E-type Polarizers and Retarders
E-type Polarizers and Retarders
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E型偏振器和延迟器
DOI：
10.1117/12.450933
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发表时间：
2002
期刊：
影响因子：
2.2
通讯作者：
M. Paukshto
中科院分区：
文献类型：
--
作者：
P. Lazarev;M. Paukshto
通过沉积由二向色性染料超分子形成的水基溶致液晶，制备了新型薄膜（TCF）偏振器和延迟器。超分子具有超过100的纵横比，具有“意大利面条状”结构。超分子由盘状芳香分子形成，其自组装成柱状堆叠（或股状）结构。在沉积过程中，施加剪切力，超分子在约10微米厚的湿层中沿剪切力方向沿着。在干燥时，溶致液晶层相变成亚微米TCF功能层，其中二色性染料分子在整个涂覆表面上以相同的方式排列。TCF层可以沉积在包括塑料和玻璃在内的各种材料上。涂层表现出的E型偏振器在波段中的分子表现出吸收和双折射高达0.8的吸收是最小的光谱区域中的属性。为了提高LCD的性能，已经生产和测试了几种类型的TCF偏振器和延迟器。这些薄膜增强了许多类型LCD的对比度、视角性能和显色性。
New Thin Crystal Film (TCF) polarizers and retarders are produced by deposition of water based lyotropic liquid crystals formed by supramolecules of dichroic dyes. The supramolecules have an aspect ratio of more than 100 with a "spaghetti-like" structure. The supramolecules are formed by disk-shaped aromatic molecules that self-assemble into columnar stack (or strand-like) structures. In the course of deposition, shear force is applied and the supramolecules are aligned along the shear force direction in a wet layer about 10 microns thick. While drying, the layer of lyotropic liquid crystal phase-transitions into a sub-micron TCF functional layer with the dichroic dye molecules aligned in the same fashion over the entire coated surface. Layers of TCF can be deposited on a wide variety of materials including plastic and glass. The coatings exhibit properties of an E-type polarizer in wavebands where molecules exhibit absorption and birefringence up to 0.8 in areas of spectra where absorption is minimal. Several types of TCF polarizers and retarders have been produced and tested in order to improve the performance of LCDs. These films enhance the contrast, viewing angle performance and color rendering of many types of LCDs.