# US 2017/0255289 A1 · Touch display panel

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- Number: US 2017/0255289 A1
- Document ID: US20170255289A1
- Status: Published application
- Kind: A1
- Application number: 15/427,170
- Filed: 2017-02-08
- Published: 2017-09-07
- Earliest claimed: 2016-03-04
- Assignees: Innolux Corporation
- Applicants: Innolux Corporation
- Inventors: Hong-Sheng Hsieh; Hao-Yu Liou; Yu-Sheng Chen; Jian-Cheng Chen
- Web page: https://patentgrep.com/patent/US20170255289A1

## CPC

- G06F 3/044: by capacitive means
- G06F 3/0448: {Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality}
- G02F 1/13338: {Input devices, e.g. touch panels}
- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F 3/0412: {Digitisers structurally integrated in a display}
- 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 touch display panel includes a display structure and a touch structure. The display structure includes pixels having a first pitch P1. The touch structure includes a touch layer having slits and dummy clefts. The slits and the dummy clefts have a second pitch P2 and a third pitch P3, respectively. Two adjacent vertices of each slit define a line segment having a length Ly. A first moire ratio (MR1) defined as P   2 P   1 satisfies: 20.7%×A1+8.5%×B1−3%≦MR1≦12.7%×A1+16.5%×B1+3%, wherein A1 is an integer from 0 to 3, B1 is an integer from 1 to 3, and 0≦B1−A1≦1. A second moire ratio (MR2) defined as P   3 P   1 satisfies: 20.7%×A2+8.5%×B2−3%≦MR2≦12.7%×A2+16.5%×B2+3%, wherein A2 is an integer from 0 to 3, B2 is an integer from 1 to 3, and 0≦B2−A2≦1. An arrangement ratio (LR) defined as Ly P   1 satisfies: (2C+1)×25%−20%≦LR≦(2C+1)×25%+20%, wherein C is an integer from 0 to 11.

## Claims

### Claim 1

A touch display panel, comprising:
a display structure comprising a plurality of pixels, the pixels having a first pitch P1; and
a touch structure comprising a touch layer, the touch layer having a plurality of slits and a plurality of dummy clefts, each of the slits having a plurality of vertices, wherein the slits defines a plurality of traces and a plurality of touch regions, and the dummy clefts are disposed in the touch regions,
wherein the slits have a second pitch P2 in a first direction, the dummy clefts have a third pitch P3 in the first direction, and adjacent two of the vertices of each of the slits define a line segment, wherein the line segment has a first length Ly in a second direction perpendicular to the first direction;
wherein a first moire ratio MR1 is defined as
P


2
P


1
,
and the first moire ratio MR1 substantially satisfies a formula (1):
20.7%×A1+8.5%×B1−3%≦MR1≦12.7%×A1+16.5%×B1+3% (1),
wherein A1 is an integer from 0 to 3, B1 is an integer from 1 to 3, and 0≦B1−A1≦1;
wherein a second moire ratio MR2 is defined as
P


3
P


1
,
and the second moire ratio MR2 substantially satisfies a formula (2):
20.7%×A2+8.5%×B2−3%≦MR2≦12.7%×A2+16.5%×B2+3% (2),
wherein A2 is an integer from 0 to 3, B2 is an integer from 1 to 3, and 0≦B2−A2≦1;
wherein an arrangement ratio LR is defined as
Ly
P


1
,
and the arrangement ratio LR substantially satisfies a formula (3):
(2C+1)×25%−20%≦LR≦(2C+1)×25%+20% (3),
wherein C is an integer from 0 to 11.

### Claim 2 (depends on 1)

The touch display panel according to claim 1, wherein A1=A2, and B1=B2.

### Claim 3 (depends on 1)

The touch display panel according to claim 1, wherein the third pitch P3 is substantially equal to the second pitch P2.

### Claim 4 (depends on 1)

The touch display panel according to claim 1, wherein the second pitch P2 and the third pitch P3 satisfy: 0.66≦P2/P3≦1.5.

### Claim 5 (depends on 1)

The touch display panel according to claim 1, wherein the first length Ly is smaller than or equal to 160 μm.

### Claim 6 (depends on 1)

The touch display panel according to claim 1, wherein the line segment has a second length Lx in the first direction, and the second length Lx is not equal to the first length Ly.

### Claim 7 (depends on 1)

The touch display panel according to claim 1, wherein the line segment has a second length Lx in the first direction, and the second length Lx is substantially equal to the first length Ly.

### Claim 8 (depends on 1)

The touch display panel according to claim 1, wherein the line segment has a third length, the dummy clefts have a fourth length, and the third length is larger than the fourth length.

### Claim 9 (depends on 1)

The touch display panel according to claim 1, wherein the touch regions comprise transmission sensing zones and reception sensing zones.

### Claim 10 (depends on 1)

The touch display panel according to claim 1, wherein the touch layer comprises a transparent electrode layer.