Display apparatus

Patent metadata

Field	Value
Publication number	US-2020403053-A1
Application number	US-202017010777-A
Country	US
Kind code	A1
Filing date	Sep 2, 2020
Priority date	Aug 5, 2014
Publication date	Dec 24, 2020
Grant date	—

Abstract

A display apparatus includes: a thin-film transistor including a source electrode, a drain electrode, and a gate electrode; a data line in a layer different from the source electrode, the drain electrode, and the gate electrode, wherein the data line is configured to transmit a data signal; and a shield layer between the data line and a component of the thin-film transistor.

First claim

What is claimed is:

1 . A display apparatus comprising:
a semiconductor layer comprising a first semiconductor layer and a second semiconductor layer; a first thin-film transistor comprising the first semiconductor layer; a capacitor comprising a first electrode layer and a second electrode layer overlapping the first electrode layer, the first electrode layer overlapping the first semiconductor layer; and a second thin-film transistor comprising the second semiconductor layer, the second semiconductor layer being electrically connected to the first electrode layer, a first scan line overlapping a part of the second semiconductor layer; an initialization voltage line electrically connected to the second thin-film transistor; a first connecting unit electrically connected to the second semiconductor layer and the initialization voltage line; a first contact hole and a second contact hole in at least one insulating layer between the second semiconductor layer and the first connecting unit; and a first pixel electrode, wherein the first scan line is between the first contact hole and the second contact hole in a plan view, and wherein the first contact hole overlaps the second semiconductor layer, and the first connecting unit electrically connected to the second semiconductor layer through the first contact hole, and wherein the second contact hole overlaps a part of the semiconductor layer extended from the second semiconductor layer, and the first pixel electrode is electrically connected to the semiconductor layer through the second contact hole.

2 . The display apparatus of claim 1 , wherein the second semiconductor layer crosses the first scan line twice.

3 . The display apparatus of claim 1 , wherein the first thin-film transistor comprises a gate electrode electrically connected to the first electrode layer.

4 . The display apparatus of claim 3 , wherein the gate electrode of the first thin-film transistor and the first electrode layer are one body.

5 . The display apparatus of claim 1 , wherein the second electrode layer and the initialization voltage line are at a same layer.

6 . The display apparatus of claim 1 , wherein the second thin-film transistor comprises a first gate electrode and a second gate electrode at a same layer.

7 . The display apparatus of claim 6 , wherein the first gate electrode and the second gate electrode are parts of the first scan line overlapping the second semiconductor layer.

8 . The display apparatus of claim 6 , wherein the initialization voltage line overlaps a part of the second semiconductor layer between the first gate electrode and the second gate electrode.

9 . The display apparatus of claim 6 , further comprising an electric shield layer overlapping a part of the second semiconductor layer between the first gate electrode and the second gate electrode of the second thin-film transistor.

10 . The display apparatus of claim 9 , wherein the second electrode layer and the electric shield layer are at a same layer, and the electric shield layer is a part of the initialization voltage line.

11 . The display apparatus of claim 6 , wherein a part of the second semiconductor layer between the first gate electrode and the second gate electrode is curved.

12 . The display apparatus of claim 1 , further comprising:
a third contact hole in the at least one insulating layer and overlapping the second semiconductor layer; and a second connecting unit electrically connected to the second semiconductor layer through the third contact hole, and electrically connected to the first electrode layer.

13 . The display apparatus of claim 12 , further comprising a second scan line between the capacitor and the third contact hole in a plan view.

14 . The display apparatus of claim 1 , further comprising:
a third thin-film transistor comprising a third semiconductor layer; a second scan line crossing the third semiconductor layer; and a second connecting unit electrically connected to the first electrode layer and the third semiconductor layer.

15 . The display apparatus of claim 14 , further comprising a third contact hole in the at least one insulating layer and overlapping the third semiconductor layer, and
wherein the second connecting unit is electrically connected to the third semiconductor layer through the third contact hole.

16 . The display apparatus of claim 15 , wherein the second scan line is between the capacitor and the third contact hole in a plan view.

17 . The display apparatus of claim 14 , wherein the third thin-film transistor comprises a first gate electrode and a second gate electrode at a same layer.

18 . The display apparatus of claim 17 , wherein the first gate electrode and the second gate electrode of the third thin-film transistor are parts of the second scan line overlapping the third semiconductor layer.

19 . The display apparatus of claim 17 , wherein the second electrode layer comprises a protruding part overlapping a part of the third semiconductor layer between the first gate electrode and the second gate electrode of the third thin-film transistor.

20 . The display apparatus of claim 17 , further comprising an electric shield layer overlapping a part of the third semiconductor layer between the first gate electrode and the second gate electrode of the third thin-film transistor.

21 . The display apparatus of claim 20 , further comprising a driving voltage line electrically connected to the electric shield layer.

22 . The display apparatus of claim 20 , wherein the second electrode layer and the electric shield layer are at a same layer.

23 . The display apparatus of claim 1 , further comprising:
a data line; and a fourth thin-film transistor comprising a fourth semiconductor layer and electrically connected to the data line and the first thin-film transistor.

24 . The display apparatus of claim 1 , wherein the part of the first semiconductor layer overlapped with the first electrode layer is curved.

25 . The display apparatus of claim 1 , further comprising a data line in a layer different from the semiconductor layer, the first electrode layer and the second electrode layer.

26 . The display apparatus of claim 25 , further comprising:
an electric shield layer overlapping a part of the semiconductor layer extended from the first semiconductor layer and between the first electrode layer and the data line.

27 . The display apparatus of claim 26 , wherein the data line overlaps the electric shield layer.

28 . The display apparatus of claim 26 , wherein the electric shield layer and the second electrode layer are at a same layer.

29 . The display apparatus of claim 26 , further comprising a driving voltage line electrically connected to the electric shield layer.

30 . The display apparatus of claim 26 , wherein the electric shield layer and the second electrode layer are one body.

31 . The display apparatus of claim 1 , further comprising:
a data line in a layer different from the semiconductor layer, the first electrode layer and the second electrode layer, wherein the data line overlaps the second electrode layer and a part of the semiconductor layer extended from the first semiconductor layer, and wherein the part of the semiconductor layer extended f

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yangwan
• Kwak Wonkyu
• Noh Jaedu
• Lee Jaeyong

Classifications

• G02F1/13629

  Multilayer wirings · CPC title

• G02F1/136218

  Shield electrodes · CPC title

• G02F1/136213

  Storage capacitors associated with the pixel electrode · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/441 Primary

  Interconnections, e.g. scanning lines · CPC title