Synthesis and Properties of Photopolymer for Negative Optical Retarder Film
발표자
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초록
내용
As a method of aligning the liquid crystal, there are a rubbing method and a photo-alignment method. Among them, the rubbing method is not suitable for application to the current industry due to several problems. Currently, many studies have been performed on photo-alignment, and the problem of the rubbing method has been overcome by using the Hg LPUV process and a photo-alignment material containing cinnamate. However, the above materials and methods have raised problems in terms of thermal resistance, thermal alignment stability, and productivity. In this study, to improve thermal resistance, thermal stability, and liquid crystal alignment ratio, a photo-alignment material containing a chalcone-based derivative was synthesized. In addition, the Pulse LPUV process with the pulse effect was used to solve the problems of low quality and productivity of the existing Hg LPUV process, and the possibility of high-quality optical retarder film manufacturing and mass production was evaluated.