A light dimming dot pattern is provided for an LCD in which the diameter of dots is changed in a range from approximately 0. The improved coupling elements include a flowing liquid medium disposed between the transparent plate and the sensing element. This decreases the cost of production by eliminating the need for additional frame hardware andor more rigid frame hardware. Even when the resistance between the voltage application probe and the voltage application pad increases, the accurate setting voltage is applied to the voltage application pad. The movement assembly has a source of motive force and a linkage operably connected to one of the shield assembly and the electrode assembly for alternately covering and exposing the electrode assembly to the electric field. One of the processing nodes can cause the others of the processing nodes to perform the memory initialization and test process or each processing node can automatically perform the memory initialization and test process.