Patent ID: 11906862
Assignee: JAPAN DISPLAY INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 3:
4. A display device comprising:
a semiconductor layer including a first region, a second region and a channel region between the first region and the second region;
a first insulating layer located on the semiconductor layer;
a gate electrode located on the first insulating layer and opposing the channel region;
a second insulating layer located on the first insulating layer and the gate electrode;
a third insulating layer located on the second insulating layer;
a fourth insulating layer located on the third insulating layer;
an alignment film covering the fourth insulating layer;
a plurality of transparent conductive layers located between the second insulating layer and the alignment film;
a first substrate;
a second substrate disposed to oppose the first substrate with a gap therebetween; and
a liquid crystal layer held between the first substrate and the second substrate,
the plurality of transparent conductive layers including a pixel electrode between the fourth insulating layer and the alignment film, a first conductive layer between the second insulating layer and the third insulating layer, and a second conductive layer between the third insulating layer and the fourth insulating layer,
the first conductive layer being in contact with the second region of the semiconductor layer through a first contact hole formed in the first insulating layer and the second insulating layer,
the second conductive layer being in contact with the first conductive layer through a second contact hole formed in the third insulating layer,
the pixel electrode being in contact with the second conductive layer through a third contact hole formed in the fourth insulating layer,
the fourth insulating layer being in contact with the second conductive layer inside of the second contact hole,
the first substrate including the semiconductor layer, the first to fourth insulating layers, the alignment film, the gate electrode, and the plurality of transparent conductive layers, and a fifth insulating layer provided between the pixel electrode and the fourth insulating layer,
the third contact hole being formed in the fourth insulating layer and the fifth insulating layer,
the plurality of transparent conductive layers further including a third conductive layer provided between the fourth insulating layer and the fifth insulating layer,
the third conductive layer facing each of the pixel electrode and the second conductive layer,
the third conductive layer having an opening,
the opening of the third conductive layer overlapping the third contact hole.