Color filter, manufacture method thereof, and liquid crystal display unit
A manufacturing method and technology of color filters, which are applied in the direction of optical filters, photoplate making process of pattern surface, instruments, etc., can solve problems such as unevenness of color filters, reduction of production rate and cost, time-consuming and labor-intensive, etc., and achieve simple cost , low cost effect
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[0289] In the preparation of the photosensitive coloring composition, as the binder polymer, it is preferable to further add the following epoxy resin in addition to the above-mentioned alkali-soluble resin. Examples of epoxy resins include compounds having two or more epoxy rings in the molecule, such as bisphenol A epoxy resins, cresol novolac epoxy resins, biphenyl epoxy resins, and alicyclic epoxy compounds. .
[0290]For example, as bisphenol A epoxy resins, EPOTOHTO YD-115, YD-118T, YD-127, YD-128, YD-134, YD-8125, YD-7011R, ZX-1059, YDF-8170, YDF-170, etc. (all made by Toto Chemical Co., Ltd.), DENACOLEX-1101, EX-1102, EX-1103, etc. (all made by Nagase Chemical Co., Ltd.), PLACCEL GL-61, GL-62, G101, G102 (all are manufactured by Daicel Chemical Industry Co., Ltd.), etc. In addition, as epoxy resins that can be used, bisphenol F type epoxy resins and bisphenol S type epoxy resins similar to them can also be cited.
[0291] In addition, epoxy acrylates such as Ebecryl 3700, ...
Example Embodiment
[0440] [Example 1]
[0441]
[0442] -Preparation of carbon black dispersion (K-1)-
[0443] The carbon black dispersion liquid (K-1) was prepared according to the following recipe.
[0444] Carbon black (COLOR BLACK FW2 manufactured by Degussa) 26.7 parts
[0445] Dispersant (DISPARLON DA7500 made by Kusumoto Chemical, acid value 26, amine value 40)
[0446] ...3.3 copies
[0447] · Benzyl methacrylate / methacrylic acid (=72 / 28[molar ratio]) copolymer (molecular weight 30,000, 50% by mass solution of propylene glycol monomethyl ether acetate)
[0448] ...10 servings
[0449] ·Propylene glycol monomethyl ether acetate ...60 parts
[0450] The above-mentioned components were stirred for 1 hour using a homogenizer under the condition of 3000 rpm. The obtained mixed solution was microdispersed for 8 hours in a bead disperser (trade name: DESPERMAT, manufactured by GETZMANN) u...
Example
[0606] [Example 2 to Example 5, Comparative Example 2]
[0607] In addition to the film thickness of the resin black matrix and the cone length L B , Green pattern film thickness, cone length L C And the overlapping part O Y The length of L O Except for changing as shown in Table 2, a color filter and a liquid crystal display device were produced in the same manner as in Example 1, and the same evaluation as in Example 1 was performed. The evaluation results are shown in Table 2.
[0608] In detail, the film thickness of the resin black matrix is changed by adjusting the ejection amount of the slit coater, and the taper length L is changed by adjusting the developing time of the developing device. B .
[0609] In addition, the film thickness of the green pattern is changed by adjusting the ejection amount of the slit coater, and the taper length L is changed by adjusting the developing time of the developing device. C , By adjusting the exposure time of the exposure device to ch...
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