Introducing spacers into pixelated electrowetting displays (EWDs) normally gives mechanical strengthening, while bringing undesired disturbance of water/oil interfacial dynamics. Hence, spacer array is a key pixel structure needs careful consideration in the design and fabrication of electrowetting displays. Here, we propose a spacer array, which is designed standing on the junction of adjacent pixel walls, fabricated by photolithography. The spacer array provides mechanical strength enhancement and reliable oil motion controllability. By optimizing the spacer distribution density, the EWD device may achieve 28% increase in open ratio (white area fraction) and withstand 60 N/mm2 pressure. This design of spacer array reasonably solves the contradiction between mechanical strength enhancement and optoelectronic performance in EWDs, providing potential applications in oil-water two-phase microfluidic devices.

中文翻译：

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光刻制造的间隔物阵列，可在电润湿显示器中提供机械强度和油运动控制。

在像素化电润湿显示器（EWD）中引入隔离物通常可以增强机械强度，同时会带来对水/油界面动力学的不良干扰。因此，间隔物阵列是关键的像素结构，在电润湿显示器的设计和制造中需要仔细考虑。在这里，我们提出了一种间隔物阵列，该间隔物阵列设计为通过光刻法制造，位于相邻像素壁的交界处。间隔物阵列可增强机械强度并提供可靠的油运动可控性。通过优化间隔物的分布密度，EWD装置的开口率（白色面积分数）可以提高28％，并可以承受60 N / mm2的压力。间隔物阵列的这种设计合理地解决了EWD中机械强度增强和光电性能之间的矛盾，