Abstract
Novel photosensitive alignment materials based on allyl-cinnamate-grafted methyl hydrogen polysiloxane fluid (MHPF) were used in fabricating liquid crystal (LC) cells by sandwiching nematic LC molecules between two indium-tin-oxide (ITO) patterned substrates. The LC aligning ability of this kind of alignment layer, fabricated by linearly polarized UV-induced polymerization (LPP), was characterized based on polarizing microscopic and conoscopic observations. The influences of the thickness of LPP films, LC materials, different end groups, baking conditions and exposure conditions on the alignment and thermal stability are discussed in detail. The results confirmed that the photoalignment films exhibited not only good aligning ability but also excellent thermal stability.
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