SU-E-I-44: Investigation of the Contrast Ratio Required for Medical-Grade Liquid-Crystal Displays

2011 ◽  
Vol 38 (6Part4) ◽  
pp. 3405-3406
Author(s):  
S Takarabe ◽  
H Akamine ◽  
H Yabuuchi ◽  
Y Nakamura ◽  
N Hashimoto ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Contrast Ratio ◽  
Liquid Crystal Displays ◽  
Medical Grade

scholarly journals Patterned waveguide liquid crystal displays

RSC Advances ◽  
2020 ◽  
Vol 10 (68) ◽  
pp. 41693-41702
Author(s):  
Yunho Shin ◽  
Jinghua Jiang ◽  
Guangkui Qin ◽  
Qian Wang ◽  
Ziyuan Zhou ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Switching Time ◽  
Contrast Ratio ◽  
Liquid Crystal Displays ◽  
High Contrast ◽  
High Brightness ◽  
Photo Polymerization ◽  
Ultrafast Switching ◽  
Light Waveguide ◽  
Polymer Stabilized

A polymer stabilized LC based light waveguide display is reported. Performance is improved by patterned photo-polymerization or electrode. It has high brightness, ultrafast switching time, high contrast ratio, and high transmittance for transparent and augmented displays.

scholarly journals Light Leakage of Multidomain Vertical Alignment LCDs Using a Colorimetric Model in the Dark State

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Chuen-Lin Tien ◽  
Rong-Ji Lin ◽  
Shang-Min Yeh
Keyword(s):  
Liquid Crystal ◽  
Contrast Ratio ◽  
Liquid Crystal Displays ◽  
Vertical Alignment ◽  
Dark State ◽  
Proposed Model ◽  
Color Shift ◽  
Depolarization Of Light ◽  
The Difference ◽  
Color Filters

Light leakage from liquid crystal displays in the dark state is relatively larger and leads to a degraded contrast ratio and color shift. This work describes a novel colorimetric model based on the Muller matrix that includes depolarization of light propagating through liquid crystal molecules, polarizers, and color filters. In this proposed model, the chromaticity can be estimated in the bump and no-bump regions of an LCD. We indicate that the difference between simulation and measurement of chromaticity is about 0.01. Light leakage in the bump region is three times that in no-bump region in the dark state.

Full-color antiferroelectric liquid crystal displays with high contrast ratio

1996 ◽  
Vol 179 (1) ◽  
pp. 131-140 ◽  
Author(s):  
Koji Nakamura ◽  
Akira Takeuchi ◽  
Norio Yamamoto ◽  
Yuichiro Yamada ◽  
Yoshi-Ichi Suzuki ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Contrast Ratio ◽  
Liquid Crystal Displays ◽  
High Contrast ◽  
Full Color

P-96: Design of Liquid Crystal Displays with 10000: 1 Contrast Ratio over ±85° Viewing Cone

2005 ◽  
Vol 36 (1) ◽  
pp. 658 ◽  
Author(s):  
Qi Hong ◽  
Thomas X. Wu ◽  
Xinyu Zhu ◽  
Ruibo Lu ◽  
Shin-Tson Wu
Keyword(s):  
Liquid Crystal ◽  
Contrast Ratio ◽  
Liquid Crystal Displays

scholarly journals Objective Evaluation of Visual Fatigue for Reading of Radiographs Displayed on Medical-grade Liquid-crystal Displays

2010 ◽  
Vol 66 (11) ◽  
pp. 1416-1422 ◽  
Author(s):  
Keita Takahashi ◽  
Junji Morishita ◽  
Hiroyuki Tashiro ◽  
Yasuhiko Nakamura
Keyword(s):  
Liquid Crystal ◽  
Objective Evaluation ◽  
Liquid Crystal Displays ◽  
Visual Fatigue ◽  
Medical Grade

Reflective Chiral-Homeotropic Liquid Crystal Displays

2011 ◽  
Vol 181-182 ◽  
pp. 281-284
Author(s):  
Zhi Ren ◽  
Song Tao Li ◽  
Xi Pai Liu
Keyword(s):  
Liquid Crystal ◽  
Response Time ◽  
Parameter Space ◽  
Contrast Ratio ◽  
Dynamic Parameter ◽  
Liquid Crystal Displays ◽  
Fast Response ◽  
High Contrast ◽  
Fast Response Time ◽  
Space Method

The performance of a reflective chiral-homeotropic (R-CH) liquid crystal (LC) is simulated by the dynamic parameter space method. The normally black reflective chiral-homeotropic display shows weak color dispersion, high contrast ratio, and fast response time.

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