Sliding Link Structure for Flexible Display Deformation Control

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Solution Overview

Problem

The smooth operation of a flexible display moving in or out of an electronic device is hindered by excessive surface tension and frictional forces, leading to potential deformation of the display during the sliding process.

Innovation Solution

A link structure is introduced to synchronize the sliding of the second housing and a support member, connecting the first and second housings, with a link member and connection portions to ensure synchronized movement, reducing frictional forces and preventing unintended deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display is moved in or out by relative movement of two mechanical structures, then the screen size is variable, but excessive surface tension and frictional force act on support components causing rough operation

Engineering Contradiction:
Improvevariable screen sizeVSAvoidsmooth sliding operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

A link member is introduced as an intermediary component between the first and second housings to synchronize their movement. The link member includes connection portions that connect to both housings and a support member, ensuring coordinated motion and reducing frictional forces during sliding operation, thereby enabling smooth display movement while maintaining variable screen size capability

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the display is moved in or out by relative movement of two mechanical structures, then the screen size is variable, but a portion of the display may be deformed in an unintended direction

Engineering Contradiction:
Improvevariable screen sizeVSAvoiddisplay deformation
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The link member acts as a mediator that synchronizes the movement of the first and second housings during sliding operation. By ensuring coordinated motion through its connection portions, the link member prevents unintended differential movement that could cause display deformation, while still allowing the display to be moved in or out for variable screen size

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The link member creates a synchronized movement system where the first and second housings move in coordination, maintaining equipotential motion conditions. This synchronized movement prevents stress concentration and unintended deformation of the display during the sliding operation

Inventive Principle:
Principle #12Equipotentiality

Data Source

PatentUS12604425B2Electronic device including link structure and capable of sliding operation
Publication Date: 2026.04.14 SAMSUNG ELECTRONICS CO LTD
  • US12604425B2 patent drawing
  • US12604425B2 patent drawing
  • US12604425B2 patent drawing

AI summary

An electronic device is provided. The electronic device includes a first housing, a second housing slidably coupled to the first housing in a first direction, a flexible display of which at least a part is drawn into or taken out of an accommodation space of the electronic device according to sliding of the second housing, a support member sliding by means of the sliding of the second housing and supports the flexible display, and a link structure connecting the first housing, the second housing, and the support member where sliding of the second housing and sliding of the support member are interlinked. The link structure includes a link member, a first connection part for connecting the link member to the support member, a second connection part connecting the link member to the first housing, and a third connection part slidably or rotatably connecting the link member to the second housing.