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    • 2. 发明授权
    • Electronic refreshable tactile display for Braille text and graphics
    • 电子刷新触觉显示屏盲文文字和图形
    • US5580251A
    • 1996-12-03
    • US509946
    • 1995-08-01
    • Alan M. GilkesMarvin W. CowensLarry A. Taylor
    • Alan M. GilkesMarvin W. CowensLarry A. Taylor
    • G09B21/00B41J3/32G08B6/00
    • G09B21/003
    • This is a Braille display device which comprises: a plurality of cavities; and circuitry to individually excite the plurality of cavities. The plurality of cavities contain a positive and a negative electrode 18, 22, 26 and are filled with a quantity of polar organic gel 24 sensitive to electric fields. The cavities are sealed by an elastomeric film 14. The elastomeric film is held generally flat, by its own tension, in the absence of any voltage applied to the electrodes 18, 22, 26 in the plurality of cavities. The display device can also include circuitry to determine whether the cavity has been touched by person who is reading the display. The display device can also include circuitry to individually vibrate each cavity. Other devices, systems and methods are also disclosed.
    • 这是盲文显示装置,其包括:多个空腔; 以及单独地激发多个空腔的电路。 多个空腔包含正极和负极18,22,26,并且填充有一定量的对电场敏感的极性有机凝胶24。 空腔由弹性体膜14密封。弹性体膜在不存在施加到多个空腔中的电极18,22,26的任何电压的情况下由其自身的张力保持为大致平坦的。 显示装置还可以包括用于确定正在阅读显示器的人是否已经感触到空腔的电路。 显示装置还可以包括用于单独地振动每个空腔的电路。 还公开了其他装置,系统和方法。