Patent ID: 6879357

Claim:
A liquid crystal display device comprising: a first substrate having a main surface on which a plurality of pixel electrodes are arranged along a first direction and a second direction transverse to the first direction, and a plurality of signal lines are extended along the first direction and juxtaposed along the second direction; a second substrate having a main surface on which a black matrix is formed and being bonded to the first substrate to space the main surface of the second substrate from the main surface of the first substrate being opposite to each other; and a liquid crystal layer sealed between the first substrate and the second substrate, wherein an alignment film contacting with the liquid crystal layer is formed on a main surface of the first substrate, a group of the plurality of pixel electrodes forming a line along the first direction in an area between a pair of the plurality of signal lines adjacent to one another, and each of the pixel electrodes forming the line is connected to one of the pair of the signal lines through a switching element, the black matrix overlaps an edge portion of each pixel electrode of the group of pixel electrodes forming the line which extends along said one of the pair of the signal lines and forms a first light shielding portion having a first width along the second direction, the black matrix overlaps another edge portion of said each pixel electrode of the group of pixel electrodes forming the line which extends along another of the pair of the signal lines and forms a second light shielding portion having a second width along the second direction, rubbing treatment is applied to the alignment film in the main surface of the first substrate from said one of the pair of the signal lines which is adjacent to the first light shielding portion having the first width to said another of the pair of the signal lines which is adjacent to the second light shielding portion having the second width in a direction meeting an extension direction of at least one of the pair of the signal lines at an obtuse angle clockwise from the extension direction, and the second width of the second light shielding portion is broader than the first width of the first light shielding portion.