1. Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
2. Electronic and Optoelectronic System Research Laboratories, Industrial Technology Research Institute, Hsinchu 31057, Taiwan
3. Graduate Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
4. Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan
5. Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan