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    • 10. 发明申请
    • PHOTOCONDUCTIVE OPTICAL TOUCH
    • 光电触摸
    • WO2015038396A1
    • 2015-03-19
    • PCT/US2014/054057
    • 2014-09-04
    • QUALCOMM MEMS TECHNOLOGIES, INC.
    • HONG, John HyunchulMA, Jian JimWEN, BingKIM, Cheonhong
    • G06F3/042G06K9/00
    • G06F3/0425G06F3/0412G06F3/042G06F3/0488G06K9/00013
    • An optical touch sensor may include traces of photoconductive material formed on a substantially transparent substrate. Each photoconductive trace may be capable of responding to an incident light intensity increase on a portion of the photoconductive trace by increasing the number of charged carriers, thereby raising the electrical conductivity of that portion of the photoconductive trace. An incident light intensity decrease on a portion of the photoconductive trace will lower the electrical conductivity of that portion of the photoconductive trace. The corresponding changes in voltage may be measured by circuits that include conductive traces formed substantially perpendicular to, and configured for electrical connection with, the traces of photoconductive material. A diode (such as a Schottky diode) may be formed at the electrical connections between the conductive traces and the photoconductive traces.
    • 光学触摸传感器可以包括在基本透明的基板上形成的光电导材料痕迹。 每个光电导迹可以通过增加带电载流子的数量来响应光电导迹的一部分上的入射光强度增加,从而提高该部分光电导迹的导电性。 在光电导迹的一部分上的入射光强度降低将降低该部分光电导迹的导电性。 可以通过包括导电迹线的电路来测量相应的电压变化,该导电迹线基本上垂直于光电导材料的轨迹并与其构成电连接。 可以在导电迹线和光电导迹之间的电连接处形成二极管(例如肖特基二极管)。