LC Photoalignment on Plastic Substrates

LC alignment on plastic substrates is really an issue, as the usual rubbed PI requires a very high imidization temperature ( 250 °C) which is incompatible with the 

To maintain a uniform cell gap of 8 jtm (second Mauguin minimum of MLC-6809-000 Merck LC mixture), semi-dry adhesive spacers were chosen. The electro-optical performance of the photoaligned plastic display was very similar to a 

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