Method for controlling pretilt angle direction in a liquid crystal cell
AssigneeLG.Philips LCD Co., Ltd.
InventorsYuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Chol, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
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Abstract
A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
Claims21
A method for controlling a pretilt angle direction for an alignment layer of a liquid crystal cell, comprising the steps of:
- irradiating said alignment layer on a substrate surface a first time with non-linearly polarized ultraviolet light to orient molecules of said alignment layer in a large number pretilt angle direction, the pretilt angle directions forming pretilt angles, respectively, relative to a direction parallel to said substrate surface;
- and
- irradiating said alignment layer a second time with linearly polarized ultraviolet light to select one direction of said pretilt angle directions.
A method for controlling a pretilt angle direction for an alignment layer of a liquid crystal cell, comprising the steps of:
- irradiating said alignment layer on a substrate surface a first time with linearly polarized ultraviolet light to orient molecules of said alignment layer in first and second pretilt angle directions, said first and second pretilt angle directions forming first and second pretilt angles, respectively, relative to a direction parallel to said substrate surface;
- and
- irradiating said alignment layer a second time with non-linearly polarized ultraviolet light to select one direction of said first and second pretilt angle directions.
Dependencies are inferred from the claim text.