中文摘要：

盲文显示装置可将纸质书籍或者电子文档中的普通文字转换成专为盲人识别的盲文点字,供盲人触摸阅读,在盲人教学中越来越受到欢迎,已成为盲人辅助产品研究的前沿和焦点。首先回顾了盲文显示装置的研究历程,阐述了国内外研究现状;其次总结了盲文显示装置的研发难点,主要包括盲文触点的驱动方式、盲文触点的控制、盲文触点的分辨率等研发难点;然后对现有盲文显示装置的性能进行了比较;最后对盲文显示装置的发展潜力及未来趋势进行了展望。研发成本低、体积小、信息存储量大、响应速度快、便于携带的盲文显示装置,对于改善人数众多盲人弱势群体的生活质量、提高盲人的文化水平有着重大的意义。

英文摘要：

The braille display device can transform printed books or common characters in electronic documents to braille characters for the blind so that the blind can touch and read them.Hence,it is increasingly welcomed in teaching the blind.It has become the leading edge and focus of ancillary product research for th blind.Firstly,this paper reviews the research history of braille display device and expounds domestic and foreign research situations.Secondly,this paper summarizes research and development difficulties of braille display device,mainly including braille contact driving mode,braille contact control and resolution ratio of Braille contact.Thirdly,the properties of existing braille display devices are compared.Finally,development potential and future trend of braille display device are prospected.The portable braille display device with loe research and development cost,small volume,large information memory space and fast response speed has great significance for improving living quality of numerous vulnerable groups and boosting their cultural level.