Foldable Display Hinge Mechanism for Continuous Screen Unity

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Solution Overview

Problem

Conventional display devices face challenges in achieving a balance between portability and screen size, as traditional hinge structures hinder the creation of a continuous screen when unfolded and require large sizes for user viewing.

Innovation Solution

A 360-degree foldable hinge structure that allows the display device to be folded like a book, incorporating a hinge module with side-by-side hinge shafts, a slide bracket, and a guide plate system to minimize distance between displays and maintain a continuous screen when unfolded, using flexible materials to prevent noise and abrasion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a traditional hinge structure is used, then the device can be folded for portability, but the distance between displays increases and screen continuity is hindered

Engineering Contradiction:
Improvefolded sizeVSAvoiddistance between displays
Core Design Contradiction:
Volume of moving objectVSLength of stationary object

Solution Approach 1:

The hinge structure is segmented into multiple components including a hinge module with first and second hinge shafts, a slide bracket with guide slots, and guide plates. This segmentation allows independent movement of each component to achieve both folding capability and minimal display distance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The slide bracket acts as an intermediary component between the hinge module and the displays. It includes guide slots that guide the movement of slide plates, which in turn control the position of the displays, enabling the displays to move closer while maintaining folding functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Area of stationary object

If the device is unfolded for large screen viewing, then screen area increases, but the hinge structure prevents continuous screen formation

Engineering Contradiction:
Improvescreen areaVSAvoidscreen continuity
Core Design Contradiction:
Area of stationary objectVSStability of the object's composition

Solution Approach 1:

The hinge structure is designed to be dynamic rather than static. The hinge shafts, slide bracket, and guide plates work together to dynamically adjust the distance between displays during unfolding, ensuