A liquid crystal display device comprising: a display unit (110, 111, 112, 113) having a display substrate (22, 22A, 22B) and an array substrate laminated via a liquid crystal layer; and a control unit that controls the display unit (110, 111, 112, 113), wherein the display substrate (22, 22A, 22B) is composed of a plurality of light absorbing resin layer patterns in which an opening portion is formed, a plurality of copper alloy film patterns, a transparent resin layer and a plurality of transparent electrode patterns which are laminated in this order on a surface of a first transparent substrate, facing the liquid crystal layer; the array substrate includes, on a surface of a second transparent substrate, facing the liquid crystal layer, a metal wiring, a plurality of pixel electrodes, a plurality of thin film transistors and an insulation layer; the plurality of light absorbing resin layer patterns and the plurality of copper alloy film patterns are formed in an identical pattern being overlapped with each other, when viewing from a lamination direction in which the display substrate (22, 22A, 22B), the liquid crystal layer and the array substrate are laminated; the plurality of copper alloy film patterns are arranged in a first direction which orthogonally crosses the lamination direction to be insulated from each other; the plurality of transparent electrode patterns are arranged in a second direction which orthogonally crosses both the lamination direction and the first direction to be insulated from each other; the plurality of light absorbing resin layer patterns are formed of a light absorbing resin layer containing a black material; and the control unit performs, in a time sharing manner, liquid crystal driving in which liquid crystal molecules possessed in the liquid crystal layer are driven by applying a voltage between the transparent electrode pattern and the pixel electrode in the lamination direction, and detection of a change in an electrostatic capacitance between the plurality of copper alloy film patterns and the plurality of transparent electrode patterns, characterised in that an auxiliary conductor is provided on the plurality of transparent electrode patterns, the auxiliary conductor having a resistivity lower than that of each of the plurality of transparent electrode patterns. a display unit (110, 111, 112, 113) having a display substrate (22, 22A, 22B) and an array substrate laminated via a liquid crystal layer; and a control unit that controls the display unit (110, 111, 112, 113), wherein the display substrate (22, 22A, 22B) is composed of a plurality of light absorbing resin layer patterns in which an opening portion is formed, a plurality of copper alloy film patterns, a transparent resin layer and a plurality of transparent electrode patterns which are laminated in this order on a surface of a first transparent substrate, facing the liquid crystal layer; the array substrate includes, on a surface of a second transparent substrate, facing the liquid crystal layer, a metal wiring, a plurality of pixel electrodes, a plurality of thin film transistors and an insulation layer; the plurality of light absorbing resin layer patterns and the plurality of copper alloy film patterns are formed in an identical pattern being overlapped with each other, when viewing from a lamination direction in which the display substrate (22, 22A, 22B), the liquid crystal layer and the array substrate are laminated; the plurality of copper alloy film patterns are arranged in a first direction which orthogonally crosses the lamination direction to be insulated from each other; the plurality of transparent electrode patterns are arranged in a second direction which orthogonally crosses both the lamination direction and the first direction to be insulated from each other; the plurality of light absorbing resin layer patterns are formed of a light absorbing resin layer containing a black material; and the control unit performs, in a time sharing manner, liquid crystal driving in which liquid crystal molecules possessed in the liquid crystal layer are driven by applying a voltage between the transparent electrode pattern and the pixel electrode in the lamination direction, and detection of a change in an electrostatic capacitance between the plurality of copper alloy film patterns and the plurality of transparent electrode patterns, characterised in that an auxiliary conductor is provided on the plurality of transparent electrode patterns, the auxiliary conductor having a resistivity lower than that of each of the plurality of transparent electrode patterns.