Electrochromic display device and electrodeposition display device
AssigneeSony Corporation
InventorsKenji Shinozaki, Akio Yasuda, Kazuhiro Noda, Toru Udaka, Mieko Kuwahara
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Abstract
Between each transparent pixel electrode driven by TFT as a drive device and a common electrode, a polymer layer located in contact with the transparent pixel electrode and electrically active to change in color by electrochemical oxidization or reduction and a polymeric solid electrolytic layer located in contact with the polymer layer and containing a coloring agent are interposed. since electrochemical oxidization or reduction brings about a color change, the contrast and the black concentration can be enhanced, and bronzing after long-time use does not occur.
Claims31
An electrochromic display device comprising:
- a first transparent electrode controlled by a drive device:
- a polymer material layer located in contact with said transparent electrode and electrically active to be changeable in color by electrochemical oxidation or reduction;
- a polymeric solid electrolytic layer located in contact with said polymer material layer and containing a coloring agent;
- and a second electrode located to interpose said polymer material layer and said polymeric solid electrolytic layer between said first transparent electrode and said second electrode.
An electrodeposition type display device comprising:
- a first transparent electrode controlled by a drive device;
- a polymeric solid electrolytic layer containing a coloring agent and metal ions;
- and a second electrode located to interpose said polymeric solid electrolytic layer between said first transparent electrode and said second electrode.
An electrochromic display apparatus comprising a sheet-like array of a plurality of electrochromic display elements each including:
- a first transparent electrode controlled by a drive device:
- a polymer material layer located in contact with said transparent electrode and electrically active to be changeable in color by electrochemical oxidation or reduction;
- a polymeric solid electrolytic layer located in contact with said polymer material layer and containing a coloring agent;
- and a second electrode located to interpose said polymer material layer and said polymeric solid electrolytic layer between said first transparent electrode and said second electrode.
An electrodeposition type display device comprising a sheet-like array of a plurality of electrodeposition type display elements each including:
- a first transparent electrode controlled by a drive device;
- a polymeric solid electrolytic layer containing a coloring agent and metal ions;
- and a second electrode located to interpose said polymeric solid electrolytic layer between said first transparent electrode and said second electrode.
A method of manufacturing an electrochromic display apparatus comprising:
- the step of forming transparent pixel electrodes and drive devices on a transparent support structure;
- the step of forming a polymer material layer electrically active and changeable in color by electrochemical oxidization or reduction, and a polymeric solid electrolytic layer containing a coloring agent on said transparent support structure having formed said transparent pixel electrodes and said drive devices;
- and the step of forming a common electrode opposed to said transparent pixel electrodes.
A method of manufacturing an electrodeposition type display apparatus comprising:
- the step of forming transparent pixel electrodes and drive devices on a transparent support structure;
- the step of forming a polymeric solid electrolytic layer containing metal ions and a coloring agent on said transparent support structure having formed said transparent pixel electrodes and said drive devices;
- and the step of forming a common electrode opposed to said transparent pixel electrodes.
Dependencies are inferred from the claim text.