Electrophoretic display device and manufacturing method thereof

An electrophoretic display device comprises a back plate structure, a buffer layer, a gap wall, a display medium, an upper substrate and an upper electrode. The backboard structure comprises a lower substrate, a transistor formed on the lower substrate and a lower electrode electrically connected to the transistor. The buffer layer is arranged on the backboard structure. The spacer is disposed on the buffer layer and forms a closed pattern. The display medium is disposed in the closed pattern, wherein the display medium includes an electrophoretic medium and a plurality of electrophoretic particles dispersed in the electrophoretic medium. The upper substrate is arranged on the gap wall and the display medium. The upper electrode is arranged between the upper substrate and the gap wall. 一种电泳显示装置，包括一背板结构、一缓冲层、一间隙壁、一显示介质、一上基板以及一上电极。背板结构包括一下基板、形成于下基板上的一晶体管以及电性连接于晶体管的一下电极。缓冲层设置于背板结构上。间隙壁设置于缓冲层上，且形成一封闭图案。显示介质设置于封闭图案之中，其中显示介质包括一电泳介质及分散于电泳介质中的多个电泳粒子。上基板设置于间隙壁与显示介质之上。上电极设置于上基板与间隙壁之间。