Display device having misalignment detection pattern for detecting misalignment between conductive layer and insulating layer

A display device comprising a display panel and a circuit substrate connected to the display panel,

• wherein the display panel includes at least one array substrate,
• the circuit substrate is separately formed and positioned different from said array substrate and comprises an insulating substrate, a conductive layer, an insulating layer to cover a part of the conductive layer,
• the conductive layer of the circuit substrate includes a wiring pattern, wiring terminals, and a misalignment detection pattern for detecting the misalignment between the conductive layer and the insulating layer,
• the wiring terminals are exposed from the insulating layer and are applied with a plating layer to a surface exposed from the insulating layer,
• if the misalignment between the conductive layer and the insulating layer is smaller than a predetermined misalignment tolerance, the misalignment detection pattern comprises a pattern covered by the insulating layer in a manner to prevent adherence of a plating material to the conductive layer, and
• if the misalignment between the conductive layer and the insulating layer is larger than the predetermined misalignment tolerance, a part of the misalignment detection pattern is exposed from the insulating layer in a manner to be applied with plating.