# US 12,602,129 B2 · Touch control structure and display apparatus with touch signal lines with double-layer region in a corner area

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- Number: US 12,602,129 B2
- Document ID: US12602129B2
- Status: Granted
- Kind: B2
- Application number: 18/943,093
- Filed: 2024-11-11
- Published: 2025-02-27
- Granted: 2026-04-14
- Earliest claimed: 2023-09-25
- Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd.; BOE Technology Group Co., Ltd.
- Inventors: Yu Wang; Erjin Zhao; Yi Zhang; Ping Wen; Wei Wang; Yang Zeng; Yuanqi Zhang; Lingran Wang; Jun Yan
- Web page: https://patentgrep.com/patent/US12602129B2

## CPC

- G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- 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}
- 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)

## Abstract

A touch control structure includes a plurality of touch signal lines in a peripheral area. A respective touch signal line includes a double-layer structure in a double-layer region and a single-layer structure in a single-layer region. The peripheral area includes a first sub-area on a first side, a second sub-area on a second side, a third sub-area on a third side, a fourth sub-area on a fourth side, of the touch control area. The first sub-area includes a side region, and one or more corner regions. The double-layer region and the single-layer region are in the first sub-area, the first sub-area has a first shortest width along a direction from the touch control area to the first sub-area, the first shortest width is greater than a shortest width of at least one of sub-areas of the peripheral area other than the first sub-area.

## Claims

### Claim 1

A touch control structure, comprising a plurality of touch electrodes in a touch control area and a plurality of touch signal lines in a peripheral area;
wherein a respective one of the plurality of touch signal lines comprises a double-layer structure in a double-layer region and a single-layer structure in a single-layer region;
the peripheral area comprises a first sub-area on a first side of the touch control area, a second sub-area on a second side of the touch control area, a third sub-area on a third side of the touch control area, a fourth sub-area on a fourth side of the touch control area;
the first sub-area comprises a side region, and one or more corner regions respectively at one or more corners of the touch control structure;
wherein the double-layer region and the single-layer region are in the first sub-area, the first sub-area has a first shortest width along a direction from the touch control area to the first sub-area, the first shortest width is greater than a shortest width of at least one of sub-areas of the peripheral area other than the first sub-area;
a plurality of adjacent double-layer structures in the double-layer region are respectively connected to a plurality of adjacent single-layer structures in the single-layer region;
the double-layer region is at least partially in the one or more corner regions; and
a region where the double-layer structure transitions to the single-layer structure is at least partially in the one or more corner regions.

### Claim 2 (depends on 1)

The touch control structure of claim 1, wherein at least two of the plurality of adjacent single-layer structures are respectively in a first layer and a second layer; and
the touch control structure further comprises a touch insulating layer between the first layer and the second layer.

### Claim 3 (depends on 1)

The touch control structure of claim 1, wherein a first sub-region is a sub-region where multiple touch signal lines are connected to an integrated circuit.

### Claim 4 (depends on 1)

The touch control structure of claim 1, wherein the double-layer region is at least partially in at least one of the second sub-area, the third sub-area, or the fourth sub-area.

### Claim 5 (depends on 1)

The touch control structure of claim 1, wherein the single-layer region is in the side region.

### Claim 6 (depends on 1)

The touch control structure of claim 1, wherein a respective double-layer structure comprises a first portion in the first layer and a second portion in the second layer;
a first adjacent respective single-layer structure in the second layer is connected to a respective second portion of a first adjacent double-layer structure; and
a second adjacent respective single-layer structure in the first layer is connected to a respective first portion of a second adjacent double-layer structure.

### Claim 7 (depends on 6)

The touch control structure of claim 6, wherein the first portion and the second portion are connected through a connecting via extending through the touch insulating layer.

