Slit Adhesive Member Layout for Curved Display Film Attachment

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Solution Overview

Problem

As electronic devices become increasingly compact and multifunctional, there is a need for improved structural designs that enhance durability and functionality while maintaining portability and ease of use.

Innovation Solution

The electronic device incorporates a housing with a supporting member and a display film separated by an adhesive member featuring slits arranged in specific directions, allowing for enhanced structural integrity and flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If an adhesive member is used to attach the film to the supporting member, then the attachment strength is improved, but the device complexity increases due to the need for additional components and assembly steps

Engineering Contradiction:
Improveattachment strengthVSAvoiddevice complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The adhesive member is divided into multiple segments separated by slits, allowing each segment to independently conform to the supporting member's surface features while maintaining overall attachment functionality. This segmentation reduces stress concentration and improves adaptability to curved or irregular surfaces without requiring a completely different attachment mechanism.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adhesive member's physical parameters are modified by introducing slits that change its mechanical properties, allowing it to stretch and conform to curved surfaces. The slits enable the adhesive material to expand and contract dynamically, adapting to surface curvature changes while maintaining bond strength.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If the adhesive member is made flexible to conform to curved surfaces, then the adaptability is improved, but the attachment strength may deteriorate due to reduced structural rigidity

Engineering Contradiction:
Improveadaptability to curved surfacesVSAvoidattachment strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

By segmenting the adhesive member into multiple sections separated by slits, each segment can independently flex and conform to curved surfaces while the collective segments maintain overall attachment strength. The segmentation allows local adaptation without compromising global structural integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adhesive member functions as a composite structure combining flexible adhesive material with structural support from the slit pattern. This composite design provides both the flexibility needed for curved surface adaptation and the structural integrity required for strong attachment.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If the adhesive member includes slits to allow stretching, then the flexibility is improved, but the manufacturing precision becomes more difficult to control

Engineering Contradiction:
ImproveflexibilityVSAvoidmanufacturing precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The segmentation into slits creates a modular structure that is more tolerant of manufacturing variations. Each slit segment can be independently controlled, and minor dimensional variations in individual segments do not propagate through the entire adhesive member, improving overall manufacturing precision control.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4696753A1Adhesive member and electronic device comprising same
Publication Date: 2026.02.18 SAMSUNG ELECTRONICS CO LTD
  • EP4696753A1 patent drawingFigure 1
  • EP4696753A1 patent drawingFigure 2
  • EP4696753A1 patent drawingFigure 3

AI summary

The present disclosure relates to an electronic device. The electronic device according to one embodiment of the present disclosure comprises: a housing comprising a support member extending in a first direction; a display comprising a film facing the support member; and an adhesive member, which is arranged between the support member and the film, comprises a plurality of slits arranged in the first direction, and has a width in a second direction crossing the first direction, wherein at least any one from among the plurality of slits comprises: a first slit portion which extends in the first direction, and which faces, in the width direction of the adhesive member, a part of another slit adjacent to the first slit portion from among the plurality of slits; a second slit portion which is spaced apart from the first slit portion, and which faces, in the width direction of the adhesive member, a part of another slit adjacent to the second slit portion from among the plurality of slits; and a third slit portion which connects the first slit portion and the second slit portion and which extends to be tilted in the first direction.