Screen-printing fabrication of electrowetting displays based on poly[imide siloxane] and polyimide

分类： 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间： 2017-05-02

Chen, X [Chen, Xia][ 1 ] He, T [He, Tao][ 1 ] Jiang, HW [Jiang, Hongwei][ 1 ] Wei, BM [Wei, Biming][ 1 ] Chen, GF [Chen, Guofei][ 2 ] Fang, XZ [Fang, Xingzhong][ 2 ] Jin, ML [Jin, Mingliang][ 1 ] Hayes, RA [Hayes, Robert A.][ 1 ] Zhou, GF [Zhou, Guofu][ 1 ] Shui, LL [Shui, Lingling][ 1 ]

摘要： We report a screen-printing fabrication process for large area electrowetting display (EWD) devices using polyimide-based materials. The poly(imide siloxane) was selected as hydrophobic insulator layer, and relatively hydrophilic polyimide as grids material. EWD devices that use poly(imide siloxane) as hydro- phobic insulator fabricated with conventional methods showed good and reversible electrowetting per- formance on both single droplet level and device level, which showed its potential application in EWDs. The compatibility of polyimide-based materials (hydrophobic poly(imide siloxane) and hydrophilic poly- imide) guarantee the good adhesion between two layers and the capability of printable fabrication. To this end, the hydrophilic grids have been successfully built on hydrophobic layer by screen-printing directly. The resulting EWD devices showed good switch performance and relatively high yield. Com- pared to conventional method, the polyimide-based materials and method offer the advantages of simple, cheap and fast fabrication, and are especially suitable for large area display fabrication.

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