### Claim 8 (depends on 1)

The touch control structure of claim 1, wherein multiple first double-layer structures respectively of multiple touch signal lines of the plurality of touch signal lines are clustered in a first region;
multiple first single-layer structures respectively of the multiple touch signal lines of the plurality of touch signal lines are clustered in a second region;
the multiple first double-layer structures are substantially parallel to each other, and respectively extend along a first direction;
the multiple first single-layer structures are substantially parallel to each other, and respectively extend along a second direction;
at least two of the multiple first single-layer structures are respectively in the first layer and the second layer; and
the first direction and the second direction are different from each other, and intersecting each other at an angle greater than zero.

### Claim 9 (depends on 8)

The touch control structure of claim 8, wherein multiple connecting points respectively connecting the multiple first double-layer structures and the multiple first single-layer structures are arranged along a seventh direction; and
the second direction and the seventh direction intersect each other at an angle in a range of 6 degrees to 15 degrees.

### Claim 10 (depends on 1)

The touch control structure of claim 1, wherein the plurality of touch electrodes comprise a plurality of first mesh electrodes arranged in a plurality of rows and a plurality of second mesh electrodes arranged in a plurality of columns; and
the plurality of first mesh electrodes and the plurality of second mesh electrodes are in the second layer.

### Claim 11 (depends on 10)

The touch control structure of claim 10, further comprising:
a plurality of touch electrode bridges in the first layer; and
vias extending through the touch insulating layer;
wherein the plurality of touch electrode bridges respectively extend through the vias to respectively connect adjacent second mesh blocks in a respective column of a plurality of column of the plurality of second mesh electrodes.

### Claim 12 (depends on 10)

The touch control structure of claim 10, wherein the plurality of touch signal lines comprise:
a plurality of first touch signal lines respectively connected to the plurality of first mesh electrodes;
a plurality of second touch signal lines respectively connected to first terminals of the plurality of second mesh electrodes; and
a plurality of third touch signal lines respectively connected to second terminals of the plurality of second mesh electrodes.

### Claim 13 (depends on 1)

The touch control structure of claim 1, wherein multiple second single-layer structures respectively of multiple touch signal lines of the plurality of touch signal lines are clustered in a third region;
multiple second double-layer structures respectively of the multiple touch signal lines of the plurality of touch signal lines are clustered in a fourth region;
the multiple second single-layer structures are substantially parallel to each other, and respectively extend along a third direction;
the multiple second double-layer structures are substantially parallel to each other, and respectively extend along a fifth direction;
at least two of the multiple second single-layer structures are respectively in the first layer and the second layer;
the multiple second single-layer structures are respectively connected to the multiple second double-layer structures; and
multiple second connecting points respectively connecting the multiple second single-layer structures and the multiple second double-layer structures are arranged along a sixth direction.

### Claim 14 (depends on 1)

The touch control structure of claim 1, wherein multiple third double-layer structures respectively of multiple touch signal lines of the plurality of touch signal lines are clustered in a fifth region;
multiple fourth double-layer structures respectively of the multiple touch signal lines of the plurality of touch signal lines are clustered in a sixth region;
multiple third single-layer structures respectively of the multiple touch signal lines of the plurality of touch signal lines are clustered in a seventh region;
a respective one of the multiple third single-layer structures is a half loop structure connecting a respective one of the multiple third double-layer structures and a respective one of the multiple fourth double-layer structures;
the half loop structure comprises two parallel portions respectively extending along a second direction and a connecting portion connecting the two parallel portions together;
at least two of the multiple third single-layer structures are respectively in the first layer and the second layer;
the multiple third double-layer structures are substantially parallel to each other, and respectively extend along a first direction;
the multiple fourth double-layer structures are substantially parallel to each other, and respectively extend along the first direction; and
the first direction and the second direction are different from each other, and intersecting each other at an angle greater than zero.

