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    • 2. 发明授权
    • Control of liquid crystal alignment in an optical device
    • 控制光学装置中的液晶对准
    • US07375784B2
    • 2008-05-20
    • US11072563
    • 2005-03-04
    • Nathan SmithPaul A. GassJonathan P. BrambleMartin D. TillinBronje M. Musgrave
    • Nathan SmithPaul A. GassJonathan P. BrambleMartin D. TillinBronje M. Musgrave
    • G02F1/1337
    • G02F1/133753G02B5/3016G02F1/1391G02F1/1395G02F2001/133738G02F2001/133742G02F2001/133757G02F2001/133761G02F2001/13787G02F2001/294
    • A method is provided that allows simultaneous control of macroscopic azimuthal and zenithal liquid crystal alignment (φ, θ) across a liquid crystal layer by controlling the area ratios between first, second and third different types of alignment region (T1, T2, T3) in a patterned alignment layer, the three different types of alignment region (T1, T2, T3) tending to induce liquid crystal alignment in the liquid crystal layer in three different respective, non-coplanar, principal orientations (z, x, y). In the illustrated example, the first type of alignment region (T1) tends to induce substantially homeotropic alignment (in the z direction) and the second and third types of alignment region (T2, T3) tend to induce substantially planar alignment in different, orthogonal, principal orientations (in the x and y directions). Control of macroscopic zenithal liquid crystal alignment (θ) is achieved by controlling the area ratios between the homeotropic (T1) and planar region types (T2, T3), and control of macroscopic azimuthal liquid crystal alignment (φ) is achieved by controlling the area ratio between the two planar region types (T2, T3).
    • 提供了一种方法,其通过控制第一,第二和第三不同类型的取向区域(T 1,T 2,T)之间的面积比,允许跨液晶层同时控制宏观方位角和天顶液晶取向(phi,θ) 3)在图案化取向层中,三种不同类型的取向区域(T 1,T 2,T 3)倾向于在三个不同的相应非共面主取向(z,3)中诱导液晶层中的液晶取向, x,y)。 在所示示例中,第一类型的对准区域(T 1)倾向于引起基本上的垂直取向(在z方向上),并且第二和第三类型的取向区域(T 2,T 3)倾向于引起基本上平面的对准 不同的,正交的,主要的方向(在x和y方向)。 通过控制垂直(T 1)和平面区域类型(T 2,T 3)之间的面积比来实现宏观天顶液晶取向(θ)的控制,并且宏观方位角液晶取向(phi)的控制通过 控制两个平面区域类型(T 2,T 3)之间的面积比。