1. Guangdong Institute of Semiconductor Industrial Technology Guangdong Academy of Sciences No. 363 Changxing Road, Tianhe District Guangzhou 510650 China
2. Department of Information Physics and Computing University of Tokyo Hongo 7‐3‐1, Bunkyo‐ku Tokyo 113‐8656 Japan
3. Foshan Debao Display Technology Co Ltd. Room 508‐1, Level 5, Block A, Golden Valley Optoelectronics, Nanhai District Foshan 528200 China