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Color Filter 수리를 위한 자외성 경화형 잉크 개발
이경균 ( Kyeong Kyun Lee ),이성구 ( Sung Koo Lee ),임은희 ( Eun Hee Lim ) 한국공업화학회 2010 응용화학 Vol.14 No.2
Base on polyester acrylate oligomer UV curable inks were prepared to repair pinhole defects in LCD color filter production. The pinhole defects in color filter are quite common during LCD production covering 1∼2% quality non-confirming fails. The pinholes sometimes refer to while-light specks when a LCD TFT is turn-on state. The formulated UV curable ink repairs those defects by filling a defective sub-pixel using inkjet printing process. Film properties such as curing time dependence, light transmittance characteristics, hardness were analyzed based on UV-cure time, UV-Vis spectroscopy and pencil hardness tester. Correlations between the formulation and inkjet printing behavior were also discussed by real-time ejection monitoring camera.