Liquid crystal device comprising a second orientation control element constituted by an assembly of distinct plural orientation control elements formed between adjacent repetitions of a first orientation control element
View Patent ↗A slit pattern, which is an orientation control element extending in an oblique direction relative to an edge of a pixel electrode on a surface of a TFT substrate, is formed in the pixel electrode to extend in a substantially parallel direction to an extending direction of a bank-shaped pattern. Furthermore, as an orientation control element, fine slit patterns (concave portions in the pixel electrode) are formed locally in a part near the edge of the pixel electrode except in the pixel electrode to extend in an oblique direction relative to an extending direction of the edge.
1. A liquid crystal display device comprising:
a first substrate having thereon a pixel electrode and an active element;
a second substrate having thereon an opposed electrode; and
a liquid crystal layer interposed between said first and second substrates with said electrodes facing each other,
wherein a first orientation control element extending in a nonparallel direction relative to an extending direction of an edge of said pixel electrode and a second orientation control element extending in a parallel direction relative to an extending direction of said edge are provided on at least one of said first and second substrates,
wherein said second orientation control element is constituted by an assembly of distinct plural orientation control elements having a same directivity in a direction of the substrate's plane surface, and
wherein said assembly is entirely formed between adjacent repetitions of said first orientation control element.
2. The device according to claim 1 , wherein said second orientation control element is formed to extend in an outer direction from said first orientation control element which is adjacent to said second orientation control element on the same substrate.
3. The device according to claim 1 , wherein at least one of said first and second orientation control elements is a slit formed in said pixel electrode or said opposed electrode.
4. The device according to claim 1 , wherein at least one of said first and second orientation control elements is a protrusion formed on said pixel electrode or said opposed electrode.
5. The device according to claim 1 , wherein a dielectric anisotropy of said liquid crystal molecules of said liquid crystal layer is negative.
6. The device according to claim 1 , wherein each individual orientation control element of said assembly has a same shape.
7. The device according to claim 1 , wherein all individual orientation control elements of said assembly are arranged in a single line.
8. The device according to claim 1 , wherein said assembly comprises a series of triangular shapes, when looking perpendicular to said substrates, all of said triangular shapes pointing in a same direction.