Patent ID: 8047849
Filing Date: 2011-11-01
Classification: G09B,Y10T

Abstract:
1. A braille display device using an electrorheological fluid, comprising: a base body in which a plurality of insulating reception grooves are formed; a first electrode arranged below the base body; an electrorheological fluid stored in a lower portion of each of the reception grooves; a microcapsule having an electrophoresis particle which is dispersed in the electrorheological fluid; a second electrode arranged above the electrorheological fluid in each of the reception grooves; a braille pin installed above the second electrode; and a braille pin protection film arranged above the braille pin, wherein the second electrode is bent to an upper direction when a voltage is applied to the first and second electrodes and a viscosity of the electrorheological fluid is changed due to an electrophoresis phenomenon.