Anti-interference Touch Sensing Structure with Floating Intermediary
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Solution Overview
Problem
Conventional touch sensing structures face issues with short circuits due to particle pollution and scratches, leading to decreased product yield and malfunction, as the adjacent touch sensing units are easily short-circuited with intervals of 10 μm to 30 μm.
Innovation Solution
An anti-interference touch sensing structure is introduced, featuring a first substrate with touch sensing units and a first anti-interference spot disposed within the interval region between them, increasing the interval to 70 μm to 130 μm, which is electrically floating and made of conducting materials, preventing short circuits and enhancing product yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the interval between adjacent touch sensing units is reduced to 10 μm to 30 μm, then the touch sensing density is improved, but the risk of short circuit due to particle pollution and scratches increases
Solution Approach 1:
An anti-interference spot is introduced as an intermediary element between adjacent touch sensing units. This spot acts as a protective barrier that prevents particle pollution and scratches from causing short circuits between the densely spaced touch sensing units, thereby enabling high density without compromising reliability
Solution Approach 2:
The anti-interference spot is pre-formed between touch sensing units before the final assembly. This preliminary protective structure is established in advance to prevent short circuits during subsequent manufacturing processes and usage, addressing the reliability issue before it can occur
2Reliability
If the interval between adjacent touch sensing units is increased to 70 μm to 130 μm, then the short circuit risk is reduced, but the touch sensing density decreases
Solution Approach 1:
The anti-interference spot serves as a space-efficient intermediary that allows touch sensing units to be positioned closer together (maintaining density) while still providing sufficient separation to prevent short circuits. The spot acts as a protective barrier that enables reliable operation without requiring large intervals between functional elements
3Reliability
If anti-interference spots are added between touch sensing units, then the short circuit prevention is improved, but the device complexity increases
Solution Approach 1:
The anti-interference spots are strategically positioned only in specific locations between touch sensing units where short circuit risk is highest, rather than uniformly distributing complexity throughout the entire device. This localized approach provides effective protection with minimal added complexity
Solution Approach 2:
The anti-interference spots are formed using simple, readily available materials and straightforward manufacturing processes. Rather than implementing complex protective mechanisms, the solution uses simple geometric features that can be easily fabricated and maintained, minimizing the increase in device complexity
Data Source
AI summary
An anti-interference touch sensing structure includes a first substrate, a plurality of touch sensing units and at least a first anti-interference spot. The touch sensing units are coplanarly disposed on the first substrate, and a first interval region is formed between the adjacent touch sensing units. The first anti-interference spot is disposed within the first interval region.