Display Panel Touch Line Layering for Non-Display Region Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Touch display panels have a large non-display region due to numerous touch lines, which increases the area of the non-display region and affects the overall efficiency and aesthetics of the display.
Innovation Solution
The display panel design includes touch electrodes and lines arranged in a specific layered structure, with touch lines and power supply voltage lines strategically positioned to reduce the area of the non-display region by overlapping and layering them in a way that minimizes space usage while maintaining effective signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of touch lines are provided in the non-display region, then the touch signal transmission is ensured, but the area of the non-display region increases
Solution Approach 1:
The patent applies dimensionality change by transitioning touch lines from planar arrangement to three-dimensional overlapping arrangement across multiple layers. Specifically, touch lines are arranged in different layers (first touch line in touch layer, second and third touch lines in display layer) and overlap with each other in the vertical direction, thereby utilizing the third dimension (vertical stacking) to reduce the horizontal area occupied by touch lines in the non-display region while maintaining electrical connectivity for touch signal transmission
Solution Approach 2:
The patent implements nesting by placing touch lines within the same structural framework as display signal lines. The third touch line overlaps with the first power supply voltage line in the vertical direction, and both are integrated into the multi-layer conductive structure. This nested arrangement allows touch lines to share space with power supply lines, reducing the overall non-display region area while ensuring both touch and power signal transmission functions are maintained
2Area of stationary object
If touch lines and power supply voltage lines are arranged separately without overlapping, then signal interference is reduced, but the non-display region area increases
Solution Approach 1:
The patent resolves the conflict between area reduction and signal interference by utilizing vertical layering. Touch lines and power supply voltage lines are arranged in different layers (touch layer and display layer) and overlap only in the vertical direction. This three-dimensional separation maintains electrical isolation between touch signals and power signals while minimizing the horizontal footprint of the non-display region
Solution Approach 2:
The patent introduces insulating layers as intermediaries between the third touch line and the first power supply voltage line in overlapping regions. These insulating layers act as mediators that prevent direct electrical contact and signal interference between the touch lines and power supply lines, while still allowing the lines to occupy the same horizontal space through vertical stacking
Data Source
AI summary
A display panel and a display device are provided. The line arranging region includes a first line arranging region, a second line arranging region, and a third line arranging region. The touch lines include a first touch line located in the first line arranging region, a second touch line located in the second line arranging region, and a third touch line located in the third line arranging region. The first touch line is located in a touch layer, and the second touch line and the third touch line are located in a display layer. The power supply voltage lines include a first power supply voltage line. The third touch line is disposed in a layer different from the first power supply voltage line. The third touch line at least partially overlaps with the first power supply voltage line along a direction perpendicular to a plane of the display panel.