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 Choi, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
Life of this patent
Estimating the term…
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.
Claims31
A method for controlling a pretilt angle for an alignment layer of a liquid crystal cell, comprising:
- forming the alignment layer on a substrate surface;
- irradiating the alignment layer with a first ultraviolet light to orient molecules of the alignment layer at first and second pretilt angle directions;
- and
- irradiating the alignment layer with a second ultraviolet light to select between the first and second pretilt angle directions,
- wherein said first ultraviolet light controls the magnitude of said first and second pretilt angles.
A method for controlling a pretilt angle for an alignment layer of a liquid crystal cell, comprising:
- forming the alignment layer on a surface of a substrate;
- irradiating a first ultraviolet light at a first angle relative to normal on the alignment layer for creating a plurality of pretilt angles;
- and
- irradiating a second ultraviolet light at a second angle relative to normal on the alignment layer for selecting a desired pretilt angle,
- wherein said first ultraviolet light controls the magnitude of said first and second pretilt angles.
A method for controlling a pretilt angle for an alignment layer of a liquid crystal cell, comprising:
- forming the alignment layer on a surface of a substrate;
- irradiating a first unpolarized ultraviolet light at a first angle relative to normal on the alignment layer for creating a plurality of pretilt angles;
- and
- irradiating a second linearly polarized ultraviolet light at a second angle relative to normal on the alignment layer for selecting one of the plurality of pretilt angles,
- wherein said first unpolarized ultraviolet light controls the magnitude of said first and second pretilt angles.
Dependencies are inferred from the claim text.