Until recently, it has been thought that for LCD fabrication it was necessary to coat an LC alignment film, such as a polyimide (PI) film, on the substrate before filling the LC material. Generally, plastic substrates for flexible displays are incompatible with the thermal processes for curing a PI layer after the coating process on the substrate. Recently, LC alignment techniques that do not require a PI layer have been proposed. In this chapter, the slit coater method as a PI-free LC alignment technique is introduced.
New alignment process and its application, Page 1 of 2
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