1. Department of Electrical and Electronic Engineering; South University of Science and Technology of China; University Town; Shenzhen 518055 P. R. China
2. School of Electrical and Electronic Engineering; Nanyang Technological University; 639798 Singapore
3. TFT-LCD Technology Center; BOE Technology Group Co., Ltd.; No. 9 Dize Rd BDA Beijing 100176 P. R. China
4. School of Materials Science and Engineering; Hubei University; Wuchang District; Wuhan 430062 P. R. China