Reinforcement Sheet Structure for Foldable Display Waterproofing

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Solution Overview

Problem

As electronic devices become more integrated and miniaturized, there is a need for improved structural reinforcement to maintain durability and water resistance while ensuring ease of use and portability.

Innovation Solution

Incorporating a reinforcement sheet with higher rigidity than a waterproof strip, positioned between a flexible connection member and a support plate, to enhance structural integrity and water resistance in electronic devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a flexible connection member is used to connect the display panel to the support plate, then the device achieves portability and ease of use, but the structural integrity and durability are compromised

Engineering Contradiction:
ImproveportabilityVSAvoidstructural integrity
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The connection structure is divided into multiple segments: the flexible connection member is positioned between the display panel and support plate, with a waterproof strip and reinforcement sheet added as intermediate layers. This segmentation allows each component to perform its specific function while collectively providing both flexibility and structural integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs a composite structure combining multiple materials with different properties: the flexible connection member provides flexibility, the waterproof strip provides water resistance, and the reinforcement sheet with higher rigidity provides structural support. This composite approach resolves the contradiction between flexibility and strength.

Inventive Principle:
Principle #40Composite materials

2Reliability

If a waterproof strip is added between the flexible connection member and support plate, then water resistance is improved, but the device complexity increases

Engineering Contradiction:
Improvewater resistanceVSAvoidstructural complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The waterproof strip is merged with the reinforcement sheet, and both are positioned between the flexible connection member and support plate. This combining of functions into a single integrated structure provides both water resistance and structural reinforcement without proportionally increasing complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The reinforcement sheet acts as an intermediary component between the waterproof strip and the support plate, providing structural support while the waterproof strip handles water resistance. This intermediary approach allows each component to be optimized for its specific function.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Strength

If a reinforcement sheet with higher rigidity is positioned between the flexible connection member and support plate, then structural integrity is improved, but the flexibility of the connection is reduced

Engineering Contradiction:
Improvestructural integrityVSAvoidflexibility
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The connection path is segmented into multiple components: the flexible connection member maintains flexibility, while the reinforcement sheet and waterproof strip provide structural support and water resistance. This segmentation allows different parts to have different mechanical properties without compromising the overall system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the connection structure have different mechanical properties: the flexible connection member region provides flexibility for movement, while the reinforcement sheet region provides rigidity for structural support. This local differentiation resolves the contradiction between overall flexibility and local structural integrity.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20260072476A1Electronic device including reinforcement member
Publication Date: 2026.03.12 SAMSUNG ELECTRONICS CO LTD
  • US20260072476A1 patent drawing
  • US20260072476A1 patent drawing
  • US20260072476A1 patent drawing

AI summary

An electronic device includes a housing forming an exterior of the electronic device, a display panel at the housing, a support plate below the display panel, facing the display panel and having a peripheral portion adjacent to an edge of the display panel, a flexible connection member including a flexible portion bent from the edge of the display pane, and an extending portion which extends from the flexible portion and is below the peripheral portion of the support plate, a waterproof strip between the extending portion and the peripheral portion of the support plate and extending along the peripheral portion of the support plate, and a reinforcement sheet between the extending portion and the peripheral portion of the support plate and extending along the waterproof strip. The reinforcement sheet includes a reinforcement material having a rigidity higher than a rigidity of the waterproof strip.