1. Department of Electrical and Computer Engineering, Institute of Communications Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
2. Technology Development Center, InnoLux Corporation, Hsinchu 35053, Taiwan
3. Department of Photonics, Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
4. Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan