Wireless Module Cover Structure for EMI-Shielded Displays
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Solution Overview
Problem
Display devices face challenges in achieving effective EMI protection while maintaining wireless communication functionality, as non-conductive materials used for wireless communication are prone to warping, chemical cracking, and low rigidity, while conductive materials are necessary for EMI prevention.
Innovation Solution
A display device design incorporating a cover bottom with a combination of non-metallic and metallic parts, featuring a common part and metallic parts with coupling mechanisms, including coupling grooves and protrusions, to enhance EMI prevention without interfering with wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-conductive material (polymer resin) is used for the cover bottom to enable wireless communication, then wireless communication functionality is achieved, but EMI protection is insufficient and structural rigidity is reduced
Solution Approach 1:
The cover bottom is divided into two distinct parts: a non-conductive common part that enables wireless communication and a conductive metallic part that provides EMI protection. This segmentation allows each part to fulfill its specific function without interfering with the other, resolving the contradiction between wireless communication capability and EMI shielding effectiveness.
Solution Approach 2:
Different regions of the cover bottom structure are assigned different material properties: the common part uses non-conductive polymer resin for wireless communication, while the metallic part uses conductive material for EMI protection. This local differentiation of material qualities allows the structure to simultaneously achieve both wireless communication functionality and EMI shielding where needed.
2Adaptability or versatility
If polymer resin is used as the cover bottom material, then wireless communication is enabled, but the structure becomes vulnerable to warping, chemical cracking, and external shocks
Solution Approach 1:
The cover bottom structure combines two different materials with complementary properties: polymer resin providing wireless communication capability and metallic material providing structural strength and rigidity. This composite construction allows the structure to simultaneously achieve wireless functionality and mechanical robustness, overcoming the limitations of using polymer resin alone.
3Reliability
If a conductive material is used for the cover bottom to prevent EMI, then EMI protection is improved, but wireless communication is interfered with
Solution Approach 1:
The cover bottom is segmented into a non-conductive common part for wireless communication and a conductive metallic part for EMI protection. This spatial segmentation ensures that the conductive material is positioned only where EMI protection is needed, while leaving the wireless communication area free from conductive interference.
Solution Approach 2:
Conductive properties are applied locally only to the metallic part of the cover bottom where EMI protection is required, while the common part maintains non-conductive properties to ensure wireless communication functionality. This localized application of conductive quality resolves the contradiction between EMI shielding and wireless communication.
4Adaptability or versatility
If the cover bottom is made entirely of non-conductive material, then wireless communication is maintained, but protection against static electricity and external electricity is insufficient
Solution Approach 1:
The cover bottom structure is segmented into a non-conductive common part and a conductive metallic part. The metallic part specifically addresses the protection against static electricity and external electricity, while the common part maintains wireless communication functionality without conductive interference.
Solution Approach 2:
Conductive material is applied locally to the metallic part of the cover bottom to provide protection against static electricity and external electricity, while the common part remains non-conductive to maintain wireless communication. This localized conductive quality provides electrical protection without compromising wireless functionality.
Data Source
AI summary
Disclosed herein is a display device may include a display panel, an inner plate formed of a metal material and disposed on a rear surface of the display panel, a wireless communication module mounted on a rear surface of the inner plate, a cover bottom arranged to cover the wireless communication module and coupled to the rear surface of the inner plate, and a cover rear arranged to cover the cover bottom and coupled to the rear surface of the inner plate, the cover rear containing a conductive material. The cover bottom may include a common part disposed on a rear surface of the wireless communication module, the common part containing a non-conductive material, and a metallic part coupled to both sides of the common part and extending to a lateral end of the display panel. The display device may improve EMI protection without interfering with wireless communications.