Touch Display Wiring Redundancy for Opened-Line Defect Prevention

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Solution Overview

Problem

Touch display apparatuses face defects in signal wirings, such as opened-line defects, which can lead to malfunctions, especially when the high degree of integration of connection wirings increases the likelihood of these defects.

Innovation Solution

The implementation of a touch display apparatus with a base substrate, sensing electrodes, first and second connection wirings, and corresponding touch detectors, where the second connection wiring and touch detector operate only when there is a defect in the first connection wiring or touch detector, and sensing electrodes are arranged in a matrix form with alternating connections to reduce wiring integration and prevent defects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If signal wirings are arranged with a high degree of integration, then the touch display apparatus can achieve higher functionality and compactness, but defects (e.g., opened-line defects) may occur in the signal wirings

Engineering Contradiction:

Improveintegration degree of connection wiringsVSAvoiddefect rate of signal wirings

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The connection wirings are divided into first connection wirings and second connection wirings that are spatially separated and extend in different directions. This segmentation reduces the integration density in any single region, thereby lowering the probability of defects while maintaining overall functionality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a redundant wiring structure where both first and second connection wirings are provided as backup paths. If a defect occurs in one wiring path, the other path can compensate, providing beforehand cushioning against potential failures.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Adaptability or versatility

If connection wirings are arranged with high integration, then device functionality is enhanced, but the likelihood of opened-line defects increases

Engineering Contradiction:

Improvedevice functionalityVSAvoidopened-line defects

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The connection wirings are segmented into first connection wirings extending in a first direction and second connection wirings extending in a second direction. This segmentation allows the device to maintain high functionality through multiple connection paths while reducing the harmful effect of defects by distributing wiring density.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the touch display apparatus have different wiring arrangements. The first connection wirings and second connection wirings are positioned at different locations and extend in different directions, creating local quality variations that optimize both functionality and defect prevention in different areas.

Inventive Principle:

Principle #3Local quality

3Device complexity

If a single connection wiring is used, then device complexity is reduced, but reliability decreases due to lack of redundancy

Engineering Contradiction:

Improvenumber of connection wiringsVSAvoidmalfunction prevention

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent provides both first connection wirings and second connection wirings as redundant paths before any defect can occur. This beforehand cushioning ensures that if one wiring path fails, the other path is already in place to maintain device operation, thereby preventing malfunctions.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent changes the parameter of wiring configuration from a single path to multiple paths with different spatial arrangements and extension directions. This parameter change increases reliability through redundancy while managing device complexity through systematic design.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration enhances the reliability and performance of the touch display apparatus by preventing malfunctions and reducing power consumption, while the alternating connection arrangement minimizes defects in the connection wirings, thereby improving overall performance.

Implementation Method 1

capacitive touch screen panels are configured to convert information regarding a position(s) of a touch interaction into an electrical signal by sensing a change in capacitance formed between a conductive sensing pattern and an adjacent sensing pattern, ground electrode, or the like

Methodology Applied

Scientific EffectCapacitance: Capacitance

Data Source

PatentUS10921925B2Touch display apparatus and method of manufacturing the same

Publication Date: 2021.02.16 SAMSUNG DISPLAY CO LTD

AI summary

A touch display apparatus including a base substrate, a sensing electrode, a first connection wiring, a second connection wiring, a first touch detector and a second touch detector. The sensing electrode is disposed on the base substrate. The first connection wiring is electrically connected to the sensing electrode. The second connection wiring is electrically connected to the sensing electrode. The first touch detector is electrically connected to the first connection wiring and configured to detect a touch event for the sensing electrode. The second touch detector is electrically connected to the second connection wiring and configured to detect the touch event.