Patent ID: 8791934
Filing Date: 2014-07-29
Classification: G09G

Abstract:
1. A method of driving an electro-optic display, the electro-optic display having image regions, each image region being driven by applying a voltage across the image region to select one of: a first driving state in which a zero voltage, which zero voltage is substantially equal to zero, is applied across the image region; and a second driving state in which a non-zero voltage, which non-zero voltage is substantially different from said zero voltage, is applied across the image region, the non-zero voltage being one of a plurality of non-zero voltages having the same polarity, the method comprising: applying a common voltage signal to a plurality of said image regions; applying an actuating voltage signal to one or more selected ones of said plurality of image regions, the voltage applied across the image region being a difference between the common voltage signal and the actuating voltage signal; and varying both said common voltage signal and said actuating voltage signal when switching said selected image regions between said first driving state and said second driving state.