Patent ID: 8259269
Filing Date: 2012-09-04
Classification: G02F

Abstract:
1. A liquid crystal display device, comprising: a first substrate; a second substrate; and a liquid crystal layer; wherein the first substrate and the second substrate face each other through the liquid crystal layer, a pixel electrode that forms a pixel and a common electrode are disposed over the second substrate, one of the pixel electrode and the common electrode has a plurality of slit like apertures at least partially delimited by adjacent electrode portions of the one of the pixel electrode and the common electrode, the adjacent electrode portions being joined at least one part of the pixel, another of the pixel electrode and the common electrode has no slit like aperture, an electric field having a parallel component with respect to a substrate surface is applied between the pixel electrode and the common electrode, the liquid crystal layer whose dielectric anisotropy is negative in a state where no electric field is applied is aligned in a direction that is substantially normal to the substrate, and a first polarizer and a second polarizer are disposed outside of the first substrate and the second substrate; wherein the another of the pixel electrode and the common electrode having no slit like aperture is superposed with the one of the pixel electrode and the common electrode having the plurality of slit like apertures through an insulation layer disposed therebetween; wherein the liquid crystal layer to which an electric field is applied by means of the pixel electrode and the common electrode is divided into multi-domains; wherein the multi-domains are performed by at least one slit like aperture of the plurality of slit like apertures of the one of the pixel electrode and the common electrode in which edges of the adjacent electrode portions delimiting a width of the at least one slit like aperture diverge from one another in a direction away from a joined portion of the adjacent electrode portions so that both of the width of the plurality of slit like apertures and a width of a plurality of the adjacent electrode portions in the pixel substantially continuously increase in a direction away from the joined portions of the adjacent electrode portions, the plurality of slit like apertures and the plurality of the adjacent electrode portions being arranged around respective ones of the joined portions; and wherein the one of the pixel electrode and the common electrode having the plurality of slit like apertures has portions which extend beyond edges of the another of the pixel electrode and the common electrode in the direction away from the joined portions of the adjacent electrode portions.