Foldable Conductive Plate Edge Grounding for Display Surface Quality

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Solution Overview

Problem

In foldable electronic devices, the surface quality of the flexible display can be deteriorated due to the protrusion caused by grounding the conductive plate and the ground within the border of the flexible display.

Innovation Solution

Grounding the conductive plate and the ground through at least a portion of the edge of the flexible display, rather than within its border, to prevent and reduce burn-in and noise while maintaining surface quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the conductive plate and ground are grounded inside the border of the flexible display, then the grounding effect is achieved, but the surface of the flexible display protrudes and surface quality deteriorates

Engineering Contradiction:

Improvegrounding effectVSAvoidsurface quality

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The grounding connection is extracted from the display border area and relocated to the edge of the flexible display. The conductive plate extends beyond the display border to provide a grounding path that does not interfere with the display surface, thereby maintaining both grounding effectiveness and surface quality.

Inventive Principle:

Principle #2Taking out (Extraction)

2Strength

If the conductive plate is used to support the flexible display, then rigidity is increased, but grounding within the border causes surface protrusion

Engineering Contradiction:

ImproverigidityVSAvoidsurface quality

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The conductive plate is designed to extend in a direction beyond the display border, utilizing the edge area of the flexible display. This dimensional extension allows the plate to provide structural support and grounding functionality without occupying space within the display border that would cause surface protrusion.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 approach effectively prevents surface quality deterioration, reduces burn-in, and blocks noise by ensuring the conductive plate and ground are grounded along the edge of the flexible display.

Implementation Method 1

grounding the conductive plate and the ground through at least a portion of the edge of the flexible display

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentEP4007995B1Electronic device including foldable conductive plate

Publication Date: 2025.06.04 SAMSUNG ELECTRONICS CO LTD

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AI summary

Various embodiments relate to an electronic device including a foldable conducive plate. The electronic device may include: a foldable housing at least partially foldable via a hinge; a display including a flexible display panel viewable through a front surface of the foldable housing and being at least partially foldable, and a conductive plate disposed on a rear surface of the flexible display panel and supporting the flexible display panel; a circuit board disposed to face at least a portion of a border of the conductive plate in the foldable housing; and at least one conductive connection member comprising a conductor disposed between the conductive plate and the circuit board and electrically connecting the conductive plate and a ground of the circuit board.