4.6 Article

Command splay-bend switching in an optically-compensated bend cell with polymerized liquid crystal photoalignment layers

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JOURNAL OF APPLIED PHYSICS
卷 121, 期 11, 页码 -

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AMER INST PHYSICS
DOI: 10.1063/1.4978385

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  1. Thorlabs China, Shanghai
  2. DIC Corporation
  3. Ohio Research Center of Self-Assembled Material (RC-SAM)
  4. Liquid Crystal Institute
  5. Kent State University

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We demonstrate a fast-switching optically compensated bend (OCB) mode with polymerized liquid crystal photoalignment (PAL). The polymerized liquid crystal PAL is achieved by spin coating a mixture of reactive mesogens and a photoinitiator and polymerizing it with ultraviolet (UV) light on top of the PAL material, which is illuminated with linear-polarized ultraviolet light to introduce anisotropy and a pretilt angle for liquid crystal alignment. The experimental results show the dependency of the electro-optical properties of OCB cells on the morphology-modulated surface anchoring of polymerized liquid crystal PAL. Furthermore, the polymerized liquid crystal PAL exhibits superior stability against UV exposure and thermal stress, which makes PAL applicable in spatial light modulator application.

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