Foldable Display Support Plate With Recessed CFRP Layers

Solution Overview

Problem

Flexible electronic devices with lattice-patterned openings in their support plates face structural issues and burr formation during processing, which hinder device integrity and foldability.

Innovation Solution

A fiber-reinforced composite structure, such as carbon fiber reinforced plastic (CFRP), is used with crossed and laminated fibers, and recesses are applied selectively to the support plate layers along the folding axis, avoiding through-holes to maintain structural support and flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If openings are arranged in a lattice pattern in the support plate, then flexibility and weight reduction are improved, but structural integrity deteriorates and burr formation occurs during processing

Engineering Contradiction:

Improvesupport plate weightVSAvoidsupport plate structural integrity

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The support plate is segmented into multiple layers with different opening patterns. The first layer has openings arranged in a first pattern while the second layer has openings arranged in a second pattern, creating a hierarchical structure that maintains strength while reducing weight

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The support plate uses a composite structure with multiple layers of different materials or configurations. By combining layers with different opening patterns and fiber orientations, the plate achieves both weight reduction and structural integrity that cannot be obtained with a single uniform structure

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If openings are arranged in a lattice pattern in the support plate, then flexibility is improved, but manufacturing precision deteriorates due to burr formation

Engineering Contradiction:

Improvefolding flexibilityVSAvoidopening edge precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The support plate is divided into multiple layers, each with openings of different patterns. This segmentation allows each layer to be manufactured with appropriate precision for its function, while the combined structure provides the needed flexibility without burr formation issues

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions and layers of the support plate have different opening patterns tailored to their specific functions. The first layer has openings optimized for one aspect of flexibility, while the second layer has openings optimized for another aspect, allowing local optimization of both manufacturing precision and flexibility

Inventive Principle:

Principle #3Local quality

3Reliability

If recess patterns are defined in the first layer, then foldability is preserved and burr formation is prevented, but device complexity increases

Engineering Contradiction:

Improvedevice durabilityVSAvoidsupport plate structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The support plate is segmented into multiple layers with different opening patterns. The first layer has openings arranged in a first pattern while the second layer has openings arranged in a second pattern, creating a hierarchical structure that maintains strength while reducing weight

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The support plate uses a composite structure with multiple layers of different materials or configurations. By combining layers with different opening patterns and fiber orientations, the plate achieves both weight reduction and structural integrity that cannot be obtained with a single uniform structure

Inventive Principle:

Principle #40Composite materials

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 configuration prevents burr formation, enhances device durability, and preserves foldability while streamlining the manufacturing process.

Implementation Method 1

A fiber-reinforced composite structure, such as carbon fiber reinforced plastic (CFRP), is used with crossed and laminated fibers

Methodology Applied

Scientific EffectComposite materials: Composite Materials

Implementation Method 2

crossed and laminated fibers

Methodology Applied

Scientific EffectLamination: Lamination

Implementation Method 3

recesses are applied selectively to the support plate layers along the folding axis, avoiding through-holes to maintain structural support and flexibility

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS20260064160A1Folding electronic device including support plate

Publication Date: 2026.03.05 SAMSUNG DISPLAY CO LTD

AI summary

An electronic device includes a display panel including a first non-folding region, a second non-folding region, and a folding region therebetween. A support plate is disposed below the display panel. A plurality of openings are defined in the support plate, overlapping the folding region. The support plate includes a first layer including a plurality of first fibers, and a second layer disposed above or below the first layer and including a plurality of second fibers. The first layer includes a first surface contacting the second layer and a second surface opposed to the first surface. A plurality of recess patterns are defined in the second surface.