Novel addressing schemes for controlling electronically addressable displays include a scheme for rear-addressing displays, which allows for in-plane switching of the display material. Other schemes include a rear-addressing scheme which uses a retroreflecting surface to enable greater viewing angle...http://www.google.com.tw/patents/US6710540?utm_source=gb-gplus-share專利 US6710540 - Electrostatically-addressable electrophoretic display
