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Continuous Pretilt Angle Controlled No-Bias-Bend Pi Cell via Blended Polyimide Liquid Crystal System

Authors :
Hong Gyu Park
Dae Shik Seo
Jeong Yeon Hwang
Yong Pil Park
Chul Ho Ok
Dai Hyun Kim
Byoung Yong Kim
Young Hwan Kim
Jeong Min Han
Source :
Molecular Crystals and Liquid Crystals. 529:102-108
Publication Year :
2010
Publisher :
Informa UK Limited, 2010.

Abstract

The controllable pre-tilt angle of liquid crystals was investigated using a blend of horizontal and vertical polyimide prepared using a rubbing method. Various pretilt angles ranging from 0° to 90° were achieved as a function of the vertical polyimide content. We observed uniform liquid crystal alignment on the rubbing-treated blended polyimide layer. A no-bias-bend (NBB) pi cell with an intermediate pretilt angle of 47.8° was manufactured. This cell had no initial bias voltage and a low threshold voltage, which indicates that it has low power consumption. In addition, the response time of the NBB pi cell was rapid.

Details

ISSN :
15635287 and 15421406
Volume :
529
Database :
OpenAIRE
Journal :
Molecular Crystals and Liquid Crystals
Accession number :
edsair.doi...........809c2c1469caea1f906f19a8ed0afc98
Full Text :
https://doi.org/10.1080/15421406.2010.495685