Display device including a conductive layer overlapping a driving voltage line

Patent metadata

Field	Value
Publication number	US-11711951-B2
Application number	US-202117157003-A
Country	US
Kind code	B2
Filing date	Jan 25, 2021
Priority date	May 11, 2016
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

A display device includes: a plurality of pixels each including a driving thin film transistor and a storage capacitor, wherein each of the pixels further includes: a driving semiconductor layer including a driving channel region, a driving source region, and a driving drain region; a first electrode layer, a portion of the first electrode layer overlapping the driving channel region; a second electrode layer overlapping the first electrode layer; a node connection line having a first side connected to the first electrode layer; a pixel electrode overlapping the first electrode layer and the second electrode layer; and a shielding layer between the first electrode layer and the pixel electrode and overlapping the first electrode layer, the node connection line, and the pixel electrode.

First claim

What is claimed is:

1. A display device comprising:
a first transistor comprising a first semiconductor layer and a first gate electrode overlapping the first semiconductor layer;
a storage capacitor overlapping the first semiconductor layer and comprising a first electrode and a second electrode on the first electrode;
a data line extending in a first direction;
a scan line extending in a second direction crossing the first direction;
a second transistor electrically coupled to the data line and comprising a second semiconductor layer that is integrally coupled to the first semiconductor layer;
a driving voltage line extending in the first direction, wherein the driving voltage line and the data line are disposed on a same layer;
a third transistor comprising a third semiconductor layer that is integrally coupled to the first semiconductor layer of the first transistor; and
a conductive layer disposed on the driving voltage line and electrically coupled to the driving voltage line, the conductive layer comprising:
a first part overlapping a portion of the driving voltage line; and
a second part extending from the first part in the second direction, the second direction crossing the first direction,
wherein the scan line overlaps a portion of the second semiconductor layer of the second transistor and a portion of the third semiconductor layer of the third transistor, and
wherein the second part of the conductive layer overlaps a portion of the third semiconductor layer of the third transistor.

2. The display device of claim 1 , further comprising:
a first insulating layer over the scan line, wherein the data line and the driving voltage line are disposed over the first insulating layer.

3. The display device of claim 1 , further comprising:
a fourth transistor comprising a fourth semiconductor layer that is integrally coupled to a first semiconductor layer of the first transistor; and
a light emitting diode including a first electrode, an emission layer, and a second electrode,
wherein
the first electrode of the light emitting diode is electrically coupled to the fourth transistor by a first connection layer and a second connection layer,
the first connection layer is disposed on a same layer as the data line, and
the second connection layer is disposed on a same layer as the conductive layer.

4. The display device of claim 3 , wherein
a center of a contact area between the first electrode of the light emitting diode and the second connection layer is spaced apart from a center of a contact area between the second connection layer and the first connection layer.

5. A display device comprising:
a first transistor comprising a first semiconductor layer and a first gate electrode overlapping the first semiconductor layer;
a storage capacitor overlapping the first semiconductor layer and comprising a first electrode and a second electrode on the first electrode;
a data line extending in a first direction;
a second transistor electrically coupled to the data line and comprising a second semiconductor layer that is integrally coupled to the first semiconductor layer;
a driving voltage line extending in the first direction, wherein the driving voltage line and the data line are disposed on a same layer; and
a conductive layer disposed on the driving voltage line and electrically coupled to the driving voltage line, the conductive layer comprising:
a first part overlapping a portion of the driving voltage line; and
a second part extending from the first part in a second direction, the second direction crossing the first direction,
wherein the driving voltage line is electrically connected to the second electrode of the storage capacitor, and
a first contact region between the conductive layer and the driving voltage line is spaced apart from a second contact region between the driving voltage line and the second electrode of the storage capacitor.

6. A display device comprising:
a first transistor comprising a first semiconductor layer and a first gate electrode overlapping the first semiconductor layer;
a storage capacitor overlapping the first semiconductor layer and comprising a first electrode and a second electrode on the first electrode;
a data line extending in a first direction;
a second transistor electrically coupled to the data line and comprising a second semiconductor layer that is integrally coupled to the first semiconductor layer;
a driving voltage line extending in the first direction;
a conductive layer disposed on the driving voltage line and electrically coupled to the driving voltage line, the conductive layer comprising:
a first part overlapping a portion of the driving voltage line; and
a second part extending from the first part in a second direction, the second direction crossing the first direction;
a third transistor comprising a third semiconductor layer that is integrally coupled to the first semiconductor layer; and
a light emitting diode including a first electrode, an emission layer, and a second electrode;
wherein
the first electrode of the light emitting diode is electrically coupled to the third transistor by a first connection layer and a second connection layer,
the first connection layer is disposed on a same layer as the data line, and
the second connection layer is disposed on a same layer as the conductive layer.

7. The display device of claim 6 , wherein
a center of a contact area between the first electrode of the light emitting diode and the second connection layer is spaced apart from a center of a contact area between the second connection layer and the first connection layer.

8. The display device of claim 6 , wherein
the driving voltage line and the data line are disposed on a same layer.

9. The display device of claim 6 , further comprising:
a scan line extending in the second direction and overlapping a portion of the second semiconductor layer of the second transistor; and
a fourth transistor comprising a fourth semiconductor layer that is integrally coupled to the first semiconductor layer of the first transistor, wherein the scan line overlaps a portion of the fourth semiconductor layer of the third transistor, and
the second part of the conductive layer overlaps a portion of the semiconductor layer of the third transistor.

10. The display device of claim 6 , wherein
the driving voltage line is electrically connected to the second electrode of the storage capacitor, and
a first contact region between the conductive layer and the driving voltage line is spaced apart from a second contact region between the driving voltage line and the second electrode of the storage capacitor.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Seungkyu
• Kwon Taehoon
• Kim Byungsun

Classifications

• H10W42/20

  protecting against electromagnetic or particle radiation, e.g. light, X-rays, gamma-rays or electrons · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/441 Primary

  Interconnections, e.g. scanning lines · CPC title

• H10K59/126 Primary

  Shielding, e.g. light-blocking means over the TFTs · CPC title

• G09G3/3266

  Details of drivers for scan electrodes · CPC title