公开(公告)号：EP2216816B1

公开(公告)日：2017-12-27

申请号：EP10152785.1

申请日：2010-02-05

申请人： Japan Display Inc. ,  Panasonic Liquid Crystal Display Co., Ltd.

发明人： Toyota, Yoshiaki ,  Matsumura, Mieko ,  Wakagi, Masatoshi

IPC分类号： H01L27/12 ,  H01L21/77 ,  H01L29/04 ,  H01L29/423 ,  H01L29/786

CPC分类号： H01L27/1214 ,  H01L29/04 ,  H01L29/42384 ,  H01L29/78618

摘要： A display device includes a plurality of thin-film transistors formed on a substrate on which a display area is formed. At least one of the plurality of thin-film transistors includes a gate electrode, a gate insulating film formed to cover the gate electrode, an interlayer insulating film formed on an upper surface of the gate insulating film and having an opening formed in an area where the gate electrode is formed in plan view, a pair of heavily-doped semiconductor films arranged on an upper surface of the interlayer insulating film with the opening interposed therebetween, a polycrystalline semiconductor film formed across the opening and formed in the area, the polycrystalline semiconductor film being electrically connected to the pair of heavily-doped semiconductor films, and a pair of electrodes formed to overlap the pair of heavily-doped semiconductor films, respectively, without overlapping the polycrystalline semiconductor film.