Foldable Display Housing With Waterproof Hinge-End Sealing

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Solution Overview

Problem

Foldable flexible displays in electronic devices face issues with gaps between components, leading to potential entry of foreign objects, which necessitate effective waterproofing and dustproofing solutions.

Innovation Solution

The electronic device incorporates a housing structure with pivotable plates and recessed portions, featuring a waterproofing member at the lengthwise ends of the third plate to prevent foreign object entry.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a foldable flexible display is disposed on the entire area of the housing structure, then the display area is increased, but gaps between components are created allowing foreign objects to enter

Engineering Contradiction:
Improvedisplay areaVSAvoidforeign object entry
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

A waterproofing member is introduced as an intermediary element between the first and second plates to seal the gap created by the foldable structure. This mediator prevents foreign objects from entering through the gap while maintaining the full display area configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The waterproofing member functions as a flexible sealing film that can accommodate the folding motion of the display while maintaining the seal. This thin film structure prevents foreign object entry without interfering with the display's flexibility and folding capability.

Inventive Principle:
Principle #30Flexible shells and thin films

2Adaptability or versatility

If multiple components are used in the foldable part to enable folding functionality, then the foldable function is achieved, but the structure becomes more complex and gaps are created

Engineering Contradiction:
Improvefoldable functionVSAvoidhousing structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The waterproofing member is integrated into the housing structure by being disposed between the first and second plates, merging the sealing function with the structural components. This combination approach achieves waterproofing without adding separate complex subsystems.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If recessed portions are added to the first and second plates to accommodate the waterproofing member, then waterproofing performance is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvewaterproofing performanceVSAvoidhousing manufacturing
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The recessed portions are pre-formed in the first and second plates during the manufacturing process, creating preliminary structures that accommodate the waterproofing member. This preliminary action ensures proper sealing while streamlining the assembly process.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4322139B1Electronic device including foldable display
Publication Date: 2025.10.01 SAMSUNG ELECTRONICS CO LTD
  • EP4322139B1 patent drawingFigure 1
  • EP4322139B1 patent drawingFigure 2
  • EP4322139B1 patent drawingFigure 3

AI summary

Provided is an electronic device. The device comprises: a housing including a first plate, a second plate, and a third plate connecting the first plate and the second plate such that the first and second plates can rotate from a folded state to an unfolded state; a flexible display extending from the first plate across the third plate to the second plate; and at least one waterproof member disposed at both ends of the third plate in the longitudinal direction. The first plate may include at least one first concave portion recessed inward from at least a portion of an edge of the first plate. The second plate may include at least one second concave portion recessed inward from at least a portion of an edge of the second plate. At least a portion of the third plate may include a portion formed in a grid pattern. The length of the third plate may be less than the lengths of the first plate and the second plate. The at least one first concave portion and the at least one second concave portion may be disposed at both ends of the third plate in the longitudinal direction.