An Analysis of Driving Property of a Reflective Electronic Display Fabricated by Using Filtering Method of Non-moving Particles

The driving properties of a particle-insertion method that filters non-moving particles are analyzed, by measuringits optical and electrical properties. An area that is occupied by the moved particles is proposed, as a desirableevaluation method for a reflective display. To compare the driving property of the particle-moving method withthat of the reported simple particle-loading method, two panels are fabricated, according to the different particleinsertionmethods, in the same panel condition, of which the width of ribs is 30 μm, the cell size is 220 μm × 220 μm,the cell gap is 116-120 μm, the q/m value of the black particles is +1.8 μC/g and that for the white particles is -4.3 μC/g. The particle-moving method has a filtering effect which excludes the non-moving particles, inserting only movableparticles into the respective cell, so that a panel fabricated by the particle-moving method can drive most of theparticles in a cell. Also, most of the particles move at the threshold voltage of 40 V, with enhanced reflectivity. Thedriving property is also verified by measurement of the occupation rate of the moved particles.