Tatsuo Mori, an engineering and computer science professor at Nagoya University, said some hurdles remained, including making the display bigger, ensuring durability and cutting costs.

• 名古屋（日本本州岛中南岸港市）大学的工程和计算机科学教授说，当前仍然有一些困难需要克服，包括把显示器尺寸做得更大，保证耐用性和降低成本。