Electronic Panel Crack Sensing Layout With Floating Connection
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Solution Overview
Problem
Existing electronic apparatuses face challenges in achieving reliable sensing and display functions, particularly in maintaining uniform sensitivity across active areas and preventing damage from cracks in through-holes.
Innovation Solution
The electronic apparatus incorporates a base substrate with specific areas for sensing electrodes, sensing lines, crack sensing patterns, and a connection line with a floating portion, which connects the crack sensing pattern to the crack sensing line via the active area, ensuring electrical insulation from sensing electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing electrodes are disposed in active areas to provide uniform sensitivity, then sensing performance is improved, but the risk of crack damage increases
Solution Approach 1:
The patent divides the sensing system into separate functional components: sensing electrodes disposed in active areas for touch detection, and crack sensing patterns disposed in non-active areas for damage detection. This segmentation allows each component to perform its specific function without compromising the other, resolving the contradiction between sensing performance and crack resistance.
Solution Approach 2:
The patent introduces crack sensing patterns as intermediary elements that are electrically connected to the sensing electrodes through connection lines with floating portions. These intermediary patterns enable crack detection without requiring the sensing electrodes themselves to be in positions vulnerable to cracks, thus maintaining both sensing performance and reliability.
2Measurement precision
If crack sensing patterns are disposed close to sensing electrodes for effective crack detection, then crack detection capability is improved, but electrical interference increases
Solution Approach 1:
The patent resolves the spatial conflict by transitioning to a multi-layer structure. Crack sensing patterns and sensing electrodes are disposed in different layers, allowing them to be spatially close for effective crack detection while being electrically isolated through the layer separation. The floating portion in the connection line further ensures electrical insulation, eliminating interference while maintaining detection capability.
3Device complexity
If connection lines directly connect crack sensing patterns to sensing electrodes, then electrical connection is simplified, but floating portion insulation is compromised
Solution Approach 1:
The patent introduces a floating portion as an intermediary element in the connection line between crack sensing patterns and sensing electrodes. This floating portion acts as an electrical insulator while maintaining the physical connection, ensuring that crack sensing patterns remain electrically isolated from sensing electrodes. This resolves the contradiction by providing both connection and insulation through the intermediary floating structure.
Data Source
AI summary
An electronic panel includes a base substrate having a first area, a second area adjacent to the first area, and a third area adjacent to the second area, a plurality of sensing electrodes in the second area, a plurality of sensing lines in the third area and electrically connected to the plurality of sensing electrodes, a crack sensing pattern in the first area and spaced apart from the plurality of sensing electrodes, a crack sensing line in the third area and spaced apart from the plurality of sensing lines, and a connection line connecting the crack sensing pattern to the crack sensing line via the second area and including a floating portion, wherein the floating portion is at the same layer as the crack sensing pattern and is spaced apart from the plurality of sensing electrodes.