柔性显示作为下一代显示，由于其具有超薄，质量轻，耐用等优点，已经引起了广泛的关注。为了制备柔性显示，柔性薄板如塑料和金属薄片作为衬底已被研究。在过去十几年中，柔性衬底大规模替代传统的玻璃衬底具备很大的潜力，其被认为是柔性显示发展的关键。文章综述了柔性衬底如聚合物、不锈钢、超薄玻璃、纸质和生物复合物的最新进展，并针对柔性衬底的缺点介绍了改善方法。最后，为了推进柔性显示的发展，概述了卷对卷技术，其在柔性显示应用中有着广阔的市场。

Flexible displays have been attracted much attention as a next generation display for their ultra-slim, light weight, durable, and conformable properties. In order to fabricate flexible displays,the flexible sheets such as plastics and metal foils have been developed as a substrate material.Over the past decade, flexible substrates that have enabled the potential for wide-scale replacement of traditional glass substrates are critical to flexible displays development. This progress report provides an update developments in flexible substrates, which include polymer, stainless steel, ultra-thin glass, paper, bio-composite.Meanwhile,some novel solutions were summarized to overcome shortcomings in developing flexible displays.Finally, roll-to-roll technology for the development of flexible displays will be introduced, since it will allow their market implementation in flexible displays.