Electrode Dimension Effects on Blue-Phase Liquid Crystal Displays

Author

Chen, Kuan-Ming ; Yan, Jin ; Wu, Shin-Tson ; Chang, Yu-Pei ; Tsai, Chen-Chu ; Shiu, Jyh-Wen

Author_Institution

Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA

Volume

7

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

362

Lastpage

364

Abstract

Electrode dimension effects on the electro-optic properties of a polymer-stabilized blue-phase liquid crystal (PS-BPLC) are investigated experimentally. By reducing the width and gap of the in-plane-switching (IPS) electrodes, the operating voltage of the PS-BPLC is decreased significantly while keeping over 80% transmittance. This unexpected high transmittance results from fringing field migration into the electrode region, which in turn activates more BPLC material and enlarges the aperture ratio. Further reducing electrode dimension to 2 m would cause some undesirable effects, such as increased response time and hysteresis due to electrostriction effect and phase transition, and ultimately damage the polymer networks.

Keywords

electro-optical effects; electrodes; electrostriction; hysteresis; liquid crystal displays; polymer dispersed liquid crystals; blue phase liquid crystal displays; electro-optic property; electrode dimension effect; electrostriction effect; fringing field migration; in plane switching electrode; phase transition; polymer network damage; polymer stabilized blue phase liquid crystal; Dielectrics; Electrodes; Hysteresis; Liquid crystal displays; Liquid crystals; Polymers; Time factors; BPLC; electrode effects;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2011.2153177

Filename

5784425