公开(公告)号：US20020191945A1

公开(公告)日：2002-12-19

申请号：US10216413

申请日：2002-08-09

Applicant: U.S. PHILIPS CORPORATION

Inventor： Peter Van De Witte ,  Johan Lub

IPC: G02B006/00 ,  C08G063/78

CPC classification number: G02B5/201 ,  G02B5/3016 ,  G02F1/133516 ,  G02F2001/133543

Abstract: The invention relates to a method of manufacturing a patterned layer of a polymer material having a cholesteric order, in which the material is oriented in such a way that the axis of the molecular helix of the cholesterically ordered material extends transversely to the layer, and in which the layer is patterned in that it comprises at least one region in which the pitch of the molecular helix differs from that of another region. This inventive method comprises the following steps: a. providing a layer of a cholesterically ordered material comprising a quantity of a convertible compound which in its non-converted and in its converted state determines the pitch of the cholesterically ordered material to a different extent, in which the conversion of said compound may be induced by radiation, b. irradiating the layer in accordance with a desired pattern so that at least a part of the convertible compound in the irradiated parts of the layer is converted, c. polymerizing and/or crosslinking the cholesterically ordered material to form a three-dimensional polymer. The convertible compound preferably comprises an isomerizable, chiral compound. Polymerization and/or crosslinking are preferably induced by irradiation using electron-beam radiation or actinic radiation.

Abstract translation: 本发明涉及一种制造具有胆甾醇阶数的聚合物材料的图案化层的方法，其中材料以这样一种方式取向，使得胆甾醇排序材料的分子螺旋的轴线横向于该层延伸，并且在 其层被图案化，因为它包括其中分子螺旋的间距与另一区域的间距不同的至少一个区域。 本发明方法包括以下步骤：a。 提供一层胆甾醇排序的材料，其包含一定量的可转化化合物，其在其未转化和转化状态下以不同程度确定胆甾醇排序材料的沥青，其中所述化合物的转化可以由 辐射，b。 c。根据期望的图案照射该层，使得该层的照射部分中的可转换化合物的至少一部分被转化，c。 聚合和/或交联胆甾醇排序的材料以形成三维聚合物。 可转化化合物优选包含可异构化的手性化合物。 聚合和/或交联优选通过使用电子束辐射或光化辐射的照射来诱导。