# US 2024/0206239 A1 · Display device

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- Number: US 2024/0206239 A1
- Document ID: US20240206239A1
- Status: Published application
- Kind: A1
- Application number: 18/461,728
- Filed: 2023-09-06
- Published: 2024-06-20
- Earliest claimed: 2022-12-19
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: INYOUNG JUNG
- Web page: https://patentgrep.com/patent/US20240206239A1

## CPC

- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/0443: {using a single layer of sensing electrodes}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 59/40: OLEDs integrated with touch screens
- G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads}
- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- 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: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A display device includes a display panel including a base layer including light-emitting areas and a non-light-emitting area adjacent to the light-emitting areas, a pixel defining layer disposed on the base layer and having openings defined, a partitioning wall disposed on the pixel defining layer, light-emitting elements, each including an anode disposed in a corresponding one of the openings, a cathode contacting the partitioning wall, and a light-emitting pattern disposed between the anode and the cathode, and an encapsulation layer covering the light-emitting elements, and an input sensor disposed on the display panel, the input sensor including conductive lines overlapping the partitioning wall. The partitioning wall may have line patterns defined therein by removing at least a portion of the partitioning wall, with the line patterns overlapping the non-light-emitting area, and at least some of the conductive lines may overlap the line patterns.

## Claims

### Claim 1

A display device comprising:
a display panel including:
a base layer including light-emitting areas and a non-light-emitting area adjacent to the light-emitting areas;
a pixel defining layer disposed on the base layer and having openings defined therein corresponding to the light-emitting areas;
a partitioning wall disposed on the pixel defining layer;
light-emitting elements, each including an anode disposed in a corresponding one of the openings defined in the pixel defining layer, a cathode disposed on the anode and contacting the partitioning wall, and a light-emitting pattern disposed between the anode and the cathode; and
an encapsulation layer covering the light-emitting elements; and
an input sensor disposed on the display panel, the input sensor including conductive lines, with the conductive lines overlapping the partitioning wall,
wherein the partitioning wall has line patterns defined therein by removing at least a portion of the partitioning wall, with the line patterns overlapping the non-light-emitting area, and
wherein at least some of the conductive lines overlap the line patterns.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the partitioning wall includes:
a lower layer including a conductive material and disposed on the pixel defining layer; and
an upper layer disposed on the lower layer and including a conductive material.

### Claim 3 (depends on 2)

The display device of claim 2, wherein the lower layer includes aluminum, and the upper layer includes titanium.

### Claim 4 (depends on 2)

The display device of claim 2, wherein each of the line patterns is formed by removing the upper layer and the lower layer to expose an upper surface of the pixel defining layer.

### Claim 5 (depends on 2)

The display device of claim 2, wherein each of the line patterns is formed by removing the upper layer to expose an upper surface of the lower layer.

### Claim 6 (depends on 2)

The display device of claim 2, wherein each of the line patterns is formed by removing the upper layer and a portion of the lower layer.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the partitioning wall includes:
first patterns, each surrounding each of the light-emitting elements corresponding thereto in a plan view of the display device; and
second patterns, at least one of the second patterns being disposed between adjacent ones of the first patterns,
wherein the line patterns non-overlap with the second patterns.

### Claim 8 (depends on 7)

The display device of claim 7, wherein some of the conductive lines overlap the second patterns.

### Claim 9 (depends on 7)

The display device of claim 7, wherein two of the second patterns adjacent to each other and spaced apart from each other are disposed between the adjacent ones of the first patterns.

### Claim 10 (depends on 2)

The display device of claim 2, wherein the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer sequentially stacked, and
wherein the first inorganic layer covers the line patterns.

### Claim 11 (depends on 10)

The display device of claim 10, wherein the organic layer is disposed on the first inorganic layer covering the line patterns.

### Claim 12 (depends on 10)

The display device of claim 10, further comprising capping patterns respectively disposed on the cathodes corresponding thereto, the capping patterns being covered with the first inorganic layer.

### Claim 13 (depends on 12)

The display device of claim 12, further comprising a dummy pattern disposed on the partitioning wall,
wherein the dummy pattern has dummy holes defined therein, with the dummy holes respectively overlapping the line patterns, and
wherein the dummy pattern includes:
a first pattern disposed on the upper layer and including a material the same as a material of the light-emitting patterns;
a second pattern disposed on the first pattern and including a material the same as a material of the cathodes; and
a third pattern disposed on the second pattern, and covered with the first inorganic layer, wherein the third pattern includes a material the same as a material of the capping patterns.

### Claim 14 (depends on 13)

The display device of claim 13, wherein each of the lower layer, the upper layer, the first pattern, the second pattern, and the third pattern includes an opening defined therein overlapping corresponding one of the light-emitting areas, and
wherein a width of the opening defined in the lower layer is greater than each of a width of the opening defined in the upper layer, a width of the opening defined in the first pattern, a width of the opening defined in the second pattern, and a width of the opening defined in the third pattern.

### Claim 15 (depends on 1)

The display device of claim 1, wherein the input sensor includes:
a first sensing insulating layer directly disposed on the encapsulation layer;
a first conductive layer disposed on the first sensing insulating layer;
a second sensing insulating layer covering the first conductive layer and disposed on the first sensing insulating layer;
a second conductive layer disposed on the second sensing insulating layer; and
a third sensing insulating layer covering the second conductive layer and disposed on the second sensing insulating layer,
wherein the conductive lines are included in the second conductive layer.

### Claim 16 (depends on 1)

The display device of claim 1, further comprising sacrificial patterns, wherein each of the sacrificial patterns is disposed on an edge of a corresponding one of the anodes, and is covered with a corresponding one of the light-emitting patterns and the pixel defining layer.

### Claim 17 (depends on 1)

The display device of claim 1, wherein each of the line patterns is disposed between four of the cathodes and has an ‘X’ shape in a plan view of the display device.

### Claim 18 (depends on 1)

The display device of claim 1, wherein the cathodes are electrically connected to each other via the partitioning wall.

### Claim 19 (depends on 1)

The display device of claim 1, wherein each of the conductive lines includes a transparent conductive material.

### Claim 20 (depends on 1)

The display device of claim 1, wherein the display panel includes at least one transistor disposed on the base layer and connected to a corresponding one of the anodes.