Lee Ji-Hoon, Jeong Il Hwa, Yu Ji Hoon, Song Ki Hoon, Jeong Kwang-Un, Kang Shin-Woong, Lee Myoung-Hoon, Lee Seung Hee
Opt Express. 2014 Jun 16;22(12):15315-9. doi: 10.1364/OE.22.015315.
Conventional film patterned retarder (FPR) production requires a photo-alignment layer and a UV exposure process through a patterned wire-grid photo-mask, increasing the cost as well as limiting the resolution of FPR. We proposed a novel method for the fabrication of FPR without using the alignment layer and the photo-mask. Reactive mesogen (RM) was coated on a base film, and then the substrate with 2-domain interdigitated electrodes was contacted over the RM layer. The in-plane electric field reoriented the randomly orientated RM molecules to the field direction, generating the slow axes in each domain. Then, the UV light was exposed to the film, fixing the slow axes of the polymerized RM with orthogonal orientation between neighboring domains. Finally, an incident linearly polarized light gave rise to giving oppositely handed circular polarizations of light after passing the film.
传统的薄膜图案化延迟器（FPR）生产需要一个光对准层以及通过图案化线栅光掩模的紫外线曝光工艺，这增加了成本并限制了FPR的分辨率。我们提出了一种无需使用对准层和光掩模来制造FPR的新方法。将反应性液晶基元（RM）涂覆在基膜上，然后将带有两畴叉指电极的基板与RM层接触。面内电场将随机取向的RM分子重新定向到电场方向，在每个畴中产生慢轴。然后，将紫外线照射到薄膜上，固定聚合RM的慢轴，使其在相邻畴之间具有正交取向。最后，一束入射的线偏振光在通过薄膜后产生相反旋向的圆偏振光。
