International Display Workshops General Incorporated Association

12:00 〜 12:15

[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.