Improvement of fast response LC materials by bent-core dopants in Optical Compensated Bend (OCB) mode liquid crystal displays

Ling Yung Wang, Shin Yi Tsai, Hong-Cheu Lin*, Szu Fen Fenny Chen, Robert Lyu, Chi Neng Mo

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

The stabilization of bend configuration in optical compensated bend (OCB) mode cells by doping bent-core molecules was developed in this study. The values of response time (i) and threshold voltage (Vth) in OCB cells were dependent on not only the concentration but also the shape, dipole direction, and flexible chain length of the doping molecules. Experimental results showed that the total response time (τtotal) and threshold voltage (Vth) of OCB cells could be reduced by doping bent-core molecules, and smaller i values by reducing flexible chain lengths as well as smaller Vth values by reducing polarization of bent-core molecules were normally obtained. In general, higher concentrations of dopants normally induced shorter field-on response time (τon) and a minimum field-off response time (τoff) occurred at 0.5% of doping concentration, where the fastest total response time (τtotal) values were achieved.

Original languageEnglish
Pages (from-to)40-43
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume39
Issue number1
DOIs
StatePublished - 1 Jan 2008
Event2008 SID International Symposium - Los Angeles, CA, United States
Duration: 20 May 200821 May 2008

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