Touch Display Panel Organic Dam Filling for Wire Breakage
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Solution Overview
Problem
Flexible touch display panels face issues with touch electrode wires breaking due to crossing the border area of the display panel, leading to malfunction and reduced reliability, especially when bent.
Innovation Solution
Incorporating an organic material to fill the region between the first and second dams in the non-display area of the touch display panel, which reduces the height difference and alleviates stress accumulation, ensuring the touch electrode lead can cross without breaking and maintaining the touch function even when the panel is bent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If touch electrodes are integrated in the display panel, then the flexible display product becomes thinner, but the wires of the touch electrodes may cross the border area and break due to multiple climbing
Solution Approach 1:
The patent introduces an organic material layer as an intermediary between the touch electrode wires and the dam structure. This organic material fills the region between the display area and the first dam, providing a smooth transition path that eliminates the need for wires to climb over the dam, thereby preventing wire breakage while maintaining the integrated thin design
2Adaptability or versatility
If the touch electrode lead crosses the border area of the display panel, then the touch function can be implemented, but the lead may break due to stress accumulation when the panel is bent
Solution Approach 1:
The patent applies beforehand cushioning by filling the region between the display area and the first dam with organic material before the touch electrode lead is formed. This creates a cushioned transition zone that absorbs stress during bending, preventing the lead from breaking while allowing the touch function to be implemented
3Adaptability or versatility
If the display panel is made flexible to allow bending, then the panel becomes more adaptable, but the touch electrode lead experiences stress accumulation and may break
Solution Approach 1:
The patent uses an organic material layer as a flexible film that fills the transition region between the display area and the first dam. This flexible film accommodates the bending deformation of the display panel, providing a compliant path for the touch electrode lead that prevents stress accumulation and breakage while maintaining panel flexibility
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The organic material enhances the reliability of the touch electrode lead by reducing breakage and stress accumulation, ensuring stable touch functionality and improved encapsulation, making the panel more suitable for flexible applications.
Implementation Method 1
the organic materials have good elasticity and can alleviate and protect the stress accumulation of the touch electrode lead when the display panel is bent
Data Source
AI summary
A touch display panel is provided. The touch display panel includes: a substrate; a thin-film transistor array, an organic light-emitting unit and a thin-film encapsulation layer which are successively laminated on the substrate; and a touch electrode arranged at a side, which is facing away from the organic light-emitting unit, of the thin-film encapsulation layer. The touch display panel includes a display area and a non-display area surrounding the display area. The non-display area has a first dam surrounding the display area and a second dam surrounding the first dam; the non-display area includes a bonding area and border areas disposed at two sides of the bonding area; and at least in the bonding area, organic material fills a region between the first dam and the second dam and fills a region at a side close to the display area of the first dam.