Display Panel Grounding Structure for Static Electricity Discharge
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Solution Overview
Problem
Display devices face challenges in effectively discharging static electricity generated on their surfaces, which can damage the display panel if not properly managed.
Innovation Solution
A display device design featuring a conductive layer between the overcoat layer and the film member, with a sealing member that electrically connects the conductive layer to the chassis member, allowing for the discharge of static electricity. The sealing member includes a conductive material, and the chassis member is made of conductive metal, ensuring effective electrical connectivity and mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional display panel structure is used without a dedicated static electricity discharge path, then the device structure remains simple, but static electricity accumulates on the display surface and may damage the display panel
Solution Approach 1:
The patent applies preliminary action by pre-establishing a static electricity discharge path through the conductive layer and sealing member before static electricity can accumulate and cause damage. The conductive layer is positioned between the overcoat layer and film member, and the sealing member is configured to electrically connect this conductive layer to the chassis member, creating a ready-made discharge pathway that prevents static electricity buildup on the display surface.
Solution Approach 2:
The patent uses intermediary elements to resolve the contradiction. The conductive layer acts as an intermediary between the display panel and the external environment, capturing static electricity. The sealing member then serves as a second intermediary, providing the electrical connection pathway from the conductive layer to the chassis member, ultimately directing static electricity to ground without requiring direct contact between the display panel and discharge components.
2Reliability
If the sealing member is configured to electrically connect the conductive layer and chassis member, then static electricity discharge is enabled, but the manufacturing process becomes more complex
Solution Approach 1:
The sealing member is designed with multi-functionality, serving both as a mechanical seal to protect the display panel edges and as an electrical conductor to provide the static electricity discharge path. By integrating these two functions into a single component, the patent avoids the need for separate sealing and grounding structures, thereby simplifying the overall manufacturing process while ensuring reliable electrical connectivity between the conductive layer and chassis member.
3Reliability
If the conductive layer is positioned between the overcoat layer and film member, then static electricity can be discharged, but the layer structure becomes more complex
Solution Approach 1:
The patent applies merging by integrating the static electricity discharge function into the existing layer structure. The conductive layer is merged with the overcoat layer and film member assembly, positioned between them to capture static electricity generated on the display surface. This integration approach allows the discharge functionality to be incorporated without adding separate external components, thereby minimizing the increase in overall structural complexity while ensuring effective static electricity management.
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 solution enables the effective discharge of static electricity, protecting the display panel from damage and enhancing the mechanical stability of the device by ensuring proper electrical connectivity between the conductive components.
Implementation Method 1
The sealing member electrically connects the conductive layer and the chassis member to each other
Data Source
AI summary
A display device includes: a display panel including a light-emitting element on a top face of a substrate and an overcoat layer on the light-emitting element; a film member on the overcoat layer of the display panel; a conductive layer between the overcoat layer and the film member; a chassis member on a bottom face of the substrate of the display panel; and a sealing member covering a side face of the display panel. The sealing member electrically connects the conductive layer and the chassis member to each other.