Display Substrate Touch Compensation Electrode Overlap
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Solution Overview
Problem
Existing display substrates face challenges in achieving high sensitivity and accuracy for touch control functions due to the design of the touch control electrode structure.
Innovation Solution
The display substrate incorporates a touch control layer with a touch control electrode and a compensation electrode, where the compensation electrode is electrically connected to the touch control electrode and partially surrounds an opening in the substrate, allowing the first signal line to overlap with the compensation electrode, thereby optimizing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the touch control electrode structure is designed to surround the opening, then the touch control accuracy is improved, but the space occupied by the electrode structure increases
Solution Approach 1:
The patent applies dimensional change by allowing the first signal line to overlap with the touch control compensation electrode in the vertical direction (perpendicular to the base substrate surface). This enables the signal line to pass through the same planar space as the compensation electrode by utilizing the third dimension, thereby reducing the horizontal space required while maintaining both the signal transmission path and the touch control accuracy around the opening.
Solution Approach 2:
The patent implements nesting by positioning the first signal line within the vertical projection area of the touch control compensation electrode. The signal line is embedded in the driving circuit layer while the compensation electrode is in the touch control layer, creating a nested configuration where one structure occupies the planar space of another through vertical layering, thus optimizing space utilization.
2Reliability
If the signal line is positioned to surround the opening, then the signal transmission is improved, but the device complexity increases
Solution Approach 1:
The patent merges the spatial requirements of the signal line and the compensation electrode by allowing them to occupy the same planar region through vertical stacking. The first signal line in the driving circuit layer and the compensation electrode in the touch control layer are combined in the vertical dimension, reducing the overall structural complexity while ensuring both signal transmission integrity and touch control functionality.
Solution Approach 2:
The patent resolves the complexity issue by transitioning from a planar arrangement to a three-dimensional configuration. Instead of routing the signal line and compensation electrode separately in the horizontal plane, the design allows the signal line to extend vertically and overlap with the compensation electrode, simplifying the overall layout while maintaining functional requirements.
Data Source
AI summary
A display substrate and a display device are provided. The display substrate includes a display region and an opening located in the display region, the opening penetrates through the display substrate, and the display substrate includes a base substrate, a driving circuit layer, a light-emitting component layer, an encapsulation layer, and a touch control layer. The driving circuit layer includes a first signal line at least partially surrounding the opening; the light-emitting component layer is provided on a side of the driving circuit layer away from the base substrate; the encapsulation layer is provided on a side of the light-emitting component layer away from the base substrate; the touch control layer includes a touch control electrode and a touch control compensation electrode at least partially surrounding the opening; the first signal line at least partially overlaps with the touch control compensation electrode.