エレクトロクロミック化合物、エレクトロクロミック組成物、及び表示素子

摘要

PROBLEM TO BE SOLVED: To provide an electrochromic display element showing sharp light absorption spectral characteristics when a color is developed, and having little coloring when the color is erased.SOLUTION: This invention relates to a composition having an electrochromic compound represented by formula (I).