ELECTROPHORETIC PARTICLES, DISPLAY DEVICE AND IMAGE SHEET HAVING THE SAME

摘要

PURPOSE: Electrophoretic particles, a display device with the same, and an image sheet with the same are provided to increase image quality such as a contrast ratio and color reproducibility and reduce a driving voltage. CONSTITUTION: The roundness of electrophoretic particles are determined by the following equation, a roundness degree = (2√(pi*A)/P). A is a 2D size of a protection area of a projected particle. P is a 2D length of a circumference of a projected particle. Grain size distribution of the electrophoretic particles are determined by the following equation, grain size distribution = (β/α)*100. α is a numerical average diameter of a particle size. β is a standard difference of the particle size.