Patent ID: 7787088
Filing Date: 2010-08-31
Classification: G02F

Abstract:
1. An in-plane switching mode liquid crystal display device, comprising: a first substrate including a pixel electrode in a pixel region; a second substrate facing the first substrate and including a common electrode; a first alignment layer on the pixel electrode; a second alignment layer on the common electrode; a first ferroelectric liquid crystal layer on the first alignment layer and including a first spontaneous polarization; a second ferroelectric liquid crystal layer on the second alignment layer and including a second spontaneous polarization, one of a rotational direction of the first ferroelectric liquid crystal layer in one pixel region and a rotational direction of the second ferroelectric liquid crystal layer in the one pixel region has a clockwise direction, and the other one of the rotational direction of the first ferroelectric liquid crystal layer in the one pixel region and the rotational direction of the second ferroelectric liquid crystal layer in the one pixel region has a counterclockwise direction; and a twisted nematic liquid crystal layer between the first and second ferroelectric liquid crystal layers, wherein a molecule in the first ferroelectric liquid crystal layer has different heights from the first alignment layer during rotation, and a molecule in the second ferroelectric liquid crystal layer has different heights from the second alignment layer during rotation, wherein each molecule in the first and second ferroelectric liquid crystal layers is rotated using one end of the each molecule as a pivot such that a cone shape is formed by a rotated trail of the each molecule, and wherein each of the clockwise direction and the counterclockwise direction is substantially perpendicular to a surface of each of the first and second substrates.