December 23, 2004
A new, lower-cost mechanism may replace Braille for graphical tactile displays for the blind.
The displays use metallic films featuring various shape-memory alloys (SMAs) produced layer by layer on silicon wafers using thin-film technology. Display pixels are generated when the SMA metallic film is deformed by heat pulses. The movement of the films is then transferred to the touch panel via plastic pins that can be detected by the… read more