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    • 2. 发明申请
    • PRESSURE SENSING TOUCH SYSTEMS AND METHODS
    • 压力感应触摸系统及方法
    • WO2014055809A1
    • 2014-04-10
    • PCT/US2013/063355
    • 2013-10-04
    • CORNING INCORPORATEDCHEN, MinghanGOLLIER, JacquesLI, Ming-JunMILLER, William JamesNOLAN, Daniel AloysiusMICHALOSKI, Paul, Francis
    • CHEN, MinghanGOLLIER, JacquesLI, Ming-JunMILLER, William JamesNOLAN, Daniel AloysiusMICHALOSKI, Paul, Francis
    • G06F3/042
    • G06F3/0421G06F3/044G06F3/045
    • Pressure-sensing touch systems and methods are disclosed for sensing the occurrence of a touch event based on pressure applied at a touch location. The touch system includes a light-source system and a detector system operably disposed adjacent respective input and output edges of a waveguide either in the form of a transparent sheet or as formed in a transparent sheet. Pressure at a touch location on the waveguide that gives rise to a touch event causes the waveguide to bend or flex. The waveguide bending causes a change in the optical paths of light traveling by FTIR in the waveguide. This in turn causes the light distribution in the output light to change. The changes in the light distribution are detected and are used to determine whether a touch event occurred, as well as the time-evolution of the touch event. The changes in the output light can include polarization changes caused by birefringence induced in the waveguide by the pressure applied at the touch location. Various detector configurations are disclosed for sensing the location and pressure of a touch event.
    • 公开了用于基于在触摸位置处施加的压力来感测触摸事件的发生的压力感测触摸系统和方法。 触摸系统包括光源系统和可操作地设置在波导的相应输入和输出边缘处的透光片或形成在透明片中的检测器系统。 在波导上的触摸位置处的压力导致触摸事件导致波导弯曲或弯曲。 波导弯曲导致在波导中通过FTIR行进的光的光路的变化。 这又导致输出光中的光分布发生变化。 检测到光分布的变化,并用于确定触摸事件是否发生,以及触摸事件的时间演化。 输出光的变化可以包括由在触摸位置处施加的压力在波导中引起的双折射引起的偏振变化。 公开了用于感测触摸事件的位置和压力​​的各种检测器配置。