Flexible Display Slide Mechanism Grounding Structure

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Solution Overview

Problem

Slide-type electronic devices face issues with foreign matter infiltration and noise interference due to the sliding mechanism, which can degrade the device's quality over time.

Innovation Solution

The implementation of a ground contact structure using conductive structures between the first and second structures of the electronic device, allowing them to make electrical contact depending on the device's operating state, thereby improving ground performance and reducing noise interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a sliding mechanism is used to expand the display area, then the display area is increased, but foreign matter infiltration and noise interference occur

Engineering Contradiction:
Improvedisplay areaVSAvoidforeign matter infiltration and noise interference
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

A conductive structure is introduced as an intermediary element between the first and second structures. This conductive structure serves multiple functions: it maintains electrical connection (grounding) between the sliding parts, prevents foreign matter infiltration by filling gaps, and reduces noise interference through proper electrical shielding. The conductive structure acts as a mediator that enables the sliding mechanism to function while mitigating its harmful effects.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If conductive structures are added to prevent foreign matter infiltration and reduce noise, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improveground performance and noise stabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The conductive structure is designed to perform multiple functions simultaneously: it provides electrical grounding, prevents foreign matter infiltration, and reduces noise interference. By making the conductive structure multi-functional, the patent avoids adding separate components for each function, thereby improving reliability without proportionally increasing device complexity. The same structural element serves multiple protective and functional purposes.

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

This solution enhances the electronic device's ground performance, stabilizes electrical noise, and prevents foreign matter infiltration by ensuring proper contact between the conductive structures based on the device's operational states.

Implementation Method 1

The electronic device may implement a ground contact structure of the first structure and the second structure through the conductive structures disposed between the first structure and the second structure

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentEP4205375B1Electronic device including flexible display
Publication Date: 2025.02.19 SAMSUNG ELECTRONICS CO LTD
  • EP4205375B1 patent drawingFigure 1
  • EP4205375B1 patent drawingFigure 2
  • EP4205375B1 patent drawingFigure 3

AI summary

An electronic device includes a case including a rear member and side members, a first structure disposed inside the case, a second structure slidably connected to the first structure, a display that is disposed on the second structure, the display including a first region and a second region, and a conductive structure that is disposed between the first structure and the second structure and that electrically connects the first structure and the second structure, wherein a first state of the electronic device is a state in which the first region is exposed on a front surface of the electronic device and the second region is located inside the case to face the rear member, and wherein a second state of the electronic device is a state in which at least part of the second region, together with the first region, is exposed on the front surface of the electronic device.