimization which makes the practical application of blue phase liquid crystals one step closer.

37.1:Distinguished Paper: A Novel Blue Phase Liquid Crystal Display Applying Wall-Electrode and High Driving Voltage Circuit

2015 ◽  
Vol 46 (1) ◽  
pp. 542-544 ◽  
Author(s):  
Cheng-Yeh Tsai ◽  
Fang-Cheng Yu ◽  
Yi-Fen Lan ◽  
Pu-Jung Huang ◽  
Szu-Yu Lin ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Driving Voltage ◽  
Phase Liquid ◽  
Blue Phase

scholarly journals Low voltage and high contrast blue phase liquid crystal with red-shifted Bragg reflection

2013 ◽  
Vol 102 (1) ◽  
pp. 011113 ◽  
Author(s):  
Jin Yan ◽  
Zhenyue Luo ◽  
Shin-Tson Wu ◽  
Jyh-Wen Shiu ◽  
Yu-Cheng Lai ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Low Voltage ◽  
Bragg Reflection ◽  
High Contrast ◽  
Phase Liquid ◽  
Blue Phase

Hydrogen-bonded bent-core blue phase liquid crystal complexes containing various molar ratios of proton acceptors and donors

RSC Advances ◽  
2016 ◽  
Vol 6 (38) ◽  
pp. 32319-32327 ◽  
Author(s):  
Chun-Chieh Han ◽  
Yu-Chaing Chou ◽  
San-Yuan Chen ◽  
Hong-Cheu Lin
Keyword(s):  
Liquid Crystal ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Chiral Center ◽  
Molar Ratio ◽  
Core Complex ◽  
Molar Ratios ◽  
Phase Liquid ◽  
Blue Phase

The molar ratio, alkyl chain length, lateral fluoro-substitution and the chiral center of H-bonded bent-core supramolecules would affect the BP ranges of BPLC complexes. H-bonded bent-core complex PIIIC9/AIIF* (3/7 mol mol−1) displayed the widest BPI range of ΔTBPI = 12 °C.

A Single-Cell-Gap Transflective Display Using a Blue-Phase Liquid Crystal

2011 ◽  
Vol 7 (4) ◽  
pp. 170-173 ◽  
Author(s):  
Feng Zhou ◽  
Jian-Peng Cui ◽  
Qiong-Hua Wang ◽  
Da-Hai Li ◽  
Di Wu
Keyword(s):  
Liquid Crystal ◽  
Single Cell ◽  
Phase Liquid ◽  
Blue Phase
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