CN103955115B - 一种感光树脂组合物及彩色滤光片 - Google Patents

一种感光树脂组合物及彩色滤光片 Download PDF

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CN103955115B
CN103955115B CN201410149062.9A CN201410149062A CN103955115B CN 103955115 B CN103955115 B CN 103955115B CN 201410149062 A CN201410149062 A CN 201410149062A CN 103955115 B CN103955115 B CN 103955115B
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CN103955115A (zh
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刘晓那
宋勇志
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Beixu Hubei Electronic Material Co ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
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Abstract

本发明公开了一种感光树脂组合物及彩色滤光片。该感光树脂组合物，包括在所述感光树脂组合物中所占的重量百分比为0.6%‑2%的卤化银、0.06%‑0.7%的氧化剂、9%‑10%的所述碱可溶树脂、3%‑4%的所述光聚合性化合物、0.5%‑5%的所述颜料分散液、0.05%‑0.06%的所述光聚合引发剂、58%‑60%的所述溶剂。该彩色滤光片当置于强紫外光照条件下显示黑色，阻挡紫外线；当置于可见光区域中恢复原始色彩。

Description

一种感光树脂组合物及彩色滤光片
技术领域
本发明涉及一种彩色滤光片技术，尤其涉及一种感光树脂组合物及彩色滤光片。
背景技术
彩色滤光片是液晶显示器实现彩色显示的关键部件。传统彩色滤光片的主要作用是利用红蓝绿三原色，使背光源发出的白光变成彩色，实现彩色显示。彩色滤光片主要由感光树脂组合物制成。现有技术中，感光树脂组合物由颜料、光活性聚合物、光活性单体、环氧树脂、溶剂、光引发剂、表面活性剂及添加剂组成。感光树脂组合物经过成膜工艺制成彩色滤光片。
传统彩色滤光片对紫外光无过滤作用且位于显示屏内部、实现开关作用的液晶材料极其容易受到紫外光的影响而产生老化等问题，从而影响产品品质。因此，在封框胶紫外固化工艺流程中，必需使用掩模板遮挡液晶存在区域，以免紫外对液晶照射，破坏液晶分子结构。掩模板的使用具有以下缺点：（1）掩模板遮光区域为玻璃基板表面一定厚度的金属层，在长时间强紫外照射下，金属层易脱落破损，耗费量巨大；（2）不同尺寸产品，液晶存在区域面积和位置各不相同，因此，每种产品需要单独制作掩模板，进行紫外光遮挡；（3）掩模板是通过真空吸附作用，置于TFT-LCD玻璃上方0～0.3cm位置，掩模板基材和TFT-LCD基材均为玻璃，极易产生静电吸附，导致掩模板脱落，设备无法工作。
发明内容
本发明的目的是提供一种感光树脂组合物及彩色滤光片。
本发明所提供的感光树脂组合物，包括在所述感光树脂组合物中所占的重量百分比为0.6%-2%的卤化银、0.06%-0.7%的氧化剂、9%-10%的所述碱可溶树脂、3%-4%的所述光聚合性化合物、0.5%-5%的所述颜料分散液、0.05%-0.06%的所述光聚合引发剂、58%-60%的所述溶剂。
所述氧化剂选自溴化亚铜二甲硫醚络合物，碘化铜(I)三甲基亚磷酸络合物和碘化铜(I)三乙基亚磷酸络合物中的至少一种。
所述碱可溶性树脂为芳香酸丙烯酸酯、苯乙烯与马来酸酐共聚物、聚氨酯丙烯酸酯、含羟基的聚酯丙烯酸酯或其组合。
所述光聚合性化合物为脂肪族聚氨酯丙烯酸酯、聚醚丙烯酸酯、丙烯酸酯、含羟基的聚酯丙烯酸酯、马来酰亚胺、邻苯二甲酰亚胺或2-羟基-4-邻苯二甲酰亚胺、含羟基的酸、含羟基的酸酐或主链上含有多个甲基苯环氧基团的环氧树脂中的至少一种。
所述颜料分散液，以颜料分散液总重量为100%计，包括10%-11%的颜料、4%-5%的分散剂、8%-9%的粘结型树脂、87%-90%的所述溶剂。
所述光引发剂包括酮肟酯类光引发剂、α-胺基酮类光引发剂、苯乙酮系光引发剂、酰基膦氧化物、芳香酮类光引发剂、芳香硫鎗盐、碘鎗盐或茂铁盐中的至少一种。
所述分散剂为酰胺类聚合物、改性聚亚胺酯聚合物或丙烯酸酯嵌段共聚物。
所述粘结型树脂为环氧树脂。
本发明的另一个目的是提供一种彩色滤光片。
本发明的彩色滤光片，其由所述感光树脂组合物制成。
在本发明的感光树脂组合物中添加有卤化银感光材料和氧化剂。由该感光树脂组合物制成的彩色滤光片当置于强紫外光照条件下，卤化银分解成胶体Ag和卤素，使得彩色滤光片显示黑色，阻挡紫外线；当重置于可见光区域中，胶体Ag和卤素在氧化剂作用下生成无色卤化银，使得彩色滤光片恢复原始色彩。使用该彩色滤光片，一方面可以节约封框胶紫外固化过程中使用的掩模板，另一方面，可以避免生产过程和使用过程中强紫外对液晶的破坏性，提升产品品质和寿命。
具体实施方式
本发明的感光树脂组合物，包括在所述感光树脂组合物中所占的重量百分比为0.6%-2%的卤化银、0.06%-0.7%的氧化剂、9%-10%的所述碱可溶树脂、3%-4%的所述光聚合性化合物、0.5%-5%的所述颜料分散液、0.05%-0.06%的所述光聚合引发剂、58%-60%的所述溶剂。
