Reactive liquid crystal materials for optically anisotropic patterned retarders

Patterned retarder films using reactive mesogen technology

“…These have been outlined in greater details elsewhere 14 1. Thermal patterning , but can be divided into the following methods:-…”

P‐138: Electrohydrodynamic Patterning Method of Liquid Crystalline Polymer for Patterned Retarder

“…The liquid crystalline polymers (LCPs) have attracted great interests for various optical devices due to their large optical anisotropy and excellent processibility [1][2][3][4][5][6]. In general, the LCP is uniformly aligned by conventional alignment layers used for aligning the liquid crystals (LCs) and thus the optic axis of the LCP is easily controlled by a rubbing process.…”

“…In addition, the phase retardation is directly governed by the thickness of the LCP film which is easily controlled by spinning speed and/or amount of solvent. Due to these fascinated advantages, the LCPs have been applied to the variety of the optical devices such as a patterned retarder film, LC lens, gratings, and polarization rotators [1][2][3][4][5][6]. Especially, the patterned retarders have attracted much attention in the three-dimensional (3D) displays and the transflective LC displays.…”

“…The patterned retarders were fabricated with spatially selective polymerization of the anisotropic materials such as the LCPs. To pattern the LCPs, various methods such as a thermal patterning method and a solvent washing method were proposed [1]. Here, the key issue is a method forming the isotropic regions without phase retardation.…”

Wafer-Level Hybrid Integration of Complex Micro-Optical Modules

“…Further material combinations can be used, one proposal being the implementation of UV curing/photopatternable birefringent liquid-crystal polymer layers [23]. Glass substrates with polarizers [24] can be integrated, i.e., for sensor applications.…”