Display Device Frame with Reinforcing Ribs for EMI Grounding
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in reducing weight and production costs while maintaining functionality, as the frame typically uses non-functional materials, and there is a need for improved resistance to electromagnetic interference and electrostatic discharge.
Innovation Solution
The display device incorporates a front frame, main back frame, sub-back frame, panel module, circuit device, and reinforcing ribs, where the main back frame and sub-back frame have different fire resistance, structural strength, and rigidity, and the reinforcing ribs provide electrical connectivity and grounding to enhance electromagnetic interference and electrostatic discharge resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the frame material is reduced or removed to decrease weight, then the weight of the display device is reduced, but the structural strength and rigidity of the frame deteriorate
Solution Approach 1:
The patent applies composite materials by combining a plastic back frame with metal reinforcing ribs to create a hybrid structure. The plastic frame provides lightweight properties while the metal ribs contribute high strength and rigidity, resolving the contradiction between weight reduction and structural strength maintenance.
2Ease of manufacture
If the number of frame elements is reduced to simplify manufacturing and reduce cost, then the production cost is reduced, but the coupling strength between elements deteriorates
Solution Approach 1:
The patent merges the reinforcing rib structure with the back frame by integrating metal ribs directly into the plastic frame body. This combination eliminates the need for separate reinforcing elements and simplifies assembly, while maintaining strong coupling through the integrated structure.
3Object-affected harmful factors
If different materials with varying fire resistance are used in the frame, then the fire resistance is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by using fire-retardant plastic material specifically in the back frame where fire resistance is critical, while using metal ribs for structural reinforcement. This localized material selection improves fire resistance without requiring the entire frame to be made from complex multi-material constructions.
4Length of moving object
If the overall thickness is reduced to achieve thinner display devices, then the aesthetic appeal and modern design are improved, but the space for circuit devices and shielding structures is reduced
Solution Approach 1:
The patent addresses the thickness reduction challenge by moving shielding and circuit arrangement to alternative spatial dimensions. The reinforcing ribs are positioned to provide electromagnetic shielding within the limited thickness, and circuit devices are arranged in optimized layouts that maintain reliability without increasing overall device thickness.
Data Source
AI summary
A display device includes a front frame, a panel module, a main back cover, a sub-back cover, a circuit device and a stand set, wherein the main back cover includes a recess portion sinking from the main back cover toward the panel module. An inner space is formed between the recess portion and the sub-back cover. The circuit device is disposed in the inner space and connected to the recess portion. In different embodiments, the display device includes a reinforcing rib for grounding purpose. The reinforcing rib is disposed on the panel module and is located between the panel module and the main back cover. Furthermore, a through-hole is formed on the recess portion for the reinforcing rib to pass through and electrically couples with the circuit device.