Dou Yingying, Tang Biao, Groenewold Jan, Li Fahong, Yue Qiao, Zhou Rui, Li Hui, Shui Lingling, Henzen Alex, Zhou Guofu
Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China.
Sensors (Basel). 2018 Apr 6;18(4):1114. doi: 10.3390/s18041114.
Oil motion control is the key for the optical performance of electro-fluidic displays (EFD). In this paper, we introduced an extra pinning structure (EPS) into the EFD pixel to control the oil motion inside for the first time. The pinning structure canbe fabricated together with the pixel wall by a one-step lithography process. The effect of the relative location of the EPS in pixels on the oil motion was studied by a series of optoelectronic measurements. EPS showed good control of oil rupture position. The properly located EPS effectively guided the oil contraction direction, significantly accelerated switching on process, and suppressed oil overflow, without declining in aperture ratio. An asymmetrically designed EPS off the diagonal is recommended. This study provides a novel and facile way for oil motion control within an EFD pixel in both direction and timescale.
油滴运动控制是电流体显示器（EFD）光学性能的关键。在本文中，我们首次在EFD像素中引入了一种额外的固定结构（EPS），以控制内部的油滴运动。该固定结构可以通过一步光刻工艺与像素壁一起制造。通过一系列光电测量研究了EPS在像素中的相对位置对油滴运动的影响。EPS对油滴破裂位置显示出良好的控制。位置合适的EPS有效地引导了油滴收缩方向，显著加速了开启过程，并抑制了油滴溢出，同时开口率没有下降。建议采用非对角线不对称设计的EPS。本研究为在EFD像素内的油滴运动在方向和时间尺度上提供了一种新颖且简便的控制方法。
