Display Input Sensor Mesh Layout for Low-Visibility Boundaries
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Solution Overview
Problem
Existing electronic devices with input sensors face challenges in preventing the sensor pattern from being viewed without increasing the sensor's resistance, which affects the viewing angle difference and visibility.
Innovation Solution
The electronic device incorporates a display panel with light emitting elements and an input sensor featuring mesh patterns and conductive patterns with cut-away portions that connect to mesh lines, reducing visibility without increasing resistance by ensuring the conductive patterns' integrity and light reflectance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the input sensor uses solid conductive patterns, then the sensor resistance is high, but the sensor pattern becomes visible and viewing angle difference increases
Solution Approach 1:
The conductive patterns are segmented into mesh patterns with multiple openings, dividing the continuous conductive material into a grid structure. This segmentation reduces the effective surface area that reflects light, making the pattern less visible while maintaining electrical conductivity through the interconnected mesh structure
Solution Approach 2:
The conductive patterns incorporate a porous structure with multiple openings formed therein. This porous design allows light to pass through more effectively rather than reflecting off a solid surface, reducing pattern visibility while the conductive material maintains its electrical function through the porous framework
2Object-affected harmful factors
If the mesh patterns have larger openings, then the pattern visibility is reduced, but the resistance of the input sensor increases
Solution Approach 1:
The mesh patterns feature asymmetric conductive patterns with cut-away portions that open toward specific openings. This asymmetric design strategically positions conductive material to maintain conductivity pathways while minimizing light reflection in critical viewing areas, balancing visibility reduction with resistance control
Solution Approach 2:
Different regions of the mesh pattern have different conductive material distributions. The cut-away portions are strategically located to create local variations in conductivity and light reflection, optimizing both visibility reduction and resistance maintenance in different areas of the sensor
Data Source
AI summary
An electronic device includes a display panel that includes a plurality of light emitting elements, and an input sensor disposed on the display panel and that includes a plurality of mesh patterns. The mesh patterns include a plurality of openings formed therein and spaced apart from each other in a first direction and a second direction that crosses the first direction. The mesh patterns include a plurality of conductive patterns spaced apart from each other in a direction that cross the first and second directions, where a center opening of the plurality of openings is disposed therebetween, and a plurality of mesh lines disposed along an edge of the center opening and connected to the conductive patterns. Each of the conductive patterns includes at least one cut-away portion opened toward one of the openings.