Abstract
AbstractIn this paper, an advanced optical thin film structure, which can be used for fabricating multidomain display is introduced. It is composed of multilayer patterned birefringent thin films, of which each thin film is formed by a liquid crystal (LC) polymer layer with spatially varying optical axes controlled by a patterned photoalignment layer so that it can spatially modulate light propagation directions and polarizations. The overall thickness of the multilayer films, excluding the substrate, can be less than 1 µm, which offers the flexibility to generate high resolution light wavefront structure and the light diffraction within the film is also suppressed. As a result, the optical thin film can be ideally working as a photomask for exposure on a LC photoalignment layer to generate multidomain alignment structures in a single exposure, which can be applied for the manufacturing of LC multidomain displays. To verify the effectiveness of the proposed photomask, a periodic two‐domain thin film structure has been designed and fabricated and a liquid crystal cell with two‐domain alignment structure has been successfully fabricated in a single exposure with the photomask.
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