Touch Sensor Module Colored Resin Gap Filler
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Solution Overview
Problem
Existing display devices face challenges in maintaining image quality due to optical disturbances caused by the adjacency of touch sensors and optical members, leading to compatibility issues and degradation of image quality.
Innovation Solution
A touch sensor module is designed with an optical layer covering the sensing electrodes, a circuit connection structure spaced apart from the optical layer, and a colored resin pattern filling the gap between the optical and circuit connection structures to prevent light leakage and enhance electrical reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical layer and circuit connection structure are placed adjacent to each other, then the device structure is compact, but optical disturbances occur causing degraded image quality
Solution Approach 1:
A colored resin pattern is introduced as an intermediary element between the optical layer and circuit connection structure. This resin pattern fills the gap and prevents direct optical interaction that would cause disturbances, while maintaining the compact overall device structure. The resin acts as a mediator that eliminates harmful optical effects without requiring increased spacing.
2Object-affected harmful factors
If a gap is maintained between the optical layer and circuit connection structure, then optical quality is improved, but the device structure becomes less compact and alignment precision is reduced
Solution Approach 1:
The colored resin pattern serves as a precision alignment intermediary that fills the gap between optical and circuit components. It provides a defined interface that maintains precise alignment while preventing optical disturbances, thus achieving both optical quality and manufacturing precision simultaneously.
Solution Approach 2:
The colored resin pattern utilizes optical absorption properties to prevent light leakage and reflectance. By introducing a material with specific optical characteristics (color), the design eliminates optical disturbances while maintaining structural precision and compactness.
3Reliability
If the circuit connection structure is placed close to the optical layer, then electrical connection efficiency is improved, but light leakage and reflectance occur degrading image quality
Solution Approach 1:
The colored resin pattern acts as an optical intermediary that prevents light leakage between the circuit connection structure and optical layer. It allows these components to remain closely positioned for electrical efficiency while blocking harmful optical interactions through its light-absorbing properties.
Solution Approach 2:
The resin pattern's coloration provides optical absorption that prevents light leakage and reflectance. This enables close placement of electrical components for efficient connection while eliminating the harmful optical effects that would otherwise occur.
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
The solution improves optical, electrical, and mechanical properties by preventing light leakage and reflectance, ensuring better image quality and reliability of the touch sensor module.
Implementation Method 1
a colored resin pattern filling a gap between the optical layer and the circuit connection structure to prevent light leakage and reflectance
Data Source
AI summary
A touch sensor module includes a touch sensor layer including sensing electrodes and traces extending from the sensing electrodes, an optical layer on the touch sensor layer to cover the sensing electrodes, a circuit connection structure spaced apart from the optical layer and electrically connected to the traces on an end portion of the touch senor layer, and a colored resin pattern filling a gap between the optical layer and the circuit connection structure. An optical disturbance at the gap is prevented by the colored resin pattern.