An object of the invention is to provide a coloring composition which can form a light absorption anisotropic film having an excellent dichroic ratio, a dichroic dye compound, a light absorption anisotropic film, a laminate, and an image display device. A coloring composition according to the invention contains a dichroic dye compound which has a Hansen solubility parameter of 17.5 or greater and has a structure represented by Formula (1), and a liquid crystalline compound.
L1-A1-N═N-A2-N═N-A3-L2 (1)
in Formula (1), A1, A2, and A3 each independently represent a divalent aromatic group which may have a substituent. Any one of A1, A2, and A3 represents a divalent thienothiazole group which may have a substituent. In Formula (1), L1 and L2 each independently represent a substituent.
本发明的目的是提供一种可形成具有优异二向色比率的光吸收各向异性膜的着色组合物、一种二向色
染料化合物、一种光吸收各向异性膜、一种层压板和一种图像显示装置。根据本发明的着色组合物包含一种汉森溶解度参数大于或等于 17.5 且结构如式(1)所示的二色性
染料化合物和一种液晶化合物。
l1-a1-n═n-a2-n═n-a3-
L2 (1)
式(1)中,A1、A2 和 A3 各自独立地代表一个二价芳香基团,该芳香基团可具有一个取代基。A1、A2 和 A3 中的任一个代表可具有取代基的二价
噻吩噻唑基团。在式(1)中,L1 和
L2 各自独立地代表一个取代基。