Touch Sensing Module with Exposed Electrode Ends
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional touch sensing modules face challenges in accurately measuring electrical properties due to the protective layer blocking measurements, requiring complex computations and increasing inspection time and cost as the number of modules fabricated increases.
Innovation Solution
A touch sensing module design with sensing electrodes having exposed ends through openings in a covering layer, allowing direct electrical connection and measurement, reducing parasitic effects from external circuits and enhancing measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protecting layer is installed on the touch sensing layer to protect it from direct contact, then the touch sensing layer is protected, but measurements to acquire electrical properties are blocked
Solution Approach 1:
The patent segments the covering layer into regions with openings, creating distinct measurement regions where the covering layer is removed to expose the touch sensing layer. This allows measurements to be performed directly on the sensing layer without interference from the covering layer, while other regions maintain protective coverage.
Solution Approach 2:
The patent extracts or removes the covering layer in specific regions to create openings that expose the touch sensing layer. This extraction enables direct electrical contact and measurement of the sensing layer's electrical properties without the blocking effect of the covering layer.
2Reliability
If measurements are conducted through external circuits after the protecting layer is assembled, then the touch sensing layer is protected, but computing time and inspection cost increase
Solution Approach 1:
The patent segments the covering layer to create measurement openings, enabling direct measurement of electrical properties at the sensing layer level. This eliminates the need for complex external circuit measurements and reduces computing time for quality control, while maintaining protection in other regions.
3Reliability
If the covering layer completely covers the sensing electrodes, then protection is maximized, but direct electrical connection for measurement is prevented
Solution Approach 1:
The patent segments the covering layer into covered regions and opening regions, allowing the sensing electrodes to be partially covered for protection and partially exposed for direct electrical connection and measurement purposes.
Solution Approach 2:
The patent applies different properties to different parts of the covering layer: in measurement regions, the covering layer has openings to enable direct electrical connection, while in other regions, it provides complete coverage for protection. This local differentiation resolves the contradiction between protection and measurability.
Data Source
AI summary
A touch sensing module includes a substrate, sensing electrodes, and a covering layer. The sensing electrodes are disposed on a surface of the substrate. Each of the sensing electrodes has a first end and a second end opposite to the first end. The second end is adopted to be electrically connected with an external circuit. The covering layer is disposed on a side of the sensing electrodes distal from the substrate, and covers the sensing electrodes. The covering layer has openings. The first ends of the sensing electrodes are exposed within the openings respectively.