Research on refresh technology of electronic ink screen based on FPGA

Aiming at the problem of low refresh rate and high-power consumption of electronic ink screen, this paper studies a refresh optimization technology based on FPGA and proposes a dynamic waveform optimization algorithm (DWOA). The algorithm analyzes the dynamic and static areas of the image content, dynamically adjusts the driving waveform, selects high-frequency refresh waveform for the dynamic area, and selects low-frequency refresh waveform for the static area, thereby reducing unnecessary refresh operations and improving display efficiency. The system architecture is based on Xilinx ZYNQ7010/7017 chip, combined with dual-core ARM Cortex-A9 (PS side) and FPGA (PL side), realizing software and hardware collaborative optimization. The experiment was carried out in the Vivado 18.2 development environment, and the image sequence containing static and dynamic content was used for testing. The results show that the DWOA algorithm increases the refresh rate from 0.5 Hz of the traditional algorithm to 1.2 Hz, and reduces the power consumption from 2.5 W to 1.8 W. The algorithm not only significantly improves the display performance of the electronic ink screen, but also reduces energy consumption, providing a new technical path for the application of electronic ink screen in the field of dynamic display, which has important theoretical and practical significance.