Display device including sensor and auxiliary sensor parts

Patent metadata

Field	Value
Publication number	US-10474295-B2
Application number	US-201715804758-A
Country	US
Kind code	B2
Filing date	Nov 6, 2017
Priority date	Nov 10, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

Provided is a display device including a display panel and an input sensing unit. The input sensing unit includes at least one insulation layer, an electrode, and an auxiliary electrode. The electrode includes sensor parts including a metal and having a mesh shape and connection parts connecting adjacent sensor parts of the sensor parts to each other. The auxiliary electrode overlaps the sensor parts, is connected to the sensor parts, and includes transparent conductive oxide.

First claim

What is claimed is:

1. A display device comprising:
a display panel configured to provide a base surface, the display panel comprising a plurality of emission areas spaced apart from each other and a non-emission area disposed between the plurality of emission areas; and
an input sensing unit directly disposed on the base surface,
wherein the input sensing unit comprises:
at least one insulation layer;
a first electrode comprising first sensor parts having a metal, a mesh shape and mesh holes corresponding to the plurality of emission areas, first connection parts configured to connect first sensor parts, which are adjacent to each other, of the first sensor parts, and first auxiliary sensor parts connected to the first sensor parts and having a transparent conductive oxide and overlapping the plurality of emission areas and the non-emission area; and
a second electrode comprising second sensor parts having a metal, a mesh shape and mesh holes corresponding to the plurality of emission areas, second connection parts configured to connect second sensor parts, which are adjacent to each other, of the second sensor parts, and second auxiliary sensor parts connected to the second sensor parts and having a transparent conductive oxide and overlapping the plurality of emission areas and the non-emission area,
wherein the first electrode and the second electrode are insulated from each other,
the first connection parts are disposed on the base surface and disposed under the insulation layer, and
the first sensor parts, the second sensor parts, and the second connection parts are disposed on the insulation layer.

2. The display device of claim 1 , wherein a first sensor part of the first sensor parts and a first auxiliary sensor part of the first auxiliary sensor parts, which correspond to each other, overlap each other with the insulation layer therebetween, and
the first sensor part of the first sensor parts and the first auxiliary sensor part of the first auxiliary sensor parts, which correspond to each other, are connected to each other through a first contact hole passing through the insulation layer.

3. The display device of claim 1 , wherein a first sensor part of the first sensor parts and a first connection part of the first connection parts, which correspond to each other, are connected to each other through a second contact hole passing through the insulation layer.

4. The display device of claim 3 , wherein the second sensor parts and the second connection parts have an integrated shape.

5. The display device of claim 1 , wherein the first auxiliary sensor parts are disposed on a same layer as the first connection parts.

6. The display device of claim 5 , wherein the first connection parts contact the first auxiliary sensor parts.

7. The display device of claim 6 , wherein the first electrode further comprises auxiliary connection parts configured to connect first auxiliary sensor parts, which are adjacent to each other, of the first auxiliary sensor parts, and
the first connection parts overlap the auxiliary connection parts.

8. The display device of claim 1 , further comprising a signal line connected to the first electrode,
wherein the signal line comprises at least one of a first line part connected to a first auxiliary sensor part of the first auxiliary sensor parts and a second line part connected to a first sensor part of the first sensor parts.

9. The display device of claim 8 , wherein the signal line comprises the first line part and the second line part,
the first line part and the second line part are disposed with the insulation layer therebetween, and
the first line part and the second line part are connected to each other through contact hole passing through the insulation layer.

10. The display device of claim 1 , wherein the first auxiliary sensor parts and the second auxiliary sensor parts are disposed on the insulation layer.

11. The display device of claim 10 , wherein the first sensor parts contact the first auxiliary sensor parts, and the second sensor parts contact the second auxiliary sensor parts.

12. The display device of claim 11 , wherein the first auxiliary sensor parts contact the insulation layer and are disposed between the insulation layer and the first sensor parts.

13. The display device of claim 11 , wherein the first sensor parts contact the insulation layer and are disposed between the insulation layer and the first auxiliary sensor parts.

14. The display device of claim 10 , wherein the second electrode further comprises second auxiliary connection parts configured to connect second auxiliary sensor parts, which are adjacent to each other, of the second auxiliary sensor parts.

15. The display device of claim 14 , wherein the second connection parts are disposed inside the second auxiliary connection parts, in a plan view.

16. A display device comprising:
a display panel comprising a plurality of emission areas spaced apart from each other and a non-emission area disposed between the plurality of emission areas; and
an input sensing unit disposed on the display panel,
wherein the input sensing unit comprises:
at least one insulation layer;
a first electrode comprising first sensor parts having a metal and a mesh shape and first connection parts configured to connect first sensor parts, which are adjacent to each other, of the first sensor parts;
a second electrode comprising second sensor parts having a metal and a mesh shape and second connection parts configured to connect second sensor parts, which are adjacent to each other, of the second sensor parts; and
auxiliary electrodes connected to corresponding sensor parts of the first sensor parts, second sensor parts and having a transparent conductive oxide and overlapping the plurality of emission areas and the non-emission area, and
wherein the first electrode and the second electrode are insulated from each other, and
the first electrode and the second electrode comprise a plurality of mesh holes corresponding to the plurality of emission areas.

17. A display device comprising:
a display panel comprising a plurality of emission areas spaced apart from each other and a non-emission area disposed between the plurality of emission areas; and
an input sensing unit comprising a plurality of electrodes disposed on the display panel,
wherein the plurality of electrodes comprise:
sensor parts spaced apart from each other, each of the sensor parts comprises a metal, and having a mesh shape;
auxiliary sensor parts having a transparent conductive oxide and connected to corresponding sensor parts of the sensor parts and overlapped with the corresponding sensor parts of the sensor parts,
wherein the sensor parts overlap the non-emission area and comprise a plurality of mesh holes corresponding to the plurality of emission areas, and
the auxiliary sensor parts overlap the plurality of emission areas and the non-emission area.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Hwa-Jeong
• Kwak Nayun
• Jun Sanghyun
• Jung Changyong

Classifications

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• H01L27/323

  Electricity · mapped topic