Touch Display Signal Line Support via Panel Extension
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Solution Overview
Problem
Touch display devices face a low yield rate due to the vulnerability of touch signal lines extending beyond the display panel, which are prone to damage without support.
Innovation Solution
The touch display device design includes a display panel with a first region and a second region extending beyond the edges, where the touch panel and flexible printed circuit board are arranged such that the orthographic projection of the first terminal falls within the second region, providing support and reducing the likelihood of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the touch signal line extends beyond the display panel to connect the touch panel and driving circuit, then the touch function can be realized, but the touch signal line is vulnerable to damage and the yield rate decreases
Solution Approach 1:
The patent extends the display panel in the thickness direction (Z-axis) to create a protruding structure. This dimensional change allows the touch signal line to be routed through the extended region rather than hanging externally, providing structural support while maintaining electrical connectivity. The touch signal line is embedded in the extended display panel region, transforming it from a vulnerable external connection to a protected internal pathway.
Solution Approach 2:
The display panel is pre-formed with an extended region before final assembly. This preliminary structural preparation creates a built-in support structure that naturally protects the touch signal line during subsequent assembly and operation. The extended region is designed in advance to accommodate and protect the signal line connection path.
2Stability of the object's composition
If the touch signal line is supported by extending the display panel, then the structural integrity is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the support function with the display panel structure itself. The extended region of the display panel simultaneously serves as both the structural support for the touch signal line and part of the display device housing. This integration eliminates the need for separate support components, reducing overall device complexity while maintaining structural integrity.
Solution Approach 2:
The extended region of the display panel performs multiple functions: it provides structural support for the touch signal line, serves as a mounting structure for the driving circuit, and maintains the overall structural rigidity of the device. This multi-functionality reduces the need for additional components and simplifies the overall device architecture.
Data Source
AI summary
The present disclosure relates to a touch display device and a manufacturing method thereof, and a terminal, which belongs to the technical field of display. The touch display device includes a display panel, a touch panel disposed on a display side of the display panel, a touch driving circuit, and a touch flexible printed circuit board, wherein the display panel includes a first region, and a second region extending outside the first region on at least one edge of the first region; the touch flexible printed circuit board electrically connects the touch panel with the touch driving circuit disposed on a non-display side of the display panel, and an orthographic projection of the first terminal of the flexible printed circuit board connected to the touch panel on the display panel is disposed in the second region.