Color filter and liquid crystal display device employing the same
A color filter and coloring layer technology, which is applied to photosensitive materials, instruments, and optical filters used in optomechanical equipment, can solve the problems of unclear image display quality and durability, and achieve excellent black compactness and no color luster Effects of non-uniformity and high display performance
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preparation example Construction
[0130] The preparation conditions of the organic pigment solution are not particularly limited, and the range of normal pressure to subcritical and supercritical conditions can be selected. The temperature under normal pressure is preferably -10 to 150°C, more preferably -5 to 130°C, and particularly preferably 0 to 100°C.
[0131] Here, the solvents listed as specific examples of good solvents and the solvents listed as poor solvents have the same solvents, but the same solvents are not used in combination with the good solvents and poor solvents. In relation to this, the solubility of the organic pigment in a good solvent may be greater than the solubility of the organic pigment in a poor solvent. For example, the difference in solubility between them is preferably 0.2% by mass or more, and more preferably 0.5% by mass or more. There is no particular upper limit for the difference in solubility of an organic pigment in a good solvent and a poor solvent, but in terms of organic ...
Embodiment 1
[0400]
[0401] [Preparation of concentrated pigment liquid A]
[0402] To 1000ml of dimethyl sulfoxide (manufactured by Wako Pure Chemical Industries, Ltd.), add 31.5ml of sodium methoxide 30% methanol solution, 30g of pigment CI Pigment Red 254 (Irgaphor RedBT-CF, trade name, チバ·スペシヤルテイケミカルズ ( Co., Ltd.), the pigment solution A was prepared. At the same time, 1,000 ml of water containing 30 ml of 1 mol / l hydrochloric acid aqueous solution (manufactured by Wako Pure Chemical Industries, Ltd.) as a poor solvent was separately prepared.
[0403] At this time, the temperature was controlled to 18C, and NP-KX was used in 1200ml of poor solvent-water which was stirred at 400rpm using GK-0222-10 Rammond Ster-La- (trade name, manufactured by Fujisawa Pharmaceutical Co., Ltd.) -500 type large-capacity non-pulsation pump (trade name, manufactured by Japan Fine Chemicals Co., Ltd.) at a flow rate of 150ml / min to inject 100ml of pigment solution A to form organic pigment particles and make p...
Embodiment 2
[0513]
[0514] Except that it was changed to 1000ml dimethyl sulfoxide (produced by Wako Pure Chemical Industries, Ltd.) in Example 1, 31.5ml of sodium methoxide 30% methanol solution and 30g of pigment CI Pigment Red 254 (Irgaphor Red BT-CF, The product name is the product name of Baba Subaru Teikomikalus Co., Ltd., and 100 g of polyvinylpyrrolidone (K-30, product name, produced by Wako Pure Chemical Industries, Ltd.), except that the pigment solution A'is prepared, and the rest is the same as in Example 1, and the preparation is R Pigment dispersion B, color filter B1 was produced. As in Example 1, the Df of R pigment dispersion B was measured. The results are shown in Table 2-1 below. As in Example 1, Δx, P and Dp of the color filter B1 were measured. The results are shown in Table 2-2 below.
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