Touch Device Wire Corrosion Protection via Synchronization

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Solution Overview

Problem

Touch devices, such as touch panels, suffer from malfunctions due to wire corrosion, especially in high-temperature or high-humidity environments, where excessive voltage differences can cause corrosion over time, leading to reliability issues.

Innovation Solution

The touch device design includes a first wire for receiving a touch driving signal and a second wire adjacent to it for receiving a synchronization signal, which is timed and voltage-waveform matched to the driving signal, reducing voltage differences and improving wire reliability by allowing adjacent wires to compensate for corrosion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wires are used to transmit touch signals, then signal transmission is enabled, but wire corrosion occurs leading to malfunction

Engineering Contradiction:

Improvewire reliabilityVSAvoidwire corrosion

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a shielding wire as an intermediary element positioned between the signal wire and the corrosive environment. This shielding wire acts as a mediator that protects the signal wire from corrosion while allowing the signal transmission to continue uninterrupted. The shielding wire absorbs or blocks harmful environmental factors (moisture, oxygen) from reaching the signal wire.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements a protective structure where a shielding wire is pre-positioned around or adjacent to the signal wire before corrosion can occur. This beforehand protection creates a buffer zone that prevents direct contact between the signal wire and corrosive elements, cushioning the signal wire against future corrosion damage.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Adaptability or versatility

If multiple wires are used for signal transmission, then touch functionality is enabled, but corrosion risk increases

Engineering Contradiction:

Improvetouch functionalityVSAvoidwire reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines multiple wires (signal wire and shielding wire) into a integrated wire assembly structure. By merging these functions into a single coordinated system where the shielding wire protects the signal wire, the overall reliability is improved while maintaining the necessary touch functionality through the signal wire.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10162460B2Touch device

Publication Date: 2018.12.25 AU OPTRONICS CORP

AI summary

A touch device includes a substrate, a touch electrode layer, a first wire, and at least one second wire The substrate includes a touch region and a peripheral region. The peripheral region is surrounding the touch region. The touch electrode layer is disposed at the touch region. The first wire is disposed at the peripheral region and is configured to receive a touch driving signal. The at least one second wire is disposed at the peripheral region and is configured to receive a synchronization signal corresponding to the touch driving signal. The first wire is disposed between the touch region and the at least one second wire.