| 초록 |
One of the characteristics of VA mode in the LCD is that the liquid crystal is arranged on the alignment layer in vertical direction when the polyimide containing high density of side chain is used. In VA mode, photo-alignment method using RM (reactive mesogen) has been widely investigated during the last decade. When the liquid crystal is tilted along with the applied electric field, the photo-polymerization of RM can keep the tilted state of liquid crystal, and then, when electric field is removed, the pre-tilted liquid crystal will be formed. The pre-tilted liquid crystal shows considerably improved response time. In this study, we synthesized and characterized a new photosensitive polyimide alignment layer containing the photosensitive side chain as well as vertical alignment side chain for VA mode LCD. Because this new photosensitive polyimide alignment layer does not require RM, the production of LCD will be fast, simple and effective. |
