Foldable Display Shielding Assembly With Bridged EMI Layers

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Solution Overview

Problem

Existing foldable display devices face challenges in maintaining consistent material and performance across folding and non-folding areas, leading to structural complexity and increased manufacturing costs.

Innovation Solution

A display device design incorporating a shielding member with a uniform material across folding and non-folding areas, utilizing a connection member to integrate electromagnetic wave shielding layers and digitizers, ensuring seamless integration and reduced interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If different materials are used for folding area and non-folding area shielding members, then electromagnetic shielding performance can be optimized for each area, but structural complexity and manufacturing cost increase

Engineering Contradiction:
Improveelectromagnetic shielding performanceVSAvoidstructural complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies homogeneity by using the same electromagnetic shielding material (conductive polymer or metal foil) throughout the entire shielding member, including both folding and non-folding areas. This uniform material composition simplifies the manufacturing process and reduces structural complexity while maintaining adequate electromagnetic shielding performance across all regions.

Inventive Principle:
Principle #33Homogeneity

Solution Approach 2:

The shielding member is designed as a universal component that serves multiple functions: electromagnetic shielding, structural support, and compatibility with both folding and non-folding display areas. By using a single material type for the entire shielding member, the patent achieves multi-functionality without increasing manufacturing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If multiple electromagnetic wave shielding layers are added, then electromagnetic interference shielding is improved, but device complexity and manufacturing difficulty increase

Engineering Contradiction:
Improveelectromagnetic interferenceVSAvoiddevice complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent segments the electromagnetic shielding into multiple functional layers: a first electromagnetic wave shielding layer closer to the display panel and a second electromagnetic wave shielding layer farther away. This segmentation allows each layer to address specific electromagnetic interference concerns while maintaining overall system manageability and manufacturing feasibility.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection member acts as an intermediary element that bridges the first and second electromagnetic wave shielding layers, ensuring proper electrical and mechanical connection. This intermediary component facilitates the integration of multiple shielding layers without proportionally increasing device complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Stability of the object's composition

If connection members are added to integrate shielding layers and digitizers, then integration seamlessness is improved, but device complexity increases

Engineering Contradiction:
Improveintegration seamlessnessVSAvoiddevice complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The connection member merges multiple functions into a single component: it electrically connects the first and second electromagnetic wave shielding layers, provides mechanical support, and integrates with the digitizer assembly. This merging approach achieves seamless integration while minimizing the number of separate components required.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connection member is designed as a universal interface that performs multiple functions simultaneously: electrical connection, mechanical support, and structural integration. By making the connection member multi-functional, the patent reduces the need for additional separate components, thereby limiting the increase in device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 simplifies the structure, reduces manufacturing costs, and enhances manufacturing efficiency while effectively shielding electromagnetic fields and interference throughout the display device.

Implementation Method 1

a first electromagnetic wave shielding layer disposed under the shielding member, a second electromagnetic wave shielding layer disposed under the shielding member and spaced apart from the first electromagnetic wave shielding layer, and a connection member disposed under the shielding member, disposed between the first electromagnetic wave shielding layer and the second electromagnetic wave shielding layer

Methodology Applied
Scientific EffectElectromagnetic wave shielding: Faraday Cage

Data Source

PatentUS20250374774A1Display device
Publication Date: 2025.12.04 SAMSUNG DISPLAY CO LTD
  • US20250374774A1 patent drawing
  • US20250374774A1 patent drawing
  • US20250374774A1 patent drawing

AI summary

A display device includes a display panel, a digitizer member disposed under the display panel, a shielding member disposed under the digitizer member, a first electromagnetic wave shielding layer disposed under the shielding member, a second electromagnetic wave shielding layer disposed under the shielding member and spaced apart from the first electromagnetic wave shielding layer, and a connection member disposed under the shielding member, disposed between the first electromagnetic wave shielding layer and the second electromagnetic wave shielding layer, and including an electromagnetic wave shielding sheet.