Color filter and liquid crystal display device
AssigneeToray Industries, Inc.
InventorsTetsuo Yamashita, Jun Tsukamoto
Life of this patent
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Abstract
By preparing a color filter including blue dots whose chromaticity coordinates (z, Z) in the XYZ colorimetric system, measured with CIE standard light source C, satisfy the relational expressions 114>Z>−1087023z4+3205105z3−3545958z2+1744329z−321773 and 0.73≦z≦0.81, a color filter exhibiting an excellent color reproducibility and a high transmittance can be realized and thus a liquid crystal display device capable of displaying as colorful images as in CRT television sets can be achieved.
Claims5
A color filter comprising blue dots whose chromaticity coordinates (z, Z) in the XYZ colorimetric system, measured with CIE standard light source C, satisfy the relational expressions 114>Z>−1087023z4+3205105z3−3545958z2+1744329z−321773 and 0.730≦z≦0.810.
A color filter comprising blue dots containing Pigment Blue 15:6 (PB15:6) and Pigment Violet 23 (PV23) such that the weight ratio of PB15:6 to PV23 is in the range of 96/4 to 70/30, the blue dots having a chromaticity coordinate z in the XYZ colorimetric system, measured with CIE standard light source C, satisfying 0.73≦z≦0.81.
Dependencies are inferred from the claim text.