1. Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
2. Shenzhen Guohua Optoelectronics Tech., Co., Ltd., Shenzhen 518110, China
3. Academy of Shenzhen Guohua Optoelectronics, Shenzhen 518110, China
4. University of Chinese Academy of Sciences, Ningbo Institute of Materials Technology and Engineering, Ningbo 315201, China