# US 10,310,664 B2 · Display device with touch detection function

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- Number: US 10,310,664 B2
- Document ID: US10310664B2
- Status: Granted
- Kind: B2
- Application number: 15/978,890
- Filed: 2018-05-14
- Published: 2018-09-13
- Granted: 2019-06-04
- Earliest claimed: 2010-08-24
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Koji Noguchi; Yoshitoshi Kida; Kohei Azumi; Takayuki Nakanishi; Hiroshi Mizuhashi
- Web page: https://patentgrep.com/patent/US10310664B2

## CPC

- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G02F 1/13338: {Input devices, e.g. touch panels}
- G02F 1/133514: {Colour filters}
- G02F 1/133528: {Polarisers}
- G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes}
- G02F 1/134336: {Matrix}
- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/041661: {using detection at multiple resolutions, e.g. coarse and fine scanning; using detection within a limited area, e.g. object tracking window}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- G02F 1/133302: {Rigid substrates, e.g. inorganic substrates}
- G02F 2201/123: pixel
- 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: 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

A display device including a display section having a plurality of pixel electrodes; and a plurality of drive electrodes extending in a first direction and arranged side-by-side in a second direction. Each of the drive electrodes has a width in the second direction corresponding to a size of the two or more pixel electrodes, and has one or more slits extending in the first direction.

## Claims

### Claim 1

A display device with a touch detection function, comprising:
a pixel substrate;
an opposed substrate disposed to face the pixel substrate;
a plurality of drive electrodes arranged side-by-side on the pixel substrate,
a plurality of pixel electrodes facing the drive electrodes, the pixel electrodes being arranged in a matrix of a first direction and a second direction crossing the first direction; and
an image signal line on the pixel substrate, the image signal line extending in the second direction and supplying the pixel electrodes with the image signal,
wherein
each of the drive electrodes serves as a common drive electrode for displaying image and also serves as a drive electrode for touch sensing,
each of the drive electrodes has one or more inner-electrode slits,
an inter-electrode slit is formed between the drive electrodes adjacent to each other,
one of the one or more inner-electrode slits is discontinued by non-slit portions of the drive electrode,
the non-slit portions at least partially covers the image signal line, and
a width of the inner-electrode slit is 10 micrometers or less.

### Claim 2 (depends on 1)

The display device according to claim 1, further comprising a gate signal line extending in the first direction, wherein the non-slit portions at least partially cover the gate signal line.

### Claim 3 (depends on 1)

The display device according to claim 1, wherein the inner-electrode slit and the inter-electrode slit are each provided between the pixel electrodes adjacent to each other.

### Claim 4 (depends on 1)

The display device according to claim 1, wherein a width of the inter-electrode slit is 10 micrometers or less.

### Claim 5

A display device with a touch detection function, comprising:
a pixel substrate;
an opposed substrate disposed to face the pixel substrate;
a plurality of drive electrodes arranged side-by-side on the pixel substrate;
a plurality of pixel electrodes facing the drive electrodes, the pixel electrodes being arranged in a matrix of a first direction and a second direction crossing the first direction; and
an image signal line on the pixel substrate, the image signal line extending in the second direction and supplying the pixel electrodes with the image signal,
wherein
each of the drive electrodes serves as a common drive electrode for displaying image and also serves as a drive electrode for touch sensing,
each of the drive electrodes has one or more inner-electrode slits,
an inter-electrode slit is formed between the drive electrodes adjacent to each other,
one of the one or more inner-electrode slits is discontinued by non-slit portions of the drive electrode,
the non-slit portions at least partially covers the image signal line, and
a width of the inter-electrode slit is 10 micrometers or less.

### Claim 6 (depends on 5)

The display device according to claim 5, further comprising a gate signal line extending in the first direction, wherein the non-slit portions at least partially cover the gate signal line.

### Claim 7 (depends on 5)

The display device according to claim 5, wherein the inner-electrode slit and the inter-electrode slit are each provided between the pixel electrodes adjacent to each other.