Display Panel Electrostatic Protective Layer Design
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Solution Overview
Problem
Display panels, particularly touch display panels, face electrostatic interference issues due to static electricity affecting touch leads and encapsulation elements, leading to failures in touch function and sealing performance.
Innovation Solution
A display panel design incorporating a touch layer with first and second touch electrodes connected through leads, an electrostatic protective layer that covers these leads and the encapsulation element, and a simple implementation to ensure normal operation and electrostatic protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch leads are used to connect touch electrodes to touch chip, then touch function is implemented, but electrostatic interference causes touch function failure
Solution Approach 1:
An electrostatic protective layer is introduced as an intermediary component between the touch leads and the external environment. This protective layer acts as a mediator that blocks electrostatic interference from reaching the touch leads, thereby maintaining stable touch function while preserving the original touch lead connection structure.
Solution Approach 2:
The electrostatic protective layer is applied in advance to prevent electrostatic interference before it can affect the touch leads. By establishing this protective barrier beforehand, the design proactively counteracts potential electrostatic damage, ensuring reliable touch function operation.
2Reliability
If encapsulation element is placed at edge of display panel, then sealing is achieved, but electrostatic damage affects sealing performance
Solution Approach 1:
The electrostatic protective layer serves as a protective intermediary that envelops the encapsulation element at the display panel edge. This intermediate layer blocks electrostatic interference from directly contacting the encapsulation element, thereby preserving sealing performance while maintaining the edge placement configuration.
3Reliability
If electrostatic protective layer is added to cover touch leads and encapsulation element, then electrostatic protection is improved, but device structure becomes more complex
Solution Approach 1:
The electrostatic protective layer is designed as a universal protective component that simultaneously protects multiple vulnerable elements (touch leads and encapsulation element) with a single continuous layer. This multi-functional approach provides comprehensive electrostatic protection while avoiding the need for multiple separate protective structures, thereby limiting the increase in device complexity.
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 electrostatic protective layer effectively shields touch leads and encapsulation elements from static interference, ensuring the normal functioning of the touch layer and encapsulation, thus maintaining the display panel's functionality and reducing parasitic capacitance for improved signal transmission.
Implementation Method 1
the electrostatic protective layer covers the first touch leads and covers the encapsulation element in the direction perpendicular to the surface of the display panel, thereby simultaneously protecting the first touch leads and the encapsulation element from electrostatic interference through the electrostatic protective layer
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel includes a display region; a non-display region around the display region; a touch layer including first touch electrodes and second touch electrodes, the first touch electrodes extend along a first direction and are arranged along a second direction, the second touch electrodes extend along the second direction and are arranged along the first direction, the first direction intersects with the second direction; a touch chip, each first touch electrode is connected to the touch chip through a first touch lead, each second touch electrode is connected to the touch chip through a second touch lead; an electrostatic protective layer disposed around the display region; an encapsulation element disposed around the display region. In a direction perpendicular to the display panel, the electrostatic protective layer covers at least the first touch lead and covers the encapsulation element.