Optimized blue-phase liquid crystal for field-sequential-color displays

We report an optimized blue phase liquid crystal (BPLC) mixture JC-BP08 for field-sequential-color (FSC) display applications. JC-BP08 exhibits several attractive features: 1) its fast average gray-to-gray response time enables FSC display, which in turn triples the resolution density and optical ef...

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Bibliographic Details
Published in:Optical materials express 2017-02, Vol.7 (2), p.641-650
Main Authors: Huang, Yuge, Chen, Haiwei, Tan, Guanjun, Tobata, Hitoshi, Yamamoto, Shin-ichi, Okabe, Eiji, Lan, Yi-Fen, Tsai, Cheng-Yeh, Wu, Shin-Tson
Format: Article
Language:English
Subjects:
Charging
Dielectric constant
Displays
Electric potential
Electrodes
Liquid crystals
Transmittance
Voltage
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Summary:We report an optimized blue phase liquid crystal (BPLC) mixture JC-BP08 for field-sequential-color (FSC) display applications. JC-BP08 exhibits several attractive features: 1) its fast average gray-to-gray response time enables FSC display, which in turn triples the resolution density and optical efficiency. 2) Its voltage holding ratio is >99.4% at 25[degrees]C and >93.2% at 60[degrees]C. 3) Its average dielectric constant [epsilon]'[approximate]87 is still manageable by the bootstrapping driving to enable 240 Hz operation. 4) Using a triangular protrusion electrode structure, the transmittance can reach 74% at 15V, which enables single-TFT driving. 5) With two-domain structure, it offers indistinguishable gamma shift and wide viewing angle. We proposed a voltage charging model and found a linear relationship between the required charging time and [epsilon]', which is validated by our experimental results.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.7.000641