1. RIPE & 3D Printing, Hanbat National University, Daejeon, Republic of Korea
2. Department of Creative Convergence Engineering, Hanbat National University, Daejeon, Republic of Korea
3. Department of Electronics Engineering, Hanbat National University, Daejeon, Republic of Korea
4. Flexible Device Research Group, Electronics and Telecommunications Research Institute (ETRI), Daejeon, Republic of Korea
5. Department of Display Engineering, Pukyong National University, Busan, Republic of Korea