Reliability of liquid crystal cell and immiscibility between dual-curable adhesives and liquid crystal
| Autor: | Dae-Soon Park, Hyun-Joong Kim, Young-Jun Park, Ick-Kyung Sung |
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| Rok vydání: | 2010 |
| Předmět: |
Liquid-crystal display
Materials science Polymers and Plastics Bond strength Organic Chemistry General Physics and Astronomy Epoxy law.invention Optical microscope Liquid crystal law visual_art Materials Chemistry visual_art.visual_art_medium Transmittance Adhesive Composite material Curing (chemistry) |
| Zdroj: | European Polymer Journal. 46:1642-1648 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2009.05.034 |
| Popis: | The dual-curable adhesive used to attach thin film transistors (TFTs) to color filters in the construction process of liquid crystal display (LCD) panels requires fast curing by UV irradiation and strong bond strength after thermal-curing. In addition, it is necessary to consider the immiscibility of the dual-curable adhesives with the liquid crystal, because they come directly into contact with the liquid crystal without curing process in the large LCD panel production. In this study, dual-curable adhesives based on partially acrylated epoxy acrylate oligomers were prepared and investigated with nematic liquid crystals using gas chromatography (GC), polarized optical microscopy and the measurement of the transmittance of the liquid crystal. As the concentration of C C bonds was increased, the immiscibility was enhanced due to the fast curing rate of the partially acrylated epoxy acrylate oligomers and reduced visual contamination was observed in the polarized optical microscope images. Moreover, the transmittance of the liquid crystal cells was not changed before and after the dual-curing of the adhesives and was maintained for 100 h. |
| Databáze: | OpenAIRE |
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