### Claim 15 (depends on 14)

The touch control structure of claim 14, wherein multiple fourth single-layer structures respectively of the multiple touch signal lines of the plurality of touch signal lines are clustered in an eighth region;
the multiple fourth single-layer structures are respectively connected to the multiple third double-layer structures;
the multiple fourth single-layer structures are substantially parallel to each other, and respectively extend along the second direction; and
the multiple fourth single-layer structures are at least a sub-set of multiple first single-layer structures.

### Claim 16 (depends on 1)

The touch control structure of claim 1, wherein the respective one of the plurality of touch signal lines has a line width in a range of 2.5 μm to 4.5 μm;
orthographic projections of adjacent single-layer structures on a base substrate are spaced apart by a shortest distance in a range of 1.1 μm to 3.1 μm;
orthographic projections of adjacent single-layer structures in the first layer on the base substrate are spaced apart by a shortest distance in a range of 4.7μm to 10.7 μm; and
orthographic projections of adjacent single-layer structures in the second layer on the base substrate are spaced apart by a shortest distance in a range of 4.7 μm to 10.7 μm.

### Claim 17 (depends on 1)

A display apparatus, comprising:
a display panel;
the touch control structure of claim 1; and
an integrated circuit.

### Claim 18

A touch control structure, comprising a plurality of touch electrodes in a touch control area and a plurality of touch signal lines in a peripheral area;
wherein a respective one of the plurality of touch signal lines comprises a double-layer structure in a double-layer region and a single-layer structure in a single-layer region;
the peripheral area comprises a first sub-area on a first side of the touch control area, a second sub-area on a second side of the touch control area, a third sub-area on a third side of the touch control area, a fourth sub-area on a fourth side of the touch control area;
the first sub-area comprises a side region, and one or more corner regions respectively at one or more corners of the touch control structure;
wherein the double-layer region and the single-layer region are in the first sub- area, the first sub-area has a first shortest width along a direction from the touch control area to the first sub-area, the first shortest width is greater than a shortest width of at least one of sub-areas of the peripheral area other than the first sub-area;
a plurality of adjacent double-layer structures in the double-layer region are respectively connected to a plurality of adjacent single-layer structures in the single-layer region;
the double-layer region is at least partially in the one or more corner regions; and
at least two adjacent single-layer structures respectively in the first layer and the second layer are electrically connected to adjacent rows of touch electrodes.

### Claim 19

A touch control structure, comprising a plurality of touch electrodes in a touch control area and a plurality of touch signal lines in a peripheral area;
wherein a respective one of the plurality of touch signal lines comprises a double-layer structure in a double-layer region and a single-layer structure in a single-layer region;
the peripheral area comprises a first sub-area on a first side of the touch control area, a second sub-area on a second side of the touch control area, a third sub-area on a third side of the touch control area, a fourth sub-area on a fourth side of the touch control area;
the first sub-area comprises a side region, and one or more corner regions respectively at one or more corners of the touch control structure;
wherein the double-layer region and the single-layer region are in the first sub-area, the first sub-area has a first shortest width along a direction from the touch control area to the first sub-area, the first shortest width is greater than a shortest width of at least one of sub-areas of the peripheral area other than the first sub-area;
a plurality of adjacent double-layer structures in the double-layer region are respectively connected to a plurality of adjacent single-layer structures in the single-layer region; and
the double-layer region is at least partially in the one or more corner regions;
wherein multiple first single-layer structures respectively of multiple touch signal lines of the plurality of touch signal lines are clustered in a second region;
multiple second single-layer structures respectively of the multiple touch signal lines of the plurality of touch signal lines are clustered in a third region;
the multiple second single-layer structures are respectively connected to the multiple first single-layer structures;
the multiple first single-layer structures are substantially parallel to each other, and respectively extend along a second direction;
the multiple second single-layer structures are substantially parallel to each other, and respectively extend along a third direction;
at least two of the multiple second single-layer structures are respectively in the first layer and the second layer; and
the second direction and the third direction are different from each other, and intersecting each other at an angle greater than zero.