| 摘要 |
A liquid crystal polymer marking is obtainable by a process that comprises applying a first chiral liquid crystal precursor composition unto a substrate, healing the composition to bring same to a first chiral liquid crystal stale, applying to al least one area of the first composition a second chiral liquid crystal precursor composition, healing the at least one area to bring same to a second chiral liquid crystal stale, and subsequently curing and/or polymerizing the resultant product. |
