# US 10,312,302 B2 · Flexible display device

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- Number: US 10,312,302 B2
- Document ID: US10312302B2
- Status: Granted
- Kind: B2
- Application number: 16/047,423
- Filed: 2018-07-27
- Published: 2018-11-22
- Granted: 2019-06-04
- Earliest claimed: 2015-03-10
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Hyoungwook Jang; Jeonghoon Bang; Soonsung Ahn
- Web page: https://patentgrep.com/patent/US10312302B2

## CPC

- H10K 59/40: OLEDs integrated with touch screens
- G06F 3/0443: {using a single layer of sensing electrodes}
- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
- G06F 2203/04111: 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
- G06F 2203/04112: 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
- H10K 2102/311: {Flexible OLED}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A flexible display device including a display panel including a base surface, a first touch sensor disposed on the base surface, and a second touch sensor disposed on the base surface and intersecting the first touch sensor. The first touch sensor includes first sensor parts, each of the first sensor parts comprising first conductive lines, and a first crossing part connecting two adjacent first sensor parts, the first crossing part comprising second conductive lines. The second touch sensor includes second sensor parts, each of the second sensor parts including third conductive lines, and a second crossing part including fourth conductive lines disposed between the second conductive lines, and a first connection electrode connecting the third conductive lines to the fourth conductive lines and insulated from the second conductive lines.

## Claims

### Claim 1

A flexible display device, comprising:
a display panel including a base surface;
a first touch sensor disposed on the base surface; and
a second touch sensor disposed on the base surface and intersecting the first touch sensor,
wherein:
the first touch sensor comprises:
first sensor parts, each of the first sensor parts comprising first conductive lines; and
a first crossing part connecting two adjacent first sensor parts, the first crossing part comprising second conductive lines; and
the second touch sensor comprises:
second sensor parts, each of the second sensor parts comprising third conductive lines; and
a second crossing part comprising:
fourth conductive lines disposed between the second conductive lines; and
a first connection electrode connecting the third conductive lines to the fourth conductive lines and insulated from the second conductive lines.

### Claim 2 (depends on 1)

The flexible display device of claim 1, wherein:
the first conductive lines, the second conductive lines, the third conductive lines, and the fourth conductive lines are disposed directly on the same layer; and
the first connection electrode is disposed on another layer that is different from the layer on which the first conductive lines, the second conductive lines, the third conductive lines, and the fourth conductive lines are disposed.

### Claim 3 (depends on 1)

The flexible display device of claim 1, wherein:
the first sensor parts are disposed along a first direction axis;
the second conductive lines extend along the first direction axis; and
the second sensor parts are disposed along a second direction axis intersecting the first direction axis.

### Claim 4 (depends on 3)

The flexible display device of claim 3, wherein the fourth conductive lines are spaced apart from the second conductive lines and extend along the first direction axis.

### Claim 5 (depends on 3)

The flexible display device of claim 3, wherein:
the fourth conductive lines are spaced apart from the second conductive lines; and
a portion of the fourth conductive lines are disposed in the first direction axis along with one of the second conductive lines.

### Claim 6 (depends on 1)

The flexible display device of claim 1, wherein the first conductive lines, the second conductive lines, the third conductive lines, and the fourth conductive lines are directly disposed on the base surface.

### Claim 7 (depends on 6)

The flexible display device of claim 6, further comprising an insulation layer disposed on the base surface and covering the first conductive lines, the second conductive lines, the third conductive lines, and the fourth conductive lines, and
wherein the first connection electrode is disposed on the insulation layer and connects the fourth conductive lines to the third conductive lines through contact holes that penetrate the insulation layer.

### Claim 8 (depends on 7)

The flexible display device of claim 7, wherein:
each of the first sensor parts has a mesh shape connecting the first conductive lines to each other; and
each of the second sensor parts has a mesh shape connecting the third conductive lines to each other.

### Claim 9 (depends on 8)

The flexible display device of claim 8, wherein each of the first conductive lines and the third conductive lines have a line width less than 10 μm.

### Claim 10 (depends on 7)

The flexible display device of claim 7, wherein the second crossing part further comprises a second connection electrode connecting the third conductive lines to each other, the second connection electrode disposed on the same layer with the first connection electrode.

### Claim 11 (depends on 10)

The flexible display device of claim 10, wherein the second crossing part further comprises a third connection electrode connecting the fourth conductive lines to each other, the third connection electrode disposed on the same layer with the first connection electrode.

### Claim 12 (depends on 11)

The flexible display device of claim 11, wherein each of the first conductive lines, the second conductive lines, and the third conductive lines comprise a transparent conductive oxide (TCO).

### Claim 13 (depends on 1)

The flexible display device of claim 1, wherein the display panel comprises:
a base member;
an organic light emitting diode disposed on the base member; and
an encapsulation layer covering the organic light emitting diode and providing the base surface.

### Claim 14 (depends on 1)

The flexible display device of claim 1, wherein the display panel comprises:
a base member;
an organic light emitting diode disposed on the base member; and
inorganic and organic films disposed on the organic light emitting diode, and providing the base surface.

### Claim 15 (depends on 14)

The flexible display device of claim 14, wherein the first conductive lines, the second conductive lines, the third conductive lines, and the fourth conductive lines are directly disposed on the base surface.

### Claim 16 (depends on 1)

The flexible display device of claim 1, wherein the display panel comprises:
a base member;
an organic light emitting diode disposed on the base member; and
an encapsulation plate covering the organic light emitting diode and providing the base surface.

### Claim 17

A display device, comprising:
a display panel including a base surface;
a first touch sensor disposed on the base surface; and
a second touch sensor disposed on the base surface and crossing the first touch sensor in a cross area,
wherein:
the first touch sensor comprises first conductive lines in the cross area; and
the second touch sensor comprises:
a connection line disposed between the first conductive lines in the cross area;
a second conductive line disposed outside the cross area; and
a connection electrode insulated from the first conductive lines, overlapped with the first conductive lines in the cross area, and connecting the connection line to the second conductive line.

### Claim 18 (depends on 17)

The display device of claim 17, wherein:
the first conductive lines, the second conductive line, and the connection line are directly disposed on the base surface; and
the connection electrode is disposed on another layer different from the base surface.

### Claim 19 (depends on 18)

The display device of claim 18, wherein the display panel comprises:
a base member;
an organic light emitting diode disposed on the base member; and
inorganic and organic films on the organic light emitting diode, and providing the base surface.

### Claim 20 (depends on 18)

The display device of claim 18, wherein the display panel comprises:
a base member;
an organic light emitting diode disposed on the base member; and
an encapsulation plate covering the organic light emitting diode and providing the base surface.