Display apparatus

Patent metadata

Field	Value
Publication number	US-11348992-B2
Application number	US-202016775545-A
Country	US
Kind code	B2
Filing date	Jan 29, 2020
Priority date	Jun 21, 2019
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A display apparatus includes a substrate, a driving thin-film transistor arranged on the substrate and including a driving semiconductor layer and a driving gate electrode, a first scanning line arranged on the first substrate and which extends in a first direction, a data line which extends in a second direction that intersects with the first direction, a node connection line arranged in the same layer as the first scanning line, and a shielding conductive layer arranged between the data line and the node connection line and disposed in the same layer as the driving gate electrode, where an end of the node connection line is connected to the driving gate electrode through a first node contact hole.

First claim

What is claimed is:

1. A display apparatus comprising:
a substrate;
a driving thin-film transistor arranged on the substrate and comprising a driving semiconductor layer and a driving gate electrode;
a first scanning line arranged on the substrate and which extends in a first direction;
a data line which extends in a second direction that intersects with the first direction;
a node connection line arranged in a same layer as the first scanning line; and
a shielding conductive layer arranged between the data line and the node connection line and disposed in a same layer as the driving gate electrode,
wherein an end of the node connection line is connected to the driving gate electrode through a first node contact hole.

2. The display apparatus of claim 1 , further comprising
a first gate electrode layer connected to the first scanning line through a third contact hole,
wherein the shielding conductive layer extends from the first gate electrode layer.

3. The display apparatus of claim 2 , wherein
the shielding conductive layer and the node connection line extend in the second direction.

4. The display apparatus of claim 2 , wherein
the first gate electrode layer comprises a compensation gate electrode of a compensation thin-film transistor and a switching gate electrode of a switching thin-film transistor, and
the shielding conductive layer is arranged between the compensation gate electrode and the switching gate electrode.

5. The display apparatus of claim 1 , further comprising
a driving voltage line which extends in the second direction and arranged in a same layer as the data line, and
the shielding conductive layer is arranged between the data line and the driving voltage line.

6. The display apparatus of claim 1 , further comprising
a compensation thin-film transistor connected to the first scanning line and comprising a compensation semiconductor layer and a compensation gate electrode, and
the other end of the node connection line is connected to the compensation semiconductor layer through a second node contact hole.

7. The display apparatus of claim 1 , wherein
a resistance value of the first scanning line is less than a resistance value of the driving gate electrode.

8. The display apparatus of claim 1 , further comprising
a storage capacitor comprising the driving gate electrode as a lower electrode and an upper electrode which overlaps the lower electrode and defines a storage opening having a closed shape, and
the first node contact hole is arranged in the storage opening.

9. The display apparatus of claim 8 , wherein
a size of the storage opening is greater than a size of the first node contact hole.

10. The display apparatus of claim 1 , further comprising:
an emission control thin-film transistor arranged on the substrate and comprising an emission control semiconductor layer and an emission control gate electrode; and
an emission control line which delivers an emission control signal to the emission control gate electrode,
wherein the emission control gate electrode is provided as a portion of the emission control line.

11. The display apparatus of claim 1 , further comprising:
a second scanning line apart from the first scanning line and extending in the first direction; and
a second gate electrode layer connected to the second scanning line through a fourth contact hole,
wherein the shielding conductive layer extends from the second gate electrode layer.

12. The display apparatus of claim 11 , wherein
the second gate electrode layer is a part of a first initialization gate electrode of a first initialization thin-film transistor.

13. The display apparatus of claim 12 , wherein
the first initialization gate electrode has a bent shape.

14. The display apparatus of claim 11 , wherein
the shielding conductive layer extends in the second direction.

15. A display apparatus comprising:
a substrate;
a driving thin-film transistor which is arranged on the substrate and comprises a driving gate electrode and a driving semiconductor layer arranged with a first gate insulating layer therebetween;
a shielding conductive layer arranged in a same layer as the driving gate electrode;
a second gate insulating layer and an interlayer insulating layer arranged on the shielding conductive layer;
a node connection line arranged on the interlayer insulating layer and connected to the driving gate electrode through a first node contact hole that penetrates the interlayer insulating layer and the second gate insulating layer;
a first scanning line arranged in a same layer as the node connection line and which extends in a first direction;
a via layer which covers the first scanning line and the node connection line; and
a data line arranged on the via layer and which extends in a second direction that intersects with the first direction,
wherein the shielding conductive layer extends in the second direction between the data line and the node connection line.

16. The display apparatus of claim 15 , further comprising
a first gate electrode layer connected to the first scanning line through a third contact hole, and
the shielding conductive layer extends from the first gate electrode layer.

17. The display apparatus of claim 15 , further comprising
a second scanning line extending in the first direction; and
a second gate electrode layer connected to the second scanning line through a fourth contact hole, and
wherein the shielding conductive layer extends from the second gate electrode layer.

18. The display apparatus of claim 15 , wherein
the driving semiconductor layer is bent.

19. The display apparatus of claim 15 , further comprising
a driving voltage line which extends in the second direction and arranged in a same layer as the data line, and
the node connection line overlaps the driving voltage line.

20. The display apparatus of claim 15 , wherein
the shielding conductive layer receives a scanning signal.

Assignees

• Samsung Display Co Ltd

Inventors

• Oh Soohee
• Kang Chulkyu
• Kim Kyunghoon
• Kim Sunghwan
• Bang Hyunchol
• Lee Dongsun

Classifications

• H10D86/481

  integrated with passive devices, e.g. auxiliary capacitors · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title