Liquid crystal display apparatus having alignment control for brightness and response
View Patent ↗A liquid crystal display apparatus including a pair of substrates having electrodes and vertical alignment layers. A liquid crystal having a negative anisotropy of dielectric is inserted between the substrates. Each substrate has linearly arranged alignment control structures for controlling the alignment of the liquid crystal. The alignment control structures are formed in the form of projections or slits. Each alignment control structure is formed of a plurality of constituent units. In addition, means for forming a boundary of alignment of liquid crystal (singular point in director field) to control the liquid crystal located on the alignment control structures.
1. A liquid crystal display apparatus comprising:
a pair of substrates having electrodes and vertical alignment layers;
a liquid crystal having a negative anisotropy of dielectric constant and inserted between said pair of substrates;
linearly arranged structures arranged in each of said pair of substrates for controlling alignment of the liquid crystal;
polarizers arranged respectively on the outside of said pair of substrates,
wherein one of said polarizers has an absorption axis displaced by a predetermined angle from an orientation rotated 45 degrees with respect to an orientation where said linearly arranged structures extend, and
wherein an angle A at which a direction of said absorption axis crosses a linearly arranged structure arranged in at least one of said pair of substrate is in one of ranges of 25°<A<45° and 45°<A<65°.
2. The liquid crystal display apparatus according to claim 1 , wherein
absorption axes of said polarizers cross at right angles to each other.
3. The liquid crystal display apparatus according to claim 1 , wherein said linearly arranged structures are projections of a dielectric material formed on said electrode.
4. The liquid crystal display apparatus according to claim 1 , wherein said linearly arranged structures are slits formed in said electrodes.