LIQUID CRYSTAL DISPLAY DEVICE

摘要

In a liquid crystal display device of a lateral electric field mode including a first substrate (50) and a second substrate (60) having a liquid crystal layer (70) therebetween, a first electrode (18) and a second electrode (16) located in the first substrate, and an alignment film (28) provided to be in contact with the liquid crystal layer; the alignment film (28) includes a first alignment region that aligns liquid crystal molecules in a first domain (P1) in a first alignment axis azimuth (D1), a second alignment region that aligns liquid crystal molecules in a second domain (P2) in a second alignment axis azimuth (D2), a third alignment region that aligns liquid crystal molecules in a third domain (P3) in the first alignment axis azimuth (D1), and a fourth alignment region that aligns liquid crystal molecules in a fourth domain (P4) in the second alignment axis azimuth (D2). The liquid crystal molecules in the first domain, the second domain, the third domain and the fourth domain are all rotated in the same direction.

主权项

1. A liquid crystal display device of a lateral electric field mode, comprising: a liquid crystal layer; first and second substrates facing each other with the liquid crystal layer interposed therebetween; first and second polarizers located respectively in the first and second substrates; a first electrode and a second electrode located in the first substrate on the side of the liquid crystal layer; and a first alignment film provided between the first electrode/the second electrode and the liquid crystal layer so as to be in contact with the liquid crystal layer, the first alignment film regulating an alignment axis direction of liquid crystal molecules in the absence of an applied voltage; wherein:
the liquid crystal layer includes a first domain and a second domain mutually differing in terms of alignment axis azimuth of the liquid crystal molecules in the presence of an applied voltage, and also includes a third domain and a fourth domain mutually differing in terms of alignment axis azimuth of the liquid crystal molecules in the presence of an applied voltage; the first domain and the second domain are arrayed in a vertical direction, the third domain and the fourth domain are arrayed in the vertical direction, the first domain and the fourth domain are arrayed in a horizontal direction, and the second domain and the third domain are arrayed in the horizontal direction; the first alignment film includes a first alignment region that aligns the liquid crystal molecules in the first domain in a first alignment axis azimuth, a second alignment region that aligns the liquid crystal molecules in the second domain in a second alignment axis azimuth substantially orthogonal to the first alignment axis azimuth, a third alignment region that aligns the liquid crystal molecules in the third domain in the first alignment axis azimuth, and a fourth alignment region that aligns the liquid crystal molecules in the fourth domain in the second alignment axis azimuth; and when a voltage is applied between the first electrode and the second electrode, the liquid crystal molecules in the first domain, the second domain, the third domain and the fourth domain are all rotated in the same direction.