Patent ID: 7796226

Claim:
A liquid crystal display device including a liquid crystal display panel which comprises: a first substrate; a second substrate arranged closer to a viewer's side than the first substrate; and positive liquid crystal sandwiched between the first substrate and the second substrate, wherein the liquid crystal display panel includes a plurality of sub pixels within a display region, each sub pixel of the plurality of sub pixels includes a first electrode formed on the first substrate and a second electrode formed on the first substrate, and the liquid crystal display panel is configured to drive the liquid crystal by generating an electric field using the difference in potential between the first electrode and the second electrode, wherein the first substrate includes: a first alignment film arranged on a liquid-crystal-side surface thereof; a plurality of video lines configured to input a video signal to the respective sub pixels; and a first polarizer arranged on a surface thereof opposite to the liquid crystal, the second substrate includes: a second alignment film arranged on a liquid-crystal-side surface thereof; and a second polarizer arranged on a surface thereof opposite to the liquid crystal, the first electrode includes linear portions which extend in a direction of long sides out of the long sides and short sides of each sub pixel, an extension direction of the linear portions of the first electrode in one sub pixel is set to one direction, the video lines extend in a first direction along an arbitrary one side of the display region of the liquid crystal display panel as a whole while being bent locally, the first direction is set as a reference direction, and assuming a narrow-side angle out of intersection angles between the reference direction and the extension direction of a portion of the video line as θ 1 , assuming a narrow-side angle out of intersection angles between the reference direction and the extension direction of the linear portions of the first electrode as θ 2 , assuming a narrow-side angle out of intersection angles between the reference direction and an alignment axis of the second alignment film as θ 3 , assuming a narrow-side angle out of intersection angles between the reference direction and an absorption axis of the second polarizer as θ 4 , and in measuring the angles θ 1 , θ 2 , θ 3 and θ 4 within a range from −90° to +90° from the reference direction while setting a clockwise direction as a normal direction, all of a sign of the angle θ 1 , a sign of the angle θ 2 and a sign of the angle θ 3 are equal in one sub pixel, the angles θ 1 in all sub pixels have the same sign, and following formulae (1) to (5) are satisfied in all sub pixels. 10°≦|θ1|≦|θ3| and 10°≦|θ2|≦|θ3| (1) 0°≦|θ3−θ2|≦20° (2) 0°≦|θ1−θ2|≦2° (3) 10°≦|θ3|≦80° (4) 0°≦|θ3−θ4|≦2° or 88°≦|θ3−θ4|≦92° (5)