DRIVING METHODS FOR TIR-BASED IMAGE DISPLAYS

Optical states in TIR-based image displays may be modulated by movement of electrophoretically mobile particles into and out of the evanescent wave region at the interface of a high refractive index convex protrusions and a low refractive index medium. The movement of particles into the evanescent wave region may frustrate TIR and form dark states at pixels. Movement of particles out of the evanescent wave region may allow for TIR of incident light to form bright states at pixels. The movement of the particles may be controlled by employing the drive methods of pulse width modulation, voltagemodulation or a combination thereof. 基于TIR的图像显示器中的光学状态可以通过电泳移动粒子进入和离开在高折射率的凸出的突起和低折射率介质的界面处的消逝波区域的的移动来调制。粒子进入消逝波区域的移动会抑制TIR，并在像素处形成暗态。粒子粒子离开消逝波区域的移动可允许入射光的TIR以在像素处形成亮态。可通过采用脉冲宽度调制、电压调制或其组合的驱动方法来控制粒子的移动。