Display device having redundant wirings
View Patent ↗A display device includes a substrate having an edge portion, a display region located on the substrate and separated from the edge portion, a drive circuit region between the display region and the edge portion, a terminal region on the edge portion; and wirings in the display region, the drive circuit region, and an area between the drive circuit region and the terminal region, wherein at least one wiring of the wirings include a first conductive layer, a second conductive layer overlapping the first conductive layer in a plan view and separated from the first conductive layer, a first connection portion where the first conductive layer and the second conductive layer are electrically connected, a second connection portion where the first conductive layer and the second conductive layer are electrically connected, and the first connection portion is separated from the second connection portion.
1. A display device, comprising:
a substrate;
a display region including a plurality of pixels on a plane of the substrate;
wherein
the display region includes
a first insulating layer and a second insulating layer above the substrate;
a first wiring above the second insulating layer running in a first direction;
a third insulating layer above the second insulating layer;
a second wiring running in a second direction intersecting the first wiring; and
a transistor including a semiconductor layer between the first insulating layer and the second insulating layer, and a gate electrode between the second insulating layer and the third insulating layer,
the second wiring includes a first conductive layer above the second insulating layer; and a second conductive layer above the third insulating layer,
the first conductive layer and the second conductive layer are electrically connected at a first connection portion and a second connection portion separated from the first connection portion,
the first connection portion is in a first contact hole penetrating the third insulating layer,
the second connection portion is in a second contact hole penetrating the third insulating layer,
the first insulating layer is between the substrate and the second insulating layer,
a source region and a drain region of the transistor are connected to a source wiring and a drain wiring respectively, the source wiring and the drain wiring located above the third insulating layer,
the first conductive layer, the source wiring, and the drain wiring are in a same layer, and
the second conductive layer is located above the first conductive layer.
2. The display device according to claim 1 , wherein
the substrate has flexibility and includes a bending region, and
the bending region is between the first connection portion and the second connection portion.
3. The display device according to claim 2 , wherein
a support member is provided on a rear surface of the substrate, the rear surface being an opposite side of the second insulating layer,
the support member has a notch portion between the first connection portion and the second connection portion, and
the notch is arranged corresponding to the bending region.
4. The display device according to claim 1 , wherein
a same signal is applied to the first conductive layer and the second conductive layer.