# US 10,502,998 B2 · Touch sensor, method of manufacturing the same, touch screen, and electronic product

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- Number: US 10,502,998 B2
- Document ID: US10502998B2
- Status: Granted
- Kind: B2
- Application number: 15/544,611
- Filed: 2017-01-10
- Published: 2018-07-26
- Granted: 2019-12-10
- Earliest claimed: 2016-06-07
- Assignees: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd.
- Applicants: BOE Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd.
- Inventors: Jiawei Xu; Lei Zhang; Tsung-Chieh Kuo; Ming Hu
- Web page: https://patentgrep.com/patent/US10502998B2

## 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 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/047: using sets of wires, e.g. crossed wires
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- 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: 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

Embodiments of the present invention disclose a touch sensor, a method of manufacturing the touch sensor, and a touch screen and an electronic product which include the touch sensor. The touch sensor includes: a substrate; a blocking pattern formed on the substrate; and a metal bridge. The blocking pattern is formed in a region corresponding to the metal bridge on the substrate and is configured to block the metal bridge.

## Claims

### Claim 1

A touch sensor comprising:
a substrate;
a blocking pattern disposed on the substrate; and
a metal bridge,
wherein the blocking pattern is disposed in a region corresponding to the metal bridge on the substrate and is configured to block the metal bridge, and
an orthogonal projection of the metal bridge on the substrate is a first orthogonal projection, an orthogonal projection of the blocking pattern on the substrate is a second orthogonal projection, and the first orthogonal projection is located within a range of the second orthogonal projection.

### Claim 2 (depends on 1)

The touch sensor of claim 1, wherein:
the blocking pattern is formed of a black photoresist or a black metal oxide material.

### Claim 3 (depends on 1)

The touch sensor of claim 1, the touch sensor further comprising:
a black matrix frame disposed on the substrate, located in the same layer as the blocking pattern, and formed of the same material as the blocking pattern.

### Claim 4 (depends on 1)

The touch sensor of claim 1, wherein:
both a shape and a size of the blocking pattern are the same as a shape and a size of the metal bridge.

### Claim 5 (depends on 1)

The touch sensor of claim 1, further comprising:
a touch identification pattern, wherein the touch identification pattern is disposed on the blocking pattern and on a portion of the substrate which is not covered by the blocking pattern, and comprises a first wiring and a second wiring which cross each other at a crossing; and
a first transparent insulating layer disposed on a portion of the first wiring corresponding to the metal bridge,
wherein the metal bridge is disposed at the crossing of the first wiring and the second wiring on the first transparent insulating layer to connect wiring segments of the second wiring which are separated at the crossing.

### Claim 6 (depends on 5)

The touch sensor of claim 5, further comprising:
a second transparent insulating layer disposed over the touch identification pattern and the metal bridge.

### Claim 7 (depends on 1)

A method of manufacturing the touch sensor of claim 1, the method comprising:
forming the blocking pattern on the substrate; and
forming the metal bridge blocked by the blocking pattern.

### Claim 8 (depends on 7)

The method of claim 7, wherein:
the method further comprises: forming a black matrix frame on the substrate, before the forming the blocking pattern on the substrate, or between the forming the blocking pattern on the substrate and the forming the metal bridge.

### Claim 9 (depends on 8)

The method of claim 8, wherein:
the forming the metal bridge comprises:
forming the metal bridge on the blocking pattern, and
the method further comprises:
forming a first transparent insulating layer on the metal bridge; and
forming a touch identification pattern on the first transparent insulating layer and on a portion of the substrate which is not covered by the first transparent insulating layer, wherein the touch identification pattern comprises a first wiring and a second wiring which cross each other at a crossing, and the metal bridge is disposed at the crossing of the first wiring and the second wiring to connect wiring segments of the first wiring which are separated at the crossing.

### Claim 10 (depends on 9)

The method of claim 9, further comprising the step of:
forming a second transparent insulating layer on the touch identification pattern.

### Claim 11 (depends on 8)

The method of claim 8, further comprising:
forming a touch identification pattern on the blocking pattern and on a portion of the substrate which is not covered by the blocking pattern before the forming the metal bridge, the touch identification pattern comprising a first wiring and a second wiring which cross each other at a crossing; and
forming a first transparent insulating layer on a portion of the first wiring corresponding to the metal bridge,
wherein the forming the metal bridge comprises forming the metal bridge at the crossing of the first wiring and the second wiring on the first transparent insulating layer to connect wiring segments of the second wiring which are separated at the crossing.

### Claim 12 (depends on 7)

The method of claim 7, wherein:
the black matrix frame is formed while the blocking pattern is formed on the substrate, and the black matrix frame is formed of the same material as the blocking pattern.

### Claim 13 (depends on 12)

The method of claim 12, wherein:
the forming the black matrix frame while the blocking pattern is formed on the substrate comprises:
applying a black photoresist material to the substrate to form a black photoresist material layer; and
forming a black photoresist pattern by exposing and developing processes,
wherein the black photoresist pattern comprises a black photoresist-retained region comprising the black matrix frame and the blocking pattern, and a black photoresist-removed region.

### Claim 14 (depends on 1)

A touch screen comprising:
the touch sensor of claim 1, an optical clear resin/optical clear adhesive layer, and a liquid crystal display module which are arranged in sequence.

### Claim 15 (depends on 14)

The touch screen of claim 14, wherein:
the touch screen is a one-glass solution type touch screen, an on-cell type touch screen, or an in-cell type touch screen.

### Claim 16 (depends on 14)

An electronic product comprising:
the touch screen of claim 14.

### Claim 17

A touch sensor comprising:
a substrate;
a blocking pattern disposed on the substrate;
a metal bridge, wherein the blocking pattern is disposed in a region corresponding to the metal bridge on the substrate and is configured to block the metal bridge;
a first transparent insulating layer disposed on the metal bridge; and
a touch identification pattern, wherein the touch identification pattern is disposed on the first transparent insulating layer and on a portion of the substrate which is not covered by the first transparent insulating layer, and comprises a first wiring and a second wiring which cross each other at a crossing, wherein the metal bridge is disposed at the crossing of the first wiring and the second wiring to connect wiring segments of the first wiring which are separated at the crossing.

### Claim 18 (depends on 17)

The touch sensor of claim 17, further comprising:
a second transparent insulating layer disposed over the touch identification pattern.

### Claim 19 (depends on 17)

The touch sensor of claim 17, wherein:
the touch identification pattern is formed of an indium tin oxide material.

### Claim 20 (depends on 17)

A touch screen comprising:
the touch sensor of claim 17, an optical clear resin/optical clear adhesive layer, and a liquid crystal display module which are arranged in sequence.