彩色濾光片修補液的製備與應用

Abstract

彩色濾光片修補液(repair ink)主要目的是將彩色濾光片(color filter)基板在製程中產生的白欠陷(或黑欠陷)，以雷射去除缺陷後，使用特殊的彩色光阻(修補液)進行填補，將不良品修補為良品，以提高彩色濾光片產品的良率。現行之彩色濾光片修補液，大部分使用具揮發性質的溶劑(如Propyleneglycol monomethylether acetate；PMA)進行配製。本論文研究重心提出減少修補液溶劑以達到無溶劑修補液(solvent-free)的目標，以符合現今綠色環保潮流，同時去除高溫固化製程達到降低製程成本之目的。實驗中將以色漿開發、單體、起始劑、添加劑之選用及配比調整、修補液特性調整(如黏度、流動性、揮發度等) 與UV反應性並達到分散良好且色彩飽滿之色漿。本計畫之成果除可降低溶劑揮發對環境之傷害，並可有效達到降低製程成本之目的，促進彩色濾光片修補液在彩色濾光片上的應用與發展。

Repair Ink Technology is to repair the defect color filter substrate in order to increase the production yield during the manufacture process. The White or Black defects occur during the color filter process. The defect area can be removed by laser. The void space is filled with repair ink to match up the surrounding color sub-pixel. Nowadays, most of the repair inks are composed of organic solvents (such as: Propyleneglycol monomethylether acetate; PMA). The solvent reduction is an important trend for environment friendly process. At the same time, the cost will be reduced by removing high-temperature curing process. In this thesis, we focused on the solvent-free repair ink development. The various types of monomer, photo-initiator, and additives were applied to adjust the repair inks’ properties. The optical and physical properties were examined after UV curing process to fit the production quality control requirements. The experimental results suggested that the solvent-free repair ink is not only reducing the production cost, but also contributing to the environmental friendly process.