Input Sensing Panel Diagonal Line Segmentation for Moisture Protection
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Solution Overview
Problem
Display apparatuses face reliability issues due to moisture and oxygen ingress, which can affect the performance and longevity of input sensing panels.
Innovation Solution
The integration of an input sensing panel with a base layer, sensing electrodes, and sensing lines, where the sensing lines have a diagonal portion with a disconnected upper layer to expose a lower layer, facilitating protection against moisture and oxygen exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper layer of sensing lines is continuous, then electrical connectivity is maintained, but moisture and oxygen can reach and corrode the conductive layers
Solution Approach 1:
The upper layer of the sensing line is divided into multiple disconnected segments rather than being continuous. This segmentation creates a structure where moisture and oxygen cannot continuously penetrate through the entire line, while the lower layer remains continuously connected to maintain electrical functionality. The segmentation principle resolves the contradiction by protecting against corrosion without sacrificing electrical connectivity.
Solution Approach 2:
Different parts of the sensing line structure have different properties: the upper layer is disconnected in specific regions to block moisture pathways, while the lower layer maintains continuous connectivity for electrical conduction. This local differentiation of structure and function allows the system to simultaneously achieve corrosion resistance and electrical functionality.
2Reliability
If a protective structure is added to block moisture, then reliability improves, but device complexity increases
Solution Approach 1:
The moisture protection function is merged into the existing sensing line structure itself, rather than adding a separate protective component. The disconnected upper layer of the sensing line serves dual purposes: maintaining electrical connectivity through the lower layer while simultaneously blocking moisture pathways. This merging approach provides protection without significantly increasing device complexity.
Data Source
AI summary
An input sensing panel includes a base layer, a plurality of sensing electrodes arranged in a first direction and a second direction which cross each other in an insulating manner, and a plurality of sensing lines connected to a plurality of respective sensing electrodes, at least one of the plurality of sensing lines including a diagonal portion extending in a direction diagonal to each of the first direction and the second direction. Here, each of the plurality of sensing lines includes a lower layer disposed on the base layer and containing a first conductive material and an upper layer containing a second conductive material different from the first conductive material and contacting the lower layer, and the upper layer disposed in the diagonal portion is disconnected in the diagonal direction to expose a portion of the lower layer.