A large size panel manufacturing process for electrowetting display (EWD) by using surface treatment and ink‐jet printing (IJP) techniques had been developed. for hydrophilic rib fabrication, surface treatment technique was adopted to reinforce the adhesion of hydrophilic material on hydrophobic layer to achieve large‐Sized panel manufacturing. Also, for dosing of non‐polar liquid, IJP technique was used to dose the liquid into the unit pixel individually. By using IJP technique to dose the red, green, and blue oils, full color of EWD can be achieved without adopting color filter in the future. Here, a 6‐inch monochrome EWD prototype was successfully fabricated by using our proposed techniques.

When we saw the object behind the transparent display, the image blur was observed. In this paper, the phenomenon was evaluated by measuring the diffraction width and MTF (modulation transfer function). By optimizing the pixel layout, the diffraction width of object image could be decreased to 54% in X direction and 48% in Y direction, the MTF also showed that the image quality could be improved by modifying the structure of transparent display.