THESIS
2010
xvi, 116 p. : ill. (some col.) ; 30 cm
Abstract
The study of inhomogeneous surfaces for liquid crystal alignment has witnessed a
rapid growth in recent years. Such alignment is capable of generating high pretilt angles for
liquid crystal. Several experiments showed that high pretilt angles could be applied to
different applications such as multi-stable displays and No Bias Bend fast response time
displays. This type of alignment layer is also capable of generating spatial pretilt angles for
liquid crystal. It is an effective way to apply to some optical elements or some waveguide
devices such prism and lens.
Base on the stacked alignment, a new method for generating spatial pretilt angles is
developed. It is based on stacking both photo-aligned polymer and rubbed polyimide together
and through controlling the UV dosage of th...[
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The study of inhomogeneous surfaces for liquid crystal alignment has witnessed a
rapid growth in recent years. Such alignment is capable of generating high pretilt angles for
liquid crystal. Several experiments showed that high pretilt angles could be applied to
different applications such as multi-stable displays and No Bias Bend fast response time
displays. This type of alignment layer is also capable of generating spatial pretilt angles for
liquid crystal. It is an effective way to apply to some optical elements or some waveguide
devices such prism and lens.
Base on the stacked alignment, a new method for generating spatial pretilt angles is
developed. It is based on stacking both photo-aligned polymer and rubbed polyimide together
and through controlling the UV dosage of the photo-aligned polymer to design the pretilt
angle profile. Base on this new alignment layer structure, a liquid crystal variable-focus lens
is designed and it is suitable for large area fabrication.
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