A design system for driving waveforms of microcapsule electrophoretic display

Abstract

Due to its advantageous features (eye protection, low energy consumption and capability of being read under any lighting-conditions), Electrophoretic displays (EPD) have been rapidly developed in the past ten years. Different types or production batches of EPD films need different driving waveforms; even in the same device, different driving waveforms are required under different environments to guarantee the display quality. Therefore, the design of driving waveforms is always the core of EPD display technology. The image displayed using 4 gray levels is not sufficiently satisfactory. To improve the display quality of EPD, the design of driving waveforms with 16 gray levels has been proposed. This paper presents a stable and adaptive design system, which may better design driving waveforms with 16 gray levels and guarantee the required display quality. Simultaneously, the design steps are simplified, and the work efficiency is improved.