Display apparatus

Patent metadata

Field	Value
Publication number	US-2020403052-A1
Application number	US-202017010771-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 thin-film transistor comprising 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; a shield layer in a layer different from the data line, the source electrode, the drain electrode, and the gate electrode, such that the shield layer is between the data line and a component of the thin-film transistor and overlaps at least one of the data line and the component of the thin-film transistor; and a connecting unit connected to the source electrode of the thin-film transistor through a first hole in at least one insulating layer between the source electrode and the connecting unit, and connected to the shield layer through a second hole in at least one insulating layer between the shield layer and the connecting unit, wherein the shield layer is configured to transmit an initialization voltage to a driving gate electrode of a driving thin-film transistor.

2 . The display apparatus of claim 1 , wherein the gate electrode comprises a first gate electrode and a second gate electrode at a same layer.

3 . The display apparatus of claim 2 , wherein the shield layer overlaps the component of the thin-film transistor, the component being between the first gate electrode and the second gate electrode of the thin-film transistor.

4 . The display apparatus of claim 1 , further comprising a storage capacitor comprising a first storage capacitor plate and a second storage capacitor plate, the second storage capacitor plate overlapping the first storage capacitor plate and being above the first storage capacitor plate,
wherein the data line is in a layer above the second storage capacitor plate.

5 . The display apparatus of claim 4 , wherein the second storage capacitor plate and the shield layer are at a same layer.

6 . The display apparatus of claim 4 , wherein the first storage capacitor plate is electrically coupled to the driving gate electrode of the driving thin-film transistor.

7 . The display apparatus of claim 4 , wherein the first storage capacitor plate is electrically coupled to the drain electrode of the thin-film transistor.

8 . The display apparatus of claim 4 , wherein the driving gate electrode of the driving thin-film transistor is electrically coupled to the first storage capacitor plate and the drain electrode of the thin-film transistor.

9 . A display apparatus comprising:
a first thin-film transistor comprising 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 of the first thin-film transistor, wherein the data line is configured to transmit a data signal; a shield layer in a layer different from the data line, the source electrode, the drain electrode, and the gate electrode of the first thin-film transistor such that the shield layer is between the data line and a component of the first thin-film transistor and overlaps at least one of the data line and the component of the first thin-film transistor; a second thin-film transistor comprising a source electrode, a drain electrode, and a gate electrode a first pixel electrode electrically coupled to the drain electrode of the second thin-film transistor through a hole in at least one insulating layer between the drain electrode of the second thin-film transistor and the first pixel electrode; and a second pixel electrode electrically coupled to an extended part from the source electrode of the first thin-film transistor through a hole in at least one insulating layer between the extended part and the second pixel electrode, wherein the shield layer is electrically coupled to the source electrode of the first thin-film transistor, and configured to transmit an initialization voltage to a driving gate electrode of a driving thin-film transistor.

10 . The display apparatus of claim 9 , wherein the gate electrode of the first thin-film transistor comprises a first gate electrode and a second gate electrode at a same layer.

11 . The display apparatus of claim 10 , wherein the shield layer overlaps the component of the first thin-film transistor, the component being between the first gate electrode and the second gate electrode of the first thin-film transistor.

12 . The display apparatus of claim 9 , further comprising a storage capacitor comprising a first storage capacitor plate and a second storage capacitor plate, the second storage capacitor plate overlapping the first storage capacitor plate and being above the first storage capacitor plate,
wherein the data line is in a layer above the second storage capacitor plate.

13 . The display apparatus of claim 12 , wherein the second storage capacitor plate and the shield layer are at a same layer.

14 . The display apparatus of claim 12 , wherein the first storage capacitor plate is electrically coupled to the driving gate electrode of the driving thin-film transistor and the drain electrode of the first thin-film transistor.

15 . A display apparatus comprising:
a thin-film transistor comprising 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; a scan line electrically coupled to the gate electrode; and a shield layer in a layer different from the data line, the source electrode, the drain electrode, and the gate electrode such that the shield layer is between the data line and a component of the thin-film transistor and overlaps at least one of the data line and the component of the thin-film transistor, wherein the shield layer is electrically coupled to the source electrode of the thin-film transistor, and configured to transmit an initialization voltage to a driving gate electrode of a driving thin-film transistor, and wherein the source electrode of the thin-film transistor is extended to cross the scan line and an extended part from the source electrode of the thin-film transistor is electrically coupled to a pixel electrode.

16 . The display apparatus of claim 15 , wherein the gate electrode of the thin-film transistor comprises a first gate electrode and a second gate electrode at a same layer.

17 . The display apparatus of claim 15 , wherein the gate electrode of the thin-film transistor comprises a first gate electrode and a second gate electrode, and wherein the shield layer overlaps the component of the thin-film transistor, the component being between the first gate electrode and the second gate electrode of the thin-film transistor.

18 . The display apparatus of claim 15 , further comprising a storage capacitor comprising a first storage capacitor plate and a second storage capacitor plate, the second storage capacitor plate overlapping the first storage capacitor plate and being above the first storage capacitor plate,
wherein the data line is in a layer above the second storage capacitor plate.

19 . The display apparatus of claim 18 , wherein the second storage capacitor plate and the shield layer are at a same layer.

20 . The display apparatus of claim 19 , wherein the first storage capacitor plate is electrically coupled to the driving gate electrode of the driving thin-film transistor and the drain electrode of the thin-fi

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