α형 디케토피롤로피롤 안료, 그것을 이용한 착색 조성물,및 적색 착색막
    2.
    发明公开
    α형 디케토피롤로피롤 안료, 그것을 이용한 착색 조성물,및 적색 착색막 有权
    ALPHA; - 异丁烯衍生物颜料,含有它们的着色组合物和红膜

    公开(公告)号:KR1020080093114A

    公开(公告)日:2008-10-20

    申请号:KR1020087018801

    申请日:2007-10-01

    Abstract: An alpha-diketopyrrolopyrrole pigment characterized by giving an X-ray diffraction spectrum in which the ratio of the peak density (I020) for the plane index (020) to the peak intensity (I-141) for the plane index (-141), I020/I-141, is 0.40 or lower and the ratio of the peak density (I-141) for the plane index (-141) to the peak intensity (I111) for the plane index (111), I-141/I111, is 1.28 or lower. Also provided are: a coloring composition containing this pigment; and a red film formed with this coloring composition. In a color filter formed with the alpha-diketopyrrolopyrrole pigment, which has that property, the red filter segments have a high contrast ratio and a small absolute value of birefringence. Consequently, a color liquid-crystal display or the like having a small viewing-angle dependence and showing excellent display characteristics can be produced.

    Abstract translation: 其特征在于,给出X射线衍射光谱,其中平面指数(020)的峰值密度(I020)与平面指数(-141)的峰值强度(I-141)的比率, I020 / I-141为0.40以下,平面指数(-141)的峰值密度(I-141)与平面指数(111)的峰值强度(I111)的比值,I-141 / I111 ,为1.28以下。 还提供:含有该颜料的着色组合物; 和由该着色组合物形成的红色膜。 在由具有该性质的α-二酮吡咯并吡咯颜料形成的滤色器中,红色滤光片段具有高对比度和小的双折射绝对值。 因此,可以产生视角依赖性小且显示出优异的显示特性的彩色液晶显示器等。

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