所述氧化剂选自溴化亚铜二甲硫醚络合物，碘化铜(I)三甲基亚磷酸络合物和碘化铜(I)三乙基亚磷酸络合物中的至少一种。
所述碱可溶性树脂为芳香酸丙烯酸酯、苯乙烯与马来酸酐共聚物、聚氨酯丙烯酸酯、含羟基的聚酯丙烯酸酯或其组合。
所述光聚合性化合物为脂肪族聚氨酯丙烯酸酯、聚醚丙烯酸酯、丙烯酸酯、含羟基的聚酯丙烯酸酯、马来酰亚胺、邻苯二甲酰亚胺或2-羟基-4-邻苯二甲酰亚胺、含羟基的酸、含羟基的酸酐或主链上含有多个甲基苯环氧基团的环氧树脂中的至少一种。
所述颜料分散液，以颜料分散液总重量为100%计，包括10%-11%的颜料、4%-5%的分散剂、8%-9%的粘结型树脂、87%-90%的所述溶剂。
所述光引发剂包括酮肟酯类光引发剂、α-胺基酮类光引发剂、苯乙酮系光引发剂、酰基膦氧化物、芳香酮类光引发剂、芳香硫鎗盐、碘鎗盐或茂铁盐中的至少一种。
所述溶剂可为酸性溶剂、碱性溶剂或中性溶剂。酸性溶剂如甲酸、乙酸、氯仿等。碱性溶剂如酮、酯、醚、某些芳香烃等。中性溶剂如脂肪烃、环烷烃类化合物以及某些芳香烃等，具体可为脂肪醇、乙二醇醚、乙酸乙酯、甲乙酮、甲基异丁基酮、单甲基醚乙二醇酯、Y-丁内酯、丙酸-3-乙醚乙酯、丁基卡必醇、丁基卡必醇醋酸酯、丙二醇单甲基醚、丙二醇单甲基醚醋酸酯、环己酮、二甲苯、异丙醇、正丁醇，其中优选为丙二醇单甲基醚、丙二醇单甲基醚醋酸酯、环己烷、丁基卡必醇、丙酸-3-乙醚乙酯、丁基卡必醇醋酸酯及Y-丁内酯的其中之一或者任意组合。
所述颜料选自红色颜料、黄色颜料、蓝色颜料、绿色颜料、紫色颜料中的一种或多种。颜料的成分没有特别限定，现有有机颜料都可用于上述颜料分散液。优选地，包括以下种类:单偶氮黄色和橙色颜料、双偶氮颜料、萘酚系列颜料、色酚AS系列颜料、偶氮色淀类颜料、苯并咪唑酮颜料、偶氮缩合颜料、酞菁颜料、喹吖啶酮类颜料、硫靛系颜料、蒽醌颜料、二噁嗪颜料、三芳甲烷类颜料、吡咯并吡咯二酮系颜料(DPP系颜料)、喹酞酮类颜料等。更优选地，红色颜料选自如PR224、PR254、PR264、PR122、PR123、PR177、PR179、PR190等；黄色颜料选自如PY1、PY12、PY13、PY83、P Y93、PY95、PY109、PY126、PY138、PY139、PY150、PY174、PY180等；绿色颜料选自如PG36、PG37、PG7、PG58等；蓝色颜料选自如PB1、PB2、PB15、PB15:3、PB15:4、PB15:6、PB16、PB22、PB60等；紫色颜料选自如PV32、PV36、PV38、PV39、PV23、PV等。
所述分散剂为酰胺类聚合物、改性聚亚胺酯聚合物或丙烯酸酯嵌段共聚物。
所述粘结型树脂为环氧树脂。
本发明的彩色滤光片，由所述感光树脂组合物制成。
以下结果具体实施例更好地描述本发明的感光树脂组合物，下述以红色感光树脂为例进行介绍，其他色彩的感光树脂可以根据颜料液选择确定，在此不做限定。
实施例1.红色感光树脂组合物
1.红色颜料液的制备：
a：分散剂BYK200180g、分散树脂238840g、丙二醇甲醚醋酸酯350g混合搅拌1个小时，
b：向步骤a制备的分散液中加入红色颜料PR254100g，搅拌1个小时，
c：向步骤b制备的分散液中加入丙二醇甲醚醋酸酯500g，进行研磨分散2个小时。
2.红色感光树脂组合物的制备：
将上述制备好的颜料液200g、碱可溶树脂SB40175g、感光性树脂DPHA25g、光引发剂3790.5g、溴化银15g、溴化亚铜二甲硫醚络合物5g、丙二醇甲醚醋酸酯450g混合搅拌5个小时，即得到红色感光树脂组合物。
实施例2.红色感光树脂组合物
1.红色颜料液的制备：
a：分散剂BYK200180g、分散树脂238840g、丙二醇甲醚醋酸酯350g混合搅拌1个小时，
b：向步骤a制备的分散液中加入红色颜料PR254100g，搅拌1个小时，
c：向步骤b制备的分散液中加入丙二醇甲醚醋酸酯500g，进行研磨分散2个小时。
2.红色感光树脂组合物的制备：
将上述制备好的颜料液200g、碱可溶树脂SB40175g、感光性树脂DPHA25g、光引发剂3790.5g、溴化银5g、碘化铜(I)三甲基亚磷酸络合物5g、丙二醇甲醚醋酸酯450g混合搅拌5个小时，即得到红色感光树脂组合物。
实施例3.红色感光树脂组合物
1.红色颜料液的制备：
a：分散剂BYK200180g、分散树脂238840g、丙二醇甲醚醋酸酯350g混合搅拌1个小时，
b：向步骤a制备的分散液中加入红色颜料PR254100g，搅拌1个小时，
c：向步骤b制备的分散液中加入丙二醇甲醚醋酸酯500g，进行研磨分散2个小时。
2.红色感光树脂组合物的制备：
将上述制备好的颜料液200g、碱可溶树脂SB40175g、感光性树脂DPHA25g、光引发剂3790.5g、溴化银5g、碘化铜(I)三乙基亚磷酸络合物0.5g、丙二醇甲醚醋酸酯450g混合搅拌5个小时，即得到红色感光树脂组合物。
应用例
使用上述实施例1-3制备的红色感光树脂组合物，按照如下步骤制作彩色滤光片：
步骤1：将所制备感光树脂组合物涂布到玻璃基板上：
步骤2：步骤1获得的玻璃基板在温度150℃下前烘2分钟，再经过曝光能量为100～400mJ/cm2的紫外光曝光：
步骤3：对完成步骤2的玻璃在碱性显影液中显影，再在温度250℃下烘烤30分钟，获得彩色滤光片。
上述制备的彩色滤光片当置于强紫外光照条件下，彩色滤光片显示黑色，阻挡紫外线；当重置于可见光区域中，彩色滤光片恢复原始色彩。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解；其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (9)

