Patent ID: 7999891
Filing Date: 2011-08-16
Classification: G02F

Abstract:
1. A liquid crystal display device comprising: a first substrate having a first electrode, a second substrate having a second electrode opposed to the first electrode, and at least a vertically aligned liquid crystal layer interposed between the first electrode and the second electrode, each of a plurality of pixel regions being defined by the first electrode and the second electrode, wherein at least one pixel region among the plurality of pixel regions is substantially in a shape of a rectangle having longer sides and shorter sides as viewed from above and is divided into a plurality of sub-pixel regions with dielectric protrusions regularly arranged on the first substrate, the plurality of sub-pixel regions comprising at least two transmission regions where the first electrode is a transparent electrode and a reflection region where the first electrode is a reflective electrode, the reflection region being provided between the two transmission regions so that portions of the reflection region and the transmission regions are aligned in a direction substantially parallel with the longer sides, wherein first and second pairs of dielectric protrusions are located proximate boundaries between the reflection region and the two transmission regions, wherein each of the first and second pairs of protrusions extends from near a longer side of the rectangle in a direction substantially parallel to a shorter side of the rectangle, wherein the first electrode comprises openings in the two transmission regions, wherein the second substrate comprises a transparent dielectric layer facing the liquid crystal layer in the reflection region; a wall structure on the first substrate for substantially surrounding the at least one pixel region; and liquid crystal molecules in the liquid crystal layer in each sub-pixel region are axisymmetrically aligned around an axis vertical to the surface of the first substrate when a predetermined voltage is applied between the first electrode and the second electrode.