LIQUID CRYSTAL DISPLAY ELEMENT

摘要

The present invention relates to a PSA-mode liquid crystal display device including a polymer produced by polymerizing a polymerizable compound by energy ray irradiation in a state in which a mixture of the polymerizable compound and a liquid crystal composition is held between the first substrate and the second substrate, the polymer having a number-average molecular weight of 50,000 or more in terms of polystyrene. In a PSA-mode display device in which alignment of liquid crystal molecules substantially vertically aligned between the substrates is controlled by applying a voltage, a pre-tilt angle can be properly given without being inhibited. Therefore, the present invention provides a PSA-mode display device with good alignment stability, uniform alignment within the substrates, and no or suppressed display defects and a method for producing the same.

主权项

1. A liquid crystal display device comprising a first substrate having a common electrode, a second substrate having a pixel electrode, a liquid crystal composition layer held between the first substrate and the second substrate, a polymer that regulates an alignment direction of a liquid crystal composition, and a vertical alignment film provided on at least one of the first substrate and the second substrate, the alignment direction of liquid crystal molecules in the liquid crystal composition layer being controlled by the vertical alignment film to be substantially vertical to the first substrate and the second substrate on the sides adjacent to the liquid crystal composition layer, wherein the liquid crystal molecules in the liquid crystal composition layer are controlled by applying, between the common electrode and the pixel electrode, a voltage substantially vertically to the first substrate and the second substrate, and the polymer has a number-average molecular weight of 50,000 or more in terms of polystyrene.