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    VERTICAL ELECTROCHROMIC DISPLAY
    2.
    发明公开
    VERTICAL ELECTROCHROMIC DISPLAY 有权
    垂直电铬显示器

    公开(公告)号：EP2776887A1

    公开(公告)日：2014-09-17

    申请号：EP12768865.3

    申请日：2012-10-05

    申请人： Acreo Swedish ICT AB

    发明人： ANDERSSON ERSMAN, Peter ,  SANDBERG, Mats

    IPC分类号： G02F1/153 ,  G02F1/15 ,  G02F1/155 ,  G02F1/163 ,  G09F9/302

    CPC分类号： G02F1/15 ,  G02F1/1533 ,  G02F1/155 ,  G02F1/163 ,  G02F2001/1519 ,  G02F2001/1536 ,  G02F2001/1555 ,  G02F2001/1557 ,  G09F9/3023

    摘要： A directly addressable display device comprising at least one pixel cell (1-9), each pixel cell (1-9) being arranged for displaying a symbol, which symbol is repeatedly switchable between an on-state and an off-state, wherein each pixel cell (1-9) comprises an electrochromic layer (110) comprising an electrochromic and electrochemically active organic polymer material being electrochemically switchable between two different visually detectable coloring states; a counter electrode layer (140) comprising an electronically conductive material, wherein said counter electrode layer (140) in the viewing direction of the display device is arranged behind said electrochromic layer (110); an electrolyte layer (130), which electrolyte layer (130) is solid and arranged spatially between, and in ionic contact with, said electrochromic layer (110) and said counter electrode layer (140); a symbol defining layer (120) which is electronically and ionically insulating, arranged in direct ionic contact with said electrochromic layer (110), and which comprises one or more openings (121-129) which encloses said electrolyte layer (130) and defines the shape of said symbols; wherein said electrolyte layer (130) comprises a composition comprising a polyelectrolyte selected from one or more cationic polymers, wherein the electrolyte is substantially free of small cations.