# US 12,111,993 B2 · Display device with touch detection function and electronic apparatus

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- Number: US 12,111,993 B2
- Document ID: US12111993B2
- Status: Granted
- Kind: B2
- Application number: 18/516,394
- Filed: 2023-11-21
- Published: 2024-03-14
- Granted: 2024-10-08
- Earliest claimed: 2012-11-30
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Koji Ishizaki; Hayato Kurasawa; Kohei Azumi
- Web page: https://patentgrep.com/patent/US12111993B2

## CPC

- G06F 3/0412: {Digitisers structurally integrated in a display}
- G02F 1/13338: {Input devices, e.g. touch panels}
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G02F 1/133514: {Colour filters}
- G02F 1/134336: {Matrix}
- G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G02F 2201/123: pixel
- G02F 2201/52: RGB geometrical arrangements
- G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
- G06F 2203/04108: Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
- 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
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

According to an aspect, a display device with a touch detection function includes: a substrate; a drive electrode that extends in a first direction; and a plurality of touch detection electrodes that are metal wirings extending in a second direction different from the first direction. The metal wirings are arranged with a predetermined pitch so as to make capacitive coupling with the drive electrode.

## Claims

### Claim 1

A display device with a touch detection device, comprising
a plurality of scan lines each extending in a first direction;
a plurality of signal lines each extending in a second direction crossing the first direction;
a plurality of display elements that are surrounded by the scan lines and the signal lines; and
a plurality of touch detection electrodes including a first thin metal wire, a second thin metal wire, a third thin metal wire, and a fourth thin metal wire that are opposed to the display elements,
wherein
the first thin metal wire, the second thin metal wire, the third thin metal wire, and the fourth thin metal wire each are straight line,
the first thin metal wire and the fourth thin metal wire each extend in a third direction different from the first and second directions,
the second thin metal wire and the third thin metal wire each extend in a fourth direction different from the first, second, and third directions,
the first thin metal wire crosses the third thin metal wire,
the second thin metal wire crosses the fourth thin metal wire,
one end of the first thin metal wire is connected to one end of the second thin metal wire at a first connection point,
one end of the third thin metal wire is connected to one end of the third thin metal wire at a second connection point, and
the first thin metal wire, the second thin metal wire, the third thin metal wire, and the fourth thin metal wire each cross the scan lines.

### Claim 2 (depends on 1)

The display device with a touch detection device according to claim 1,
wherein the touch detection electrodes are arranged in a same layer.

### Claim 3 (depends on 1)

The display device with a touch detection device according to claim 1,
wherein a pitch of the display elements is less than each of a first length of the first thin metal wire, a second length of the second thin metal wire, a third length of the third thin metal wire, and the fourth length of the fourth thin metal wire.

### Claim 4 (depends on 1)

The display device with a touch detection device according to claim 1,
wherein the touch detection electrodes are coupled to a touch detection circuit to detect an external approaching object.

### Claim 5 (depends on 1)

The display device with a touch detection device according to claim 1,
wherein the touch detection electrodes extend overall in the second direction.

### Claim 6 (depends on 1)

The display device with a touch detection device according to claim 1,
wherein the first thin metal wire, the second thin metal wire, the third thin metal wire, and the fourth thin metal wire are disposed on a same layer.

### Claim 7 (depends on 1)

The display device with a touch detection device according to claim 1,
wherein the first connection point and the second connection point are aligned along the first direction.