Patent ID: 7808608

Claim:
An LCD device comprising: a first substrate comprising a pixel area and a non-pixel area disposed peripherally to the pixel area, the pixel area having a thin film transistor and a pixel electrode in each sub-pixel defined by gate and data lines crossing each other; a second substrate having a color filter layer and a black matrix layer, the second substrate disposed in opposition to the first substrate; a liquid crystal layer disposed between the first and second substrates; and an alignment mark disposed on at least one of the first substrate and the second substrate, wherein the alignment mark and black matrix layer are positioned in the non-pixel area; wherein an entire body of the alignment mark is positioned within a hole of the black matrix layer such that the entire body of the alignment mark is exposed through the hole of the black matrix layer; wherein the alignment mark is completely enclosed by a inner wall of the hole which goes through the black matrix wherein the non-pixel area has a gate drive area connected with the gate lines, and the hole in the black matrix layer reveals the alignment mark and the gate drive area; wherein the alignment mark is positioned within the gate driver area; wherein size of the gate driver area is same as the size of the hole.