1.一种感光树脂组合物，包括在所述感光树脂组合物中所占的重量百分比为0.6％-2％的卤化银、0.06％-0.7％的氧化剂、9％-10％的碱可溶树脂、3％-4％的光聚合性化合物、25％-27％的颜料分散液、0.05％-0.06％的光聚合引发剂、58％-60％的溶剂。
2.根据权利要求1所述的感光树脂组合物，其特征在于，所述氧化剂选自溴化亚铜二甲硫醚络合物，碘化铜(I)三甲基亚磷酸络合物和碘化铜(I)三乙基亚磷酸络合物中的至少一种。
3.根据权利要求1所述的感光树脂组合物，其特征在于，所述碱可溶性树脂为芳香酸丙烯酸酯、苯乙烯与马来酸酐共聚物、聚氨酯丙烯酸酯、含羟基的聚酯丙烯酸酯或其组合。
4.根据权利要求1所述的感光树脂组合物，其特征在于，所述光聚合性化合物为脂肪族聚氨酯丙烯酸酯、聚醚丙烯酸酯、丙烯酸酯、含羟基的聚酯丙烯酸酯、马来酰亚胺、邻苯二甲酰亚胺或2-羟基-4-邻苯二甲酰亚胺、含羟基的酸、含羟基的酸酐或主链上含有多个甲基苯环氧基团的环氧树脂中的至少一种。
5.根据权利要求1所述的感光树脂组合物，其特征在于，所述颜料分散液，以颜料分散液总重量为100％计，包括10％-11％的颜料、4％-5％的分散剂、8％-9％的粘结型树脂、87％-90％的所述溶剂。
6.根据权利要求1所述的感光树脂组合物，其特征在于，所述光引发剂包括酮肟酯类光引发剂、α-胺基酮类光引发剂、苯乙酮系光引发剂、酰基膦氧化物、芳香酮类光引发剂或茂铁盐中的至少一种。
7.根据权利要求5所述的感光树脂组合物，其特征在于，所述分散剂为酰胺类聚合物、改性聚亚胺酯聚合物或丙烯酸酯嵌段共聚物。
8.根据权利要求5所述的感光树脂组合物，其特征在于，所述粘结型树脂为环氧树脂。
9.一种彩色滤光片，其由权利要求1-8中任一所述的感光树脂组合物制成。
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