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DISPLAY ELEMENT AND DISPLAY DEVICE USING SAME NEW_EN

Foreign code F190009985
File No. (S2018-0444-N0)
Posted date Oct 28, 2019
Country WIPO
International application number 2019JP008187
International publication number WO 2019172139
Date of international filing Mar 1, 2019
Date of international publication Sep 12, 2019
Priority data
  • P2018-038407 (Mar 5, 2018) JP
Title DISPLAY ELEMENT AND DISPLAY DEVICE USING SAME NEW_EN
Abstract [Problem] To provide a display element capable of reversibly changing states of transparency, a plurality of coloring, and light emission with a single display element by varying an application voltage.
[Solution] To address the problem described above, a display element according to one aspect of the present invention comprises a first electrode, a second electrode, an electrolyte held between the first electrode and the second electrode, and a voltage application means capable of applying a voltage between the first electrode and the second electrode, with the electrolyte containing an electrochromic material and a blue emission material. A display element according to another aspect of the present invention comprises a first electrode, a second electrode, an electrolyte held between the first electrode and the second electrode, and a voltage application means capable of applying a voltage between the first electrode and the second electrode, with the electrolyte containing a silver compound and DPA.
Outline of related art and contending technology BACKGROUND ART
Of the display element is expected as an electric chemical reaction, electrochemical reaction (ECL) the light-emitting and light-emitting, electro-colored reaction (EC) has been known. Patent Document 1 is, as the material of the ECL Ru (bpy) 3 well known in the 2 + Complex and an organic EC material may be incorporated into a single device, a monochromatic light emitting display by applying an AC voltage by the ECL, the DC voltage applied to the control of the EC by a single color by the reflective display is realized.
Non-Patent Document 1 from the technique described in Non-Patent Document 4, the above-described conventional technique 1 cannot be realized by a plurality of colors for the purpose of realization of the reflective display, based on the electrolytic deposition of the Ag particles of interest in the EC reaction. As a result, Ru (bpy) 3 in a single element ECL reaction Ag + 2 + of the light emission based on electrolytic deposition reaction of the EC display device capable of controlling the color of a plurality of colors can be constructed and realized.
Scope of claims (In Japanese)[請求項1]
 第1の電極と、第2の電極と、第1の電極及び第2の電極の間に保持された電解液と、第1の電極と第2の電極の間に電圧を印加することができる電圧印加手段とを備え、前記電解液は、エレクトロクロミック材料及び青色発光材料を含有する表示素子。

[請求項2]
 第1の電極と、第2の電極と、第1の電極及び第2の電極の間に保持された電解液と、第1の電極と第2の電極の間に電圧を印加することができる電圧印加手段とを備え、前記電解液は、エレクトロクロミック材料及びDPAを含有する表示素子。

[請求項3]
 前記電解液中の前記DPAの濃度を、1mM以上としたことを特徴とする請求項2記載の表示素子。

[請求項4]
 前記電圧印加手段が、前記第1の電極と前記第2の電極の間に交流電圧を印加することができることを特徴とする請求項1に記載の表示素子。

[請求項5]
 前記電圧印加手段が、前記第1の電極と前記第2の電極の間にステップ電圧を印加することができることを特徴とする請求項4に記載の表示素子。

[請求項6]
 前記エレクトロクロミック材料が、銀化合物又は銀イオンを含有することを特徴とする請求項1に記載の表示素子。

[請求項7]
 前記銀化合物又は銀イオンの濃度が、10mM以上200mM以下であることを特徴とする請求項6記載の表示素子。

[請求項8]
 前記表示素子の表面に発光材料含有フィルムを貼ったことを特徴とする請求項1記載の表示素子。

[請求項9]
 請求項8に記載の第1の表示素子と、第1の表示素子とは異なる色に発光する発光材料含有フィルムを表面に貼った請求項8に記載の第2の表示素子を並置したことを特徴とする表示装置。
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
  • Inventor
  • KOBAYASHI Norihisa
  • TSUNEYASU Shota
  • NAKAMURA Kazuki
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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