International Display Workshops General Incorporated Association

Proceedings of the International Display Workshops Volume 27 (IDW '20)

Proceedings of the International Display Workshops Volume 27 (IDW '20)

Dec 9, 2020 - Dec 11, 2020
Virtual Conference

12:00 PM - 12:15 PM

[LCT5-5L] Ambient Contrast Ratio of a Liquid Crystal Cell Stacked on a Luminescent Layer

*Yoshiki Yamada1, Yasuhiro Tsutsumi1, Ichiro Fujieda1 (1. Ritsumeikan University(Japan))

ambient contrast ratio, liquid crystal, luminescent waveguide

https://doi.org/10.36463/idw.2020.0076

A twisted-nematic liquid crystal cell was placed on a Coumarin 6 layer formed on a transparent plate. Its ambient contrast ratio remained around 10 even at the illuminance of 222 klx while that of a transmissive liquid crystal display operated at 397 cd/m2 decreased to 5.4.