Unlike mainstream TFT-LCD screens whose main components are glass substrates, liquid crystal, and backlight modules, EPDs are made from soft plastic sheets covered with miniscule capsule-like balls known as electronic ink (e-ink). Inside the capsules are positively charged white particles and negatively charged black particles.
不同於主流平面顯示器 TFT-LCD 是以玻璃基板、液晶及背光模組等為主要結構，電泳式顯示器是在塑膠薄片上塗滿類似膠囊狀的微小球體（即 e-ink，電子墨水），膠囊內裝的則是正電荷白粒子和負電荷黑粒子。