Electrophoretic display (EPD) is a kind of paper display technology, which has the advantages of ultra-low power consumption and readability under strong light. However, in an EPD driving process, four stages are needed to finish the driving of a pixel: erase original images, reset to black state, clear to white state, and write a new image. A white reference gray scale can be obtained before writing a new image, and this driving process may too long for comfort of reading. In this paper, an EPD driving waveform, which takes the black state as the reference gray, is proposed to short the driving time. In addition, the rules of direct-current (DC) balance are also followed to prevent the charge from getting trapped in the driving backplane. The driving process is fused and there are two stages in the driving waveform: reset to black state, write the next image. Firstly, the EPD is written to a stable black state according to the original gray scale driving waveform and the black state is used as the reference gray for the next image. Secondly, the new image is written by the second stage of the new driving waveform. The experimental results show that the proposed driving waveform has a better performance. Compared with the traditional driving waveform which has four stages, the driving time of the new driving waveform is reduced by nearly 50%.

中文翻译：

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基于驱动过程融合和黑色参考灰度的电泳显示器驱动波形设计

电泳显示（EPD）是一种纸质显示技术，具有超低功耗和强光下可读性等优点。然而，在EPD驱动过程中，完成一个像素的驱动需要四个阶段：擦除原始图像、重置为黑色状态、清除为白色状态和写入新图像。在写入新图像之前可以获得白色参考灰度，并且这个驱动过程可能太长而无法舒适地阅读。本文提出了一种以黑态为参考灰度的EPD驱动波形，以缩短驱动时间。此外，还遵循直流 (DC) 平衡规则，以防止电荷被困在驱动背板中。驱动过程是融合的，驱动波形有两个阶段：复位到黑色状态，写下一个图像。首先，根据原始灰阶驱动波形将EPD写入稳定的黑态，并将黑态作为下一图像的参考灰度。其次，新图像由新驱动波形的第二阶段写入。实验结果表明，所提出的驱动波形具有更好的性能。与传统的四级驱动波形相比，新型驱动波形的驱动时间缩短了近50%。实验结果表明，所提出的驱动波形具有更好的性能。与传统的四级驱动波形相比，新型驱动波形的驱动时间缩短了近50%。实验结果表明，所提出的驱动波形具有更好的性能。与传统的四级驱动波形相比，新型驱动波形的驱动时间缩短了近50%。