Touch Detection Electrode Segmentation for Wire Break Reliability

Solution Overview

Problem

Touch detection apparatuses, such as touch panels, face challenges with wire breakage and increased costs due to the need for multilayered wiring substrates and complex electrical coupling, which can compromise reliability and efficiency.

Innovation Solution

A detection apparatus with a first substrate having a detection region and a frame region, featuring first and second electrodes intersecting each other, and first and second wires coupling these electrodes to terminals, allowing for secure coupling even if one wire breaks, thereby reducing the complexity and cost of the wiring substrate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple wires are coupled to detection electrodes and drive electrodes, then coupling reliability is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvecoupling reliabilityVSAvoidwiring substrate complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The detection electrode is divided into multiple segments along its length, with each segment having its own separate wire connection to the wiring substrate. This segmentation allows each wire to be independently connected, improving reliability while keeping the wiring substrate structure manageable by organizing connections in a systematic manner.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Wire connections are distributed across different spatial positions and directions rather than concentrating all connections in one location. The wires extend in different directions from the detection electrodes to the wiring substrate, utilizing two-dimensional space to reduce complexity at any single connection point.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If multiple wires are coupled to detection electrodes and drive electrodes, then coupling reliability is improved, but manufacturing cost increases

Engineering Contradiction:

Improvecoupling reliabilityVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The detection electrode is divided into multiple segments along its length, with each segment having its own separate wire connection to the wiring substrate. This segmentation allows each wire to be independently connected, improving reliability while keeping the wiring substrate structure manageable by organizing connections in a systematic manner.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The wiring substrate is designed with a standardized multi-terminal structure that can accommodate multiple wire connections in a uniform manner. This universal connection architecture allows the same substrate design to be used across different electrode configurations, reducing manufacturing complexity and cost despite the increased number of connections.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If a multilayered wiring substrate is used to couple multiple wires, then coupling capability is improved, but device complexity increases

Engineering Contradiction:

Improvecoupling capabilityVSAvoidwiring substrate structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Wire connections are distributed across different spatial positions and directions rather than concentrating all connections in one location. The wires extend in different directions from the detection electrodes to the wiring substrate, utilizing two-dimensional space to reduce complexity at any single connection point.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The wiring substrate employs a repeated modular terminal structure where identical connection patterns are copied across multiple locations. This modular copying approach enables the substrate to handle multiple wire couplings through standardized units, increasing coupling capability while maintaining structural simplicity through repetition rather than complexity.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS10838561B2Detection apparatus and display apparatus with detection function

Publication Date: 2020.11.17 MAGNOLIA WHITE CORP

AI summary

A detection apparatus comprising: a first substrate; a detection region having a first detection side extending along a first direction parallel with a surface of the first substrate and a second detection side extending along a second direction intersecting the first direction; a frame region provided outside the detection region and having a first frame region extending along the first detection side and a second frame region extending along the second detection side; a first electrode provided at a position overlapping the detection region of the first substrate, the first electrode extending in the second direction; a second electrode provided at a position overlapping the detection region, the second electrode extending in the first direction; a plurality of terminals provided in the first frame region of the first substrate and arrayed in the first direction, and including a first terminal; a first wire; and a second wire.