Touch Signal Routing in Display Panels to Reduce Frame Width
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Solution Overview
Problem
The existing wiring layout of touch display panels results in an excessively large frame width due to the placement of touch signal lines, which negatively impacts user experience.
Innovation Solution
The display panel design includes touch electrodes and touch signal lines where at least one of the touch traces is located within the display region, reducing the space occupied in the non-display region and thereby minimizing the frame width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch signal lines are placed in the non-display region, then the touch function can be implemented, but the frame width becomes excessively large
Solution Approach 1:
The patent moves touch signal lines from the non-display region (traditional 2D plane) into the display region, utilizing the display area as an additional spatial dimension for signal routing. This dimensional transition allows signal lines to traverse through the display region where space is more efficiently utilized, thereby reducing the frame width while maintaining touch functionality.
Solution Approach 2:
Instead of placing touch signal lines in the conventional location (non-display region), the patent inverts the wiring layout by positioning at least one touch trace within the display region. This inverted approach reverses the traditional design paradigm and achieves compact frame width without compromising touch operation.
2Device complexity
If touch signal lines are routed through the non-display region, then wiring is simplified, but the display area is reduced
Solution Approach 1:
The patent utilizes the display region as an alternative spatial dimension for signal routing, moving traces from the non-display region into the display region. This dimensional shift allows signal lines to be routed through areas that would otherwise be occupied by display elements, effectively utilizing unused spatial resources without reducing the functional display area.
Solution Approach 2:
The patent applies different wiring strategies to different regions: touch signal lines are selectively routed through specific areas of the display region where they can coexist with display elements without compromising display quality. This localized wiring approach maintains overall display area while accommodating signal routing needs.
Data Source
AI summary
The present application provides a display panel and a display device. The display panel include a display region and a non-display region arranged adjacently. The display panel including: a substrate; a touch layer located in the display region and arranged on a side of the substrate, wherein the touch layer includes one or more first touch electrodes extending along a first direction and arranged along a second direction and one or more second touch electrodes extending along the second direction and arranged along the first direction; a touch signal line including a first touch trace and a second touch trace, wherein the first touch trace is electrically connected to the first touch electrodes, and the second touch trace is electrically connected to the second touch electrodes; wherein at least one of the first touch trace and the second touch trace is located in the display region.