Decreasing the Residual DC Voltage by Neutralizing the Charged Mobile Ions in Liquid Crystals
Yang Liu,
Jingxin Sang,
Hao Liu,
Haiqin Xu,
Shuguang Zhao,
Jiatong Sun,
Ju Hwan Lee,
Hae-Chang Jeong,
Dae-Shik Seo
Affiliations
Yang Liu
College of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
Jingxin Sang
College of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
Hao Liu
College of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
Haiqin Xu
College of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
Shuguang Zhao
College of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
Jiatong Sun
College of Information Science and Technology, Donghua Uiversity, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
Ju Hwan Lee
Information Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
Hae-Chang Jeong
Information Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
Dae-Shik Seo
Information Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
The decrease of the residual direct current (DC) voltage (Vrdc) of the anti-parallel liquid crystal (LC) cell using silver (Ag)-doped Polyimide (Ag-d-PI) alignment layers is presented in this manuscript. A series of Ag/PI composite thin layers are prepared by spurting or doping PI thin layers with Ag nano-particles, and Ag/PI composite thin layers are highly transparent and resistive. LC are homogeneously aligned between 2.0 mg/mL Ag-d-PI alignment layers, and the Vrdc of the cell that assembled with Ag-d-PI alignment layers decreases about 82%. The decrease of Vrdc is attributed to the trapping and neutralizing of mobile ions by Ag nano-particles. Regardless of the effect of Ag nano-particles on the conductivity of Ag-d-PI alignment layers, the voltage holding ratio (VHR) of the cells is maintained surprisingly. The experiment results reveal a simple design for a low Vrdc LC cell.
