Input sensing unit and electronic device including the same

Patent metadata

Field	Value
Publication number	US-2019079633-A1
Application number	US-201815964080-A
Country	US
Kind code	A1
Filing date	Apr 27, 2018
Priority date	Sep 8, 2017
Publication date	Mar 14, 2019
Grant date	—

Abstract

An input sensing unit includes may include first sensor patterns arranged in a first direction; first connecting patterns connecting the first sensor patterns; second sensor patterns arranged in a second direction; second connecting patterns connecting the second sensor patterns and being insulated from the first connecting patterns; third sensor patterns; and third connecting patterns connecting the third sensor patterns and being insulated from the first and second connecting patterns, the third connecting patterns having at least one portion having a first surface area crossing one of the first sensor patterns, wherein the at least one portion includes a second surface area overlapping the first sensor pattern, and wherein the second surface area is smaller than the first surface area.

First claim

What is claimed is:

1 . An input sensing unit comprising:
first sensor patterns arranged in a first direction; first connecting patterns connecting the first sensor patterns; second sensor patterns arranged in a second direction; second connecting patterns connecting the second sensor patterns and being insulated from the first connecting patterns; third sensor patterns; and third connecting patterns connecting the third sensor patterns and being insulated from the first and second connecting patterns, the third connecting patterns having at least one portion having a first surface area crossing one of the first sensor patterns, wherein the at least one portion comprises a second surface area overlapping the first sensor pattern, and wherein the second surface area is smaller than the first surface area.

2 . The input sensing unit of claim 1 , wherein the at least one portion comprises:
a first section overlapping the first sensor pattern; and a second section not overlapping the first sensor pattern, and wherein the first sensor pattern comprises an opening overlapping the second section.

3 . The input sensing unit of claim 2 , wherein the first section comprises a plurality of areas spaced apart from each other with the second section disposed therebetween.

4 . The input sensing unit of claim 2 , wherein at least one of the first sensor patterns comprise:
a plurality of first mesh lines each extending in a first direction; and a plurality of second mesh lines each extending in a second direction crossing the first direction at cross points at which the first mesh lines and the second mesh lines cross each other, the plurality of first and second mesh lines defining a plurality of mesh openings, wherein the first section overlaps at least one of cross points and the second section overlaps at least one of the mesh openings.

5 . The input sensing unit of claim 4 , wherein the first section extends in at least one of the first direction and the second direction, and overlap at least one of the first mesh lines and the second mesh lines, and
wherein the at least one of the mesh lines extends in a direction crossing the first section.

6 . The input sensing unit of claim 4 , wherein the first section has a generally linear shape extending in a different direction than the first direction and the second direction.

7 . The input sensing unit of claim 2 , wherein at least one of the first sensor patterns comprises:
a plurality of first mesh lines extending in a first direction; and a plurality of second mesh lines extending in a second direction crossing the first direction defining cross points and openings overlapping the first mesh lines, wherein the first section is disposed between the cross points to overlap the first mesh lines and the second mesh lines and not overlap the cross points, and wherein the second section overlaps the openings.

8 . The input sensing unit of claim 7 , wherein the first section has a generally zigzag shape comprising a portion extending in the first direction and a portion extending in the second direction.

9 . The input sensing unit of claim 1 , wherein the first connecting pattern is disposed on a layer different from that of the second connecting pattern, and the first connecting pattern is disposed on the same layer as that of the third connecting pattern.

10 . The input sensing unit of claim 9 , further comprising an insulation layer disposed between the first connecting pattern and the second connecting pattern,
wherein at least a part of the second sensor patterns is formed to pass through the insulation layer and be connected to the second connecting pattern, and wherein at least a part of the third sensor patterns is formed to pass through the insulation layer and be connected to the third connecting pattern.

11 . The input sensing unit of claim 1 , wherein the second sensor pattern surrounds the third sensor pattern.

12 . An electronic device comprising:
a display unit configured to display an image; and an input sensing unit comprising a touch sensor including:
a first sensing electrode disposed on the display unit to receive a first signal;
a second sensing electrode configured to receive a second signal and form capacitance with the first sensing electrode; and
a noise sensor comprising a third sensing electrode configured to receive a third signal different from the first and second signals,
wherein the third electrode comprises:
a plurality of sensor patterns arranged in a first direction; and
a plurality of connecting patterns disposed between adjacent sensor patterns of the plurality of sensor patterns to connect the adjacent sensor patterns to each other, and
wherein at least some of the plurality of connecting patterns comprise:
a plurality of overlap portions spaced apart from each other and overlapping the first sensing electrode; and
a connecting portion disposed between the overlap portions and not overlapping the first sensing electrode.

13 . The electronic device of claim 12 , wherein the first sensing electrode comprises an opening overlapping the connecting portion.

14 . The electronic device of claim 13 , wherein the first sensing electrode comprises a plurality of mesh lines crossing each other at cross points,
wherein at least one of the plurality of overlap portions overlap one of the cross points of the mesh lines, and wherein the mesh lines do not overlap the connecting portions.

15 . The electronic device of claim 12 , wherein at least one of the connecting patterns comprise:
a first portion having a first surface area crossing the first sensing electrode; and a second portion having a second surface area overlapping the first sensing electrode, and wherein the second surface area is less than the first surface area.

16 . The electronic device of claim 12 , wherein the first sensing electrode comprises a plurality of mesh lines crossing each other, and crossing the connecting patterns at the plurality of overlap portions.

17 . The electronic device of claim 12 , wherein the first sensing electrode further comprises:
a plurality of first sensor patterns arranged in a second direction crossing the first direction; and a plurality of first connecting patterns respectively disposed between adjacent ones of the plurality of first sensor patterns to connect adjacent first sensor patterns to each other, wherein the second sensing electrode further comprises: a plurality of second sensor patterns arranged in the first direction; and a plurality of second connecting patterns respectively disposed between adjacent ones of the plurality of second sensor patterns to connect adjacent second sensor patterns to each other, and wherein the connecting patterns are spaced apart from the first connecting patterns and the second connecting patterns.

18 . The electronic device of claim 17 , wherein the connecting patterns are disposed on the same layer as that of the first connecting patterns and disposed on a layer different from that of the second connecting pattern.

19 . The electronic device of claim 17 , wherein the first sensing electrode is supplied with an alternating current voltage.

20 . The electronic device of claim 12 , wherein the display unit comprises an organic light emitting diode comprising a first electrode, a second electrode disposed on the first electrode, and a light emitting layer disposed between the first electrode and the second electrode, a

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Gayoung
• Chung Seunghwan
• Kim Doik
• Jung Yeonsung
• Han Inyoung

Classifications

• 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

• H01L27/323

  Electricity · mapped topic

• 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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0418 Primary

  for error correction or compensation, e.g. based on parallax, calibration or alignment · CPC title