Display Hole Touch Sensor Layout to Reduce Signal Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices with holes for accommodating features like cameras experience signal interference and dead spaces, leading to reduced touch performance and sensitivity in areas near the hole.
Innovation Solution
The display device incorporates a light-emitting substrate with recesses and a touch sensing unit that includes sensor members and connectors, reducing signal interference and dead spaces by optimizing the layout of signal lines and touch electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hole is created in the display area to accommodate camera features, then camera functionality is enabled, but signal interference occurs between signal lines and connecting wires, degrading touch performance
Solution Approach 1:
The display area is divided into distinct zones: a first non-display area surrounding the hole where signal lines are routed, and a second non-display area where connecting wires are routed. This spatial segmentation prevents signal interference while maintaining camera functionality through the hole.
Solution Approach 2:
The patent utilizes the vertical dimension by routing signal lines and connecting wires in different layers or planes around the hole. This dimensional separation allows both types of conductors to coexist without electromagnetic interference, preserving touch performance while enabling camera features.
2Adaptability or versatility
If the display area is reduced to accommodate a hole for camera features, then camera functionality is enabled, but dead spaces increase, reducing touch sensitivity
Solution Approach 1:
The patent applies different functional qualities to different regions: the first non-display area is optimized for signal line routing with appropriate shielding, while the second non-display area is optimized for connecting wire routing. This local optimization minimizes dead spaces and maintains touch sensitivity in the remaining display area.
3Device complexity
If signal lines and connecting wires are routed close to the hole, then device complexity is reduced, but signal interference increases, degrading touch recognition
Solution Approach 1:
The routing paths are segmented into distinct zones: signal lines are confined to the first non-display area while connecting wires are confined to the second non-display area. This segmentation simplifies the overall routing complexity by providing clear path definitions while preventing signal interference through spatial separation.
Data Source
AI summary
A display device includes: a light-emitting substrate including a base substrate having a non-display area and a display area that surrounds the non-display area; an input sensing unit disposed on the light-emitting substrate; and a hole penetrating front and rear surfaces of each of the light-emitting substrate and the input sensing unit, wherein the light-emitting substrate includes a plurality of recesses, the non-display area includes a hole area which overlaps with the hole, a recess area in which the plurality of recesses are disposed and surrounds the hole area, and a peripheral area which surrounds the recess area, and the input sensing unit includes a plurality of first sensor members overlapping the display area and a first connector connecting the first sensor members and overlapping the groove area.