Abstract
Fast moving ball is a moving ball which control the reflected light according to the applied voltages. A tiny ball moves under the applied bias and controlled by designed electrodes. We clarified underlying physics and thereby developed threshold voltage model of a fast-moving ball actuator (FMBA) for reflective electronic display. The proposed threshold voltage model starts from considering all the related forces of Coulomb force, dielectrophoretic (DEP) force, frictional force, and adhesion caused by Van der Waals force, where frictional force consists of vertical Coulomb and DEP forces, buoyancy, and gravity. However, there are many problems for successful commercialization and it is still under research. To put a metal ball in each pixel is difficult and takes long time. To solve them, we used the electroplating conjunction with sacrificial layer. During the formation of the electrodes, the moving ball was formed by electroplating and analyzed the moving of the ball. Figure 1
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