IEEE Trans Haptics. 2021 Oct-Dec;14(4):712-721. doi: 10.1109/TOH.2021.3085915. Epub 2021 Dec 16.
Traditional paper documents with Braille characters and tangible graphics have obvious defects to disseminate knowledge in the information age. Information accessibility is an urgent challenge for blind individuals. Although many types of tactile displays were created for different applications, we especially focus on the tactile display for visually impaired people, which can dynamically generate tangible graphics and Braille characters, to help the blind obtain information conveniently. In this article, we present the state-of-the-art of graphic tactile displays (GTDs) and refreshable Braille displays (RBDs), then discuss their common kernel technologies about actuators and latch structures. This article summarizes the performance of typical actuators of tactile displays and analyzes the working principles of some latch structures. This article systematically summarizes latch structures of GTDs and RBDs, for the first time. Several comments in this paper will be useful to develop high-performance tactile displays for visually impaired people.
传统的具有盲文字符和实体图形的纸质文档在信息时代传播知识时有明显的缺陷。信息无障碍是盲人面临的一个紧迫挑战。虽然已经创建了许多类型的触觉显示器用于不同的应用，但我们特别关注用于视障人士的触觉显示器，它可以动态生成实体图形和盲文字符，帮助盲人方便地获取信息。本文介绍了图形触觉显示器 (GTD) 和可刷新盲文显示器 (RBD) 的最新技术进展，然后讨论了它们关于驱动器和锁存结构的共同核心技术。本文总结了触觉显示器典型驱动器的性能，并分析了一些锁存结构的工作原理。本文首次系统地总结了 GTD 和 RBD 的锁存结构。本文中的几点评论对于开发用于视障人士的高性能触觉显示器将是有用的。
