Rollable Display Frame with Link Parts

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Solution Overview

Problem

Mobile terminals with flexible displays face challenges in implementing a structure that allows for smooth rolling and unrolling without complicating the internal structure, and in reducing external forces applied during shape deformation.

Innovation Solution

A mobile terminal design featuring a body with a deformable display and a frame part that includes a rear plate and link parts with rotatable link members, allowing the display to be rolled or unrolled along the body's surface while minimizing external forces through magnetic attraction and guided movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a flexible display is used to enable rolling and unrolling, then portability and convenience are improved, but the internal structure becomes complicated

Engineering Contradiction:
Improverolling and unrolling convenienceVSAvoidinternal structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The frame part is divided into multiple link parts, each consisting of several link members that can rotate relative to each other. This segmentation allows the frame to adapt to the curved surface of the body while maintaining structural simplicity through modular, repeating units

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The link parts are designed to be dynamically adjustable, allowing the frame to change its shape from a curved configuration (when rolled) to a substantially planar configuration (when unrolled). This dynamic adaptability enables the frame to accommodate the flexible display in both rolled and unrolled states without requiring complex fixed structures

Inventive Principle:
Principle #15Dynamics

2Volume of moving object

If the display is deformed along the body surface, then portability is improved, but external force applied to the display increases

Engineering Contradiction:
Improvestorage compactnessVSAvoidexternal force on display
Core Design Contradiction:
Volume of moving objectVSForce

Solution Approach 1:

The frame part acts as an intermediary structure between the flexible display and the body. It provides mechanical support and distributes the forces required for deformation across its link members, preventing excessive localized stress on the display while enabling the rolling motion

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces direct mechanical deformation of the display with a guided mechanical system using rotatable link members. Instead of applying force directly to the display, the link parts provide a mechanical pathway that guides the deformation, reducing the external force required and protecting the display from excessive stress

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If link parts with multiple link members are used, then rolling smoothness is improved, but device complexity increases

Engineering Contradiction:
Improverolling smoothnessVSAvoidlink part complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

Each link part is designed with specific local characteristics - the link members within a link part are configured to work together to provide smooth rolling motion in that local region. This local optimization, when replicated across multiple link parts, achieves overall smooth rolling without requiring the entire structure to be uniformly complex

Inventive Principle:
Principle #3Local quality

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

Enhances portability and convenience by enabling easy rolling and unrolling of the display, while maintaining a stable structure and reducing external forces applied during deformation, thus improving user experience and storage capabilities.

Implementation Method 1

minimizing external forces through magnetic attraction and guided movement

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS12034878B2Mobile terminal
Publication Date: 2024.07.09 LG ELECTRONICS INC
  • US12034878B2 patent drawing
  • US12034878B2 patent drawing
  • US12034878B2 patent drawing

AI summary

The present invention relates to a mobile terminal structure comprising: a body; a display deformed along the outer surface of the body by means of an external force; and a frame part which supports the display and which is modified into a shape of encompassing the outer surface of the body, wherein the frame part comprises: a rear plate which is coupled to one surface of the display and which can be modified together with the display so as to correspond to the outer surface of the body; and link parts which are respectively provided to both sides of the rear plate and which include a plurality of link members arranged in parallel to each other, and the display can be wound or unwound together with the rear plate along the outer surface of the body by means of the rotation between the connected link members of the link parts.