Patent ID: 7589714
Filing Date: 2009-09-15
Classification: G06F,G09B

Abstract:
1. A tactile display device disposed on a display screen for outputting display light corresponding to a display pattern, said tactile display device comprising: a pair of electrodes having a light transmissive property and disposed opposite to the display screen; a characteristic change layer disposed between said pair of electrodes, said characteristic change layer having a light transmissive property, wherein at least one of conductivity and magnetic permeability of said characteristic change layer changes at each part on the display screen in response to intensity of the display light; and an electrorheological fluid layer disposed between said pair of electrodes and opposite to said characteristic change layer, said electrorheological fluid layer having a light transmissive property, wherein viscosity of said electrorheological fluid layer changes at each part on the display screen in response to applied voltage applied through said characteristic change layer by said pair of electrodes.