Conductive Foam Connector for Low-Resistance Display Grounding
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Solution Overview
Problem
Existing electronic devices face challenges in maintaining stable electrical connections between conductive components, leading to increased resistance and reduced performance of antenna systems due to oxidation and inadequate contact areas.
Innovation Solution
A conductive connector comprising an elastic foam interior part and a conductive woven fabric exterior part with a coating, which provides a stable conductive path between a display's conductive layer and a bracket's conductive portion, reducing electrical resistance through elastic compression and oxidation prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional conductive connector is used to connect the conductive layer of the display and the conductive portion of the bracket, then the electrical connection is established, but the contact area is insufficient leading to increased electrical resistance
Solution Approach 1:
The patent employs a flexible foam material as the core component of the conductive connector. This foam material can elastically deform to conform to the contact surfaces, maximizing the contact area between the connector and both the display's conductive layer and the bracket's conductive portion. The flexibility allows the connector to maintain intimate contact even with surface irregularities, thereby reducing electrical resistance while ensuring stable electrical connection.
Solution Approach 2:
The conductive connector is constructed as a composite structure combining foam material with conductive elements. The foam provides mechanical flexibility and contact area, while the conductive material (such as conductive adhesive or coated surfaces) ensures low electrical resistance. This composite approach allows the connector to simultaneously achieve both mechanical compliance for large contact area and electrical conductivity for low resistance, resolving the contradiction between connection stability and resistance reduction.
2Reliability
If the conductive connector is exposed to the environment, then it provides electrical connection, but oxidation occurs on the conductive surfaces leading to reduced performance
Solution Approach 1:
The patent applies a protective coating to the conductive surfaces of the connector before they are exposed to the environment. This coating acts as a preliminary protective barrier that prevents oxidation from occurring in the first place. By pre-applying this protective layer, the conductive surfaces are shielded from environmental factors that would cause oxidation, thereby maintaining their electrical performance over time without requiring post-exposure treatment.
Solution Approach 2:
The foam material itself serves as a protective element by physically shielding the conductive surfaces from direct environmental exposure. The foam's cellular structure creates a barrier that limits oxygen and moisture contact with the conductive elements, effectively using the connector's own structure to prevent its own degradation. This converts the foam's primary mechanical function into a secondary protective function against oxidation.
3Strength
If rigid conductive materials are used for the connector, then structural strength is maintained, but contact area with irregular surfaces is reduced
Solution Approach 1:
The connector utilizes a foam-based structure that inherently provides flexibility while maintaining structural integrity. The foam's cellular architecture allows the material to deform elastically under compression, enabling it to adapt to irregular contact surfaces and maximize contact area. Despite this flexibility, the foam maintains sufficient structural strength to support the mechanical loads experienced during device assembly and use, thus resolving the contradiction between rigidity and conformability.
Solution Approach 2:
The patent changes the physical parameters of the connector material from rigid to flexible foam. This parameter change allows the material to exhibit both strength and flexibility characteristics. The foam's compressibility and elastic recovery properties enable it to deform into contact with irregular surfaces, increasing contact area, while its cellular structure provides mechanical strength to maintain connector integrity under operational conditions.
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 conductive connector maintains a low electrical resistance and enhances the conductive portion's functionality as a ground, improving signal performance and reducing oxidation-related issues in electronic devices.
Implementation Method 1
The conductive connector may include an interior part including an elastic foam
Implementation Method 2
The conductive connector may be disposed between the conductive layer of the display and the conductive portion of the bracket, and in contact with the conductive layer of the display
Implementation Method 3
The electronic device may further include a conductive adhesive. The conductive adhesive may attach the conductive connector to the conductive portion of the bracket
Data Source
AI summary
An electronic device includes: a bracket including a conductive portion; a display including a conductive layer; a conductive connector between the conductive layer of the display and the conductive portion of the bracket and contacts the conductive layer of the display; and a conductive adhesive attaching the conductive connector to the conductive portion of the bracket, wherein the conductive connector includes: an interior part including an elastic foam, an exterior part including a conductive woven fabric, a coating portion attached to an inner surface of the conductive woven fabric and attached to the exterior part, and an adhesive attaching the interior part to the coating portion.