Sheet-type Braille displays by integrating organic field-effect transistors and polymeric actuators
Sheet-type Braille displays by integrating organic field-effect transistors and polymeric actuators
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DOI：
10.1109/ted.2006.888678
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发表时间：
2007-02-01
影响因子：
3.1
通讯作者：
Someya, Takao
中科院分区：
文献类型：
--
作者：
Kato, Yusaku;Sekitani, Tsuyoshi;Someya, Takao
通过集成高质量的有机晶体管和软致动器，在塑料薄膜上成功地制造了一种大面积、柔性、轻质的片状盲文显示器。矩形塑料致动器阵列由全氟化聚合物电解质膜机械加工而成。一个小半球，从显示器的橡胶状表面向上突出，连接到每个矩形致动器的尖端。有效显示尺寸为4 x 4 cm（2）。每个盲文字母由3 x 2个点和24个字母组成;换句话说，可以显示6个字母x 4行。具有顶部接触几何形状的并五苯场效应晶体管的沟道长度为20 μ m，迁移率为1 cm（2）/V。S.一条线上的盲文点被驱动0.9秒。整个器械的总厚度和重量分别为1 mm和5.3 g。现时的计划可让视障人士随时把盲文单张放在口袋内，阅读盲文电子书。由于所有的设备组件都是在塑料薄膜上制造的，这些片状盲文显示器具有机械柔性、重量轻、抗震性，并且制造成本可能较低;因此，它们适用于移动的电子产品。
A large-area, flexible, and lightweight sheet-type Braille display has been successfully fabricated on a plastic film by integrating high-quality organic transistors and soft actuators. An array of rectangular plastic actuators is mechanically processed from a perfluorinated polymer electrolyte membrane. A small semisphere, which projects upward from the rubberlike surface of the display, is attached to the tip of each rectangular actuator. The effective display size is 4 x 4 cm(2). Each Braille letter consists of 3 x 2 dots and 24 letters; in other words, 6 letters x 4 lines can be displayed. Pentacene field-effect transistors with top-contact geometry have a channel length of 20 mu m and a mobility of 1 cm(2)/V . s. The Braille dots on one line are driven for 0.9 s. The total thickness and weight of the entire device are 1 nun and 5.3 g, respectively. The present scheme will enable people with visual impairments to carry the Braille sheet display in their pockets and read Braille e-books at any time. Since all the device components are manufactured on plastic films, these sheet-type Braille displays are mechanically flexible, lightweight, shock resistant, and potentially inexpensive to manufacture; therefore, they are suitable for mobile electronics.