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    • 4. 发明授权
    • Photoselective absorbing filter and color display equipped with said filter
    • 选择性吸收滤光片和配有该过滤器的彩色显示器
    • US06512643B1
    • 2003-01-28
    • US09716070
    • 2000-11-17
    • Atsushi WadaYoshinori Kawasaki
    • Atsushi WadaYoshinori Kawasaki
    • G02B522
    • G02B5/201G02B5/223
    • A photoselective absorbing filter that avoids a decrease in luminance of picture elements and is capable of absorbing reflected light with high efficiency, and a color display device equipped with the photoselective absorbing filter, are disclosed. In a filter of the present invention, the transmittance of light at a wavelength ranging from 470 to 510 nm and at a wavelength ranging from 550 to 600 nm is a value smaller than a transmittance of light at a visible range other than said two wavelength ranges. The photoselective absorbing filter of the present invention contains a coloring material containing (a) a pyridinophthalocyanine selected from the group consisting of metal-tetra-2,3-pyridinoporphyrazine, metal-tetra-3,4-pyridinoporphyrazine, tetra-2,3-pyridinoporphyrazine and tetra-3,4-pyridinoporphyrazine, and (b) an anthraquinone dye. The anthraquinone dye is selected from Solvent Orange (35, 64, 65, 66, 68, 69, 71, 77, 86, and 87) and Solvent Red (52, 152, 155, 156, 168, 169, 170, 171, 172, 175, 177, 181, 190, and 191).
    • 公开了一种避免图像元素的亮度降低并且能够高效吸收反射光的光电吸收滤光器,以及配备有光选吸收滤光器的彩色显示装置。 在本发明的滤光器中,波长470〜510nm,波长550〜600nm的光的透过率,比除了所述两个波长范围以外的可见光范围的光的透射率小 。 本发明的光电吸收滤光器含有着色材料,该着色材料含有(a)选自金属 - 四-2,3-吡啶并吡嗪,金属 - 四-3,4-吡啶并吡嗪,四 - 吡啶并吡嗪和四-3,4-吡啶并吡嗪,和(b)蒽醌染料。 蒽醌染料选自溶剂橙(35,64,65,66,68,69,71,77,86和87)和溶剂红(52,152,155,156,168,169,170,171,154,154,157) 172,175,177,181,190和191)。