Display device
It is possible to reduce a size of a lower frame region to ensure a wiring corrosion margin equivalent to that of a conventional technique. In a display device, a video signal wiring arranged in the lower frame region includes, in a region between a terminal section (terminal) and a video signal line, a first wiring formed on a first wiring layer and having one end connected to the terminal section to which a video signal line driving circuit is connected, a second wiring formed on a second wiring layer different from the first wiring layer and having one end connected to the other end of the first wiring, and a third wiring formed on the first wiring layer and having one end connected to the other end of the second wiring. The other end of the third wiring is connected to the video signal line via a fourth wiring formed on the second wiring layer, and the first wiring layer is formed on the side closer to an array substrate than to the second wiring layer.
1 . An active device comprising:
a substrate including an active region and a frame region formed around the active region in a plan view;
a plurality of pixels, a plurality of scanning signal lines, and a plurality of signal lines arranged in the active region;
a plurality of signal wirings electrically connected to the plurality of signal lines; and
a plurality of terminal sections electrically connected to the plurality of signal wirings, the signal wirings and the terminal sections being arranged in the frame region;
wherein in a region between each of the terminal sections and each of the signal lines, each of the signal wirings arranged in the frame region comprises:
a first wiring formed on a first wiring layer and having a first end connected to a terminal;
a second wiring formed on a second wiring layer different from the first wiring layer and having a first end connected to a second end of the first wiring; and
a third wiring formed on the first wiring layer and having a first end connected to a second end of the second wiring,
a second end of the third wiring is connected to the signal lines via a fourth wiring formed on the second wiring layer,
the first wiring layer is formed on a side closer to the substrate than to the second wiring layer,
an organic insulating film is formed to cover the second wiring and the fourth wiring opposite to a side of the substrate, and
a non-formation region of the organic insulating film is arranged between a formation region of the second wiring and a formation region of the fourth wiring.
2 . The active device according to claim 1 ,
wherein the first wiring layer is a layer on which the plurality of scanning signal lines are arranged, and
the second wiring layer is a layer on which the plurality of signal lines are arranged.
3 . The active device according to claim 1 , further comprising:
a selection circuit selecting the signal lines for a signal to be fed, the selection circuit being arranged in the frame region,
wherein the selection circuit is arranged between each of the signal lines and the fourth wiring.
4 . The active device according to claim 1 ,
wherein each material for the first wiring and the third wiring formed on the first wiring layer, and each material for the second wiring and the fourth wiring formed on the second wiring layer, differ from each other, and
a specific resistance of each material for the second wiring and the fourth wiring is lower than a specific resistance of each material for the first wiring and the third wiring.
5 . The active device according to claim 1 ,
wherein each thickness of the second wiring and the fourth wiring is larger than each thickness of the first wiring and the third wiring.
6 . The active device according to claim 1 , further comprising:
a seal above the organic insulating film in the active region, wherein the seal is arranged in the non-formation region.