Display device

Patent metadata

Field	Value
Publication number	US-2016187751-A1
Application number	US-201514965151-A
Country	US
Kind code	A1
Filing date	Dec 10, 2015
Priority date	Dec 25, 2014
Publication date	Jun 30, 2016
Grant date	—

Abstract

According to one embodiment, a display device includes a first signal line, a second signal line, a first switching element, a second switching element, an insulating film, a first contact hole, a second contact hole, a first pixel electrode and a second pixel electrode. The first contact hole is formed in the insulating film, and located between the first signal line and the second signal line. The second contact hole is formed in the insulating film, located opposite to the first contact hole with respect to the second signal line, and also located side by side with the first contact hole in the first direction.

First claim

What is claimed is:

1 . A display device comprising:
a first signal line; a second signal line spaced from the first signal line; a first switching element connected to the first signal line; a second switching element connected to the second signal line; an insulating film provided above the first switching element, the second switching element, the first signal line and the second signal line; a first contact hole formed in the insulating film and located between the first and second signal lines; a second contact hole formed in the insulating film, located opposite to the first contact hole with respect to the second signal line, and also located side by side with the first contact hole in a first direction; a first pixel electrode formed above the insulating film, and electrically connected to the first switching element through the first contact hole; and a second pixel electrode formed above the insulating film, electrically connected to the second switching element through the second contact hole, and located opposite to the first pixel electrode in a second direction perpendicular to the first direction.

2 . The display device of claim 1 , wherein with respect to a distance between the first and second signal lines in the first direction, a first specific distance between portions of the first and second signal lines which intersect the first contact hole is smaller than a first formal distance between portions of the first and second signal lines which intersect the first pixel electrode, and a second formal distance between portions of the first and second signal lines which intersect the second pixel electrode.

3 . The display device of claim 1 , further comprising:
a first conductive layer provided between the first and second signal lines; and a second conductive layer provided opposite to the first conductive layer with respect to the second signal line, and located side by side with the first conductive layer in the first direction, wherein the insulating film is provided above the first and second signal lines and the first and second conductive layers, the first pixel electrode is electrically connected to the first switching element via the first conductive layer, and the second pixel electrode is electrically connected to the second switching element via the second conductive layer.

4 . The display device of claim 1 , wherein the first and second pixel electrodes are located between the first and second signal lines.

5 . A display device of claim 1 , wherein
the first switching element is formed of a thin-film transistor including a first semiconductor layer which comprises a first region electrically connected to the first signal line, a second region electrically connected to the first pixel electrode, and a third region located between the first region and the second region, and the second switching element is formed of a thin-film transistor including a second semiconductor layer which comprises a fourth region electrically connected to the second signal line, a fifth region electrically connected to the second pixel electrode, and a sixth region located between the fourth region and the fifth region.

6 . The display device of claim 1 , further comprising:
a third signal line provided below the insulating film, located opposite to the first signal line with respect to the second signal line and the second contact hole, and spaced from the second signal line; a third switching element below the insulating film, and connected to the third signal line; a third contact hole formed in the insulating film, located opposite to the second contact hole with respect to the third signal line, and also located side by side with the first contact hole and the second contact hole in the first direction; and a third pixel electrode formed above the insulating film, electrically connected to the third switching element through the third contact hole, and located opposite to at least one of the first pixel electrode and the second pixel electrode in the first direction.

7 . The display device of claim 6 , wherein a first specific distance between portions of the first and second signal lines which intersect the first contact hole is equal to a second specific distance between portions of the second and third signal lines which intersect the second contact hole in the first direction.

8 . The display device of claim 1 , further comprising:
a third signal line provided below the insulating film, located opposite to the first signal line with respect to the second signal line and the second contact hole, and spaced from the second signal line; a fourth signal line provided below the insulating film, located opposite to the second signal line with respect to the third signal line, and spaced from the third signal line; a third switching element provided below the insulating film, and connected to the third signal line; a fourth switching element provided below the insulating film, and connected to the fourth signal line; a third contact hole formed in the insulating film, located between the third and fourth signal lines, and also located side by side with the first and second contact holes in the first direction; a fourth contact hole formed in the insulating film, located opposite to the third contact hole with respect to the fourth signal line, and also located side by side with the first to third contact holes in the first direction; a third pixel electrode formed above the insulating film, and electrically connected to the third switching element through the third contact hole, and located opposite to the first pixel electrode in the first direction; and a fourth pixel electrode formed above the insulating film, electrically connected to the fourth switching element through the fourth contact hole, and located opposite to the second pixel electrode in the first direction and to the third pixel electrode in the second direction.

Assignees

• Japan Display Inc

Inventors

• Okita Mitsutaka

Classifications

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/136286 Primary

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title