# US 10,310,685 B2 · Touch screen panel, method of manufacturing touch screen panel, and touch display device including touch screen panel

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- Number: US 10,310,685 B2
- Document ID: US10310685B2
- Status: Granted
- Kind: B2
- Application number: 15/359,624
- Filed: 2016-11-23
- Published: 2017-06-15
- Granted: 2019-06-04
- Earliest claimed: 2015-12-11
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: SangGab Kim; Ji Hun Kim; Yu-Gwang Jeong
- Web page: https://patentgrep.com/patent/US10310685B2

## CPC

- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- 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}
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- 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 59/40: OLEDs integrated with touch screens
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A touch screen panel includes: a first touch electrode disposed on a substrate and extending in a first direction, the first touch electrode including first mesh patterns formed of crossing metal wirings including fine patterns; and a second touch electrode disposed on the substrate and extending in a second direction crossing the first direction, the second touch electrode including second mesh patterns formed of crossing of metal wirings including fine patterns.

## Claims

### Claim 1

A touch screen panel comprising:
a first touch electrode disposed on a substrate and extending in a first direction, the first touch electrode comprising first mesh patterns formed of crossing metal wirings comprising fine patterns; and
a second touch electrode disposed on the substrate and extending in a second direction crossing the first direction, the second touch electrode comprising second mesh patterns formed of crossing of metal wirings comprising fine patterns,
wherein a pitch of the fine patterns of the first mesh patterns and/or the second mesh patterns is less than 150 nm.

### Claim 2 (depends on 1)

The touch screen panel of claim 1, wherein a transmissivity of the metal wirings of the first mesh patterns and/or the second mesh patterns is greater than 50%.

### Claim 3 (depends on 1)

The touch screen panel of claim 1, wherein:
each of the metal wirings comprises pattern portions formed of metal material and space portions disposed between the pattern portions; and
a sum of widths of the pattern portions is less than a sum of widths of the space portions.

### Claim 4 (depends on 1)

The touch screen panel of claim 1, further comprising:
a first protection layer disposed between the substrate and the first touch electrode; and
a second protection layer disposed on the first touch electrode and the second touch electrode.

### Claim 5 (depends on 4)

The touch screen panel of claim 4, wherein a refractive index of the first protection layer is greater than 1.7 and less than 1.8.

### Claim 6 (depends on 5)

The touch screen panel of claim 5, wherein a refractive index of the second protection layer is greater than 1.6 and less than 1.75.

### Claim 7 (depends on 6)

The touch screen panel of claim 6, wherein a refractive index of the first protection layer is different from a refractive index of the second protection layer.

### Claim 8 (depends on 4)

The touch screen panel of claim 4, wherein the first protection layer comprises at least one material selected from the group consisting of silicon oxide (SiOx), silicon nitride (SiNx), and aluminum oxide (AlOx).

### Claim 9 (depends on 8)

The touch screen panel of claim 8, wherein the first protection layer comprises:
a first layer comprising an organic material; and
a second layer overlapping the first layer, the second layer comprising silicon oxide (SiOx).

### Claim 10 (depends on 4)

The touch screen panel of claim 4, wherein the second protection layer comprises at least one material selected from the group consisting of silicon oxide (SiOx), silicon nitride (SiNx), and aluminum oxide (AlOx).

### Claim 11 (depends on 1)

The touch screen panel of claim 1, wherein the first touch electrode is disposed on a different layer than the second touch electrode.

### Claim 12 (depends on 11)

The touch screen panel of claim 11, further comprising:
an insulation layer insulating the first touch electrode and the second first touch electrode.

### Claim 13 (depends on 1)

The touch screen panel of claim 1, wherein the first touch electrode is disposed on a same layer as the second touch electrode.

### Claim 14 (depends on 13)

The touch screen panel of claim 13, wherein:
the first mesh patterns are connected with each other; and
the second mesh patterns are separated from each other.

### Claim 15 (depends on 14)

The touch screen panel of claim 14, further comprising:
a connecting electrode connecting the second mesh patterns.

### Claim 16

A touch display device comprising:
a display panel configured to display an image; and
a touch screen panel disposed on the display panel, the touch screen panel comprising:
a first touch electrode disposed on a substrate and extending in a first direction, the first touch electrode comprising first mesh patterns formed of crossing metal wirings comprising fine patterns; and
a second touch electrode disposed on the substrate and extending in a second direction crossing the first direction, the second touch electrode comprising second mesh patterns formed of crossing of metal wirings comprising fine patterns,
wherein a pitch of the fine patterns of the first mesh patterns and/or the second mesh patterns is less than 150 nm.

### Claim 17 (depends on 16)

The touch display device of claim 16, wherein the display panel comprises:
a first substrate comprising a thin film transistor;
a first electrode electrically connected to the thin film transistor;
an organic light emitting diode disposed on the thin film transistor;
a second electrode covering the organic light emitting diode; and
a second substrate disposed on the second electrode.

### Claim 18 (depends on 16)

The touch display device of claim 16, wherein the display panel comprises:
a first substrate comprising a thin film transistor;
a second substrate facing the lower substrate; and
a liquid crystal layer disposed between the first substrate and the second substrate.

### Claim 19

A method of manufacturing a touch screen panel, the method comprising:
forming a first protection layer on a substrate;
forming, on the first protection layer, a first touch electrode extending in a first direction, the first touch electrode comprising first mesh patterns formed of crossing metal wirings comprising fine patterns, the first protection layer being, in a third direction crossing the first direction, between the first touch electrode and the substrate;
forming, on the first protection layer, a second touch electrode extending in a second direction crossing the first direction, the second touch electrode comprising second mesh patterns formed of crossing metal wirings comprising fine patterns, the first protection layer being, in the third direction, between the second touch electrode and the substrate; and
forming a second protection layer on the first touch electrode and the second touch electrode.

### Claim 20 (depends on 19)

The method of claim 19, wherein a pitch of the fine patterns of the first mesh patterns and/or the second mesh patterns is less than 150 nm.

### Claim 21 (depends on 19)

The method of claim 19, wherein a transmissivity of the metal wirings of the first mesh patterns and/or the second mesh patterns is greater than 50%.

### Claim 22 (depends on 19)

The method of claim 19, wherein:
each of the metal wirings comprises pattern portions formed of metal material and space portions disposed between the pattern portions; and
a sum of widths of the pattern portions is less than a sum of widths of the pace portions.

### Claim 23 (depends on 19)

The method of claim 19, wherein a refractive index of the first protection layer is greater than 1.7 and less than 1.8.

### Claim 24 (depends on 23)

The method of claim 23, wherein a refractive index of the second protection layer is greater than 1.6 and less than 1.75.

### Claim 25 (depends on 24)

The method of claim 24, wherein a refractive index of the first protection layer is different than a refractive index of the second protection layer.

### Claim 26 (depends on 19)

The method of claim 19, wherein the first protection layer comprises at least one material selected from the group consisting of silicon oxide (SiOx), silicon nitride (SiNx), and aluminum oxide (AlOx).

### Claim 27 (depends on 26)

The method of claim 26, wherein the first protection layer comprises:
a first layer comprising an organic material; and
a second layer overlapping the first layer, the second layer comprising silicon oxide (SiOx).

### Claim 28 (depends on 19)

The method of claim 19, wherein the second protection layer comprises at least one material selected from the group consisting of silicon oxide (SiOx), silicon nitride (SiNx), and aluminum oxide (AlOx).

### Claim 29 (depends on 19)

The method of claim 19, wherein forming the first touch electrode and the second touch electrode comprises:
forming the first touch electrode on the first protection layer;
forming a first insulation layer on the first touch electrode;
forming the second touch electrode on the first insulation layer; and
forming a second insulation layer on the second touch electrode.

### Claim 30 (depends on 19)

The method of claim 19, wherein forming the first touch electrode and the second touch electrode comprises:
forming the first touch electrode and the second touch electrode on the first protection layer; and
forming an insulation layer on the first touch electrode and the second touch electrode.

### Claim 31 (depends on 30)

The method of claim 30, wherein:
the first mesh patterns are connected with each other; and
the second mesh patterns are separated from each other.

### Claim 32 (depends on 31)

The method of claim 31, further comprising:
forming a connecting electrode connecting the second mesh patterns.