Stable azodye photo-alignment layer for liquid crystal devices achieved by “turning off” dye photosensitivity

2017 ◽  
Vol 122 (20) ◽  
pp. 205301 ◽  
Author(s):  
C. McGinty ◽  
V. Finnemeyer ◽  
R. Reich ◽  
H. Clark ◽  
S. Berry ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Alignment Layer ◽  
Liquid Crystal Devices ◽  
Photo Alignment

Electro-optical property of polymerized liquid crystal devices using linearly polarized UV irradiation

2021 ◽  
Author(s):  
Masahiro Ito ◽  
Kazuma Kajiwara ◽  
Kohki Takatoh
Keyword(s):  
Liquid Crystal ◽  
Uv Light ◽  
Strong Dependence ◽  
Fast Response ◽  
Alignment Layer ◽  
Liquid Crystal Devices ◽  
Decay Times ◽  
Linearly Polarized ◽  
Reactive Mesogens ◽  
Strong Anchoring

Abstract Display characteristics have a fairly strong dependence on the configuration of the liquid crystal (LC) molecules and interactions between the LC molecules and the alignment layer surface. To obtain LC devices with a fast response, the usage of reactive mesogens (RMs) have been studied. RMs polymerize in the vicinity of the alignment layer. We assessed the effectiveness of linearly polarized UV light for polymer formation. Three kinds of UV light, namely (i)non-polarized (ii)parallel to, and (iii)perpendicular to the rubbing direction, were used to irradiate LC cells with RM concentrations of 5wt% and 10wt%. For both RM concentrations, LC devices using LPUV parallel to the rubbing direction yielded the shortest decay times. SEM observation revealed that the fibrils polymerized linearly in the same direction on using LPUV parallel to the rubbing direction. The decay time was presumably shortened by the strong anchoring force and high alignment ability of the linear fibrils.

An improved alignment layer grown by oblique evaporation for liquid crystal devices

Displays ◽  
2006 ◽  
Vol 27 (2) ◽  
pp. 69-72 ◽  
Author(s):  
Wan-Rone Liou ◽  
Chin-Ying Chen ◽  
Jyh-Jier Ho ◽  
Chao-Kuei Hsu ◽  
Chung-Cheng Chang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Alignment Layer ◽  
Liquid Crystal Devices

P.98: Novel Composite Photo-alignment Layer for Ferroelectric Liquid Crystal Display

2013 ◽  
Vol 44 (1) ◽  
pp. 1353-1354
Author(s):  
Qi Guo ◽  
Abhishek Srivastava ◽  
Ying Ma ◽  
Eugene Pozhidaev ◽  
Vladimir Chigrinov ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Ferroelectric Liquid Crystal ◽  
Alignment Layer ◽  
Photo Alignment

The effect of SiOx alignment layer thickness on the switching of SmC∗ bistable liquid crystal devices

2010 ◽  
Vol 107 (1) ◽  
pp. 014103 ◽  
Author(s):  
Mitya Reznikov ◽  
Philip J. Bos ◽  
Michael J. O’Callaghan
Keyword(s):  
Liquid Crystal ◽  
Layer Thickness ◽  
Alignment Layer ◽  
Liquid Crystal Devices

Monolayer graphene electrodes as alignment layer for ferroelectric liquid crystal devices

2019 ◽  
Vol 279 ◽  
pp. 294-298 ◽  
Author(s):  
Achu Chandran ◽  
Tilak Joshi ◽  
Indu Sharma ◽  
Kiran M. Subhedar ◽  
Dalip S. Mehta ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Monolayer Graphene ◽  
Ferroelectric Liquid Crystal ◽  
Alignment Layer ◽  
Liquid Crystal Devices

Using Replica Molding Method to Fabricate Alignment-Layer Free Flexible Liquid Crystal Devices

2009 ◽  
Vol 507 (1) ◽  
pp. 194-201 ◽  
Author(s):  
Pei-Shiang Chen ◽  
Han-Hsun Chang ◽  
Jun-Wei Chen ◽  
Tzu-Chieh Lin ◽  
Chih-Yu Chao
Keyword(s):  
Liquid Crystal ◽  
Alignment Layer ◽  
Replica Molding ◽  
Molding Method ◽  
Liquid Crystal Devices

Cinnamate-functionalized hyperbranched polymer as liquid crystal photo-alignment layer

2008 ◽  
Vol 19 (9) ◽  
pp. 1131-1134 ◽  
Author(s):  
Bin Jun Shen ◽  
Zheng Xie ◽  
Ya Ning He ◽  
Yan Qing Lian
Keyword(s):  
Liquid Crystal ◽  
Hyperbranched Polymer ◽  
Alignment Layer ◽  
Photo Alignment

scholarly journals Photo-Aligned Ferroelectric Liquid Crystal Devices with Novel Electro-Optic Characteristics

Crystals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 563
Author(s):  
Vladimir Chigrinov ◽  
Qi Guo ◽  
Aleksey Kudreyko
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Berry Phase ◽  
Photonic Devices ◽  
Ferroelectric Liquid Crystal ◽  
Optical Elements ◽  
Ferroelectric Liquid Crystals ◽  
Liquid Crystal Devices ◽  
Alignment Technique ◽  
Photo Alignment

This paper examines different applications of ferroelectric liquid crystal devices based on photo-alignment. Successful application of the photo-alignment technique is considered to be a critical breakthrough. A variety of display and photonic devices with azo dye aligned ferroelectric liquid crystals is presented: smart glasses, liquid crystal Pancharatnam–Berry phase optical elements, 2D/3D switchable lenses, and laser therapy devices. Comparison of electro-optical behavior of ferroelectric liquid crystals is described considering the performance of devices. This paper facilitates the optimization of device design, and broadens the possible applications in the display and photonic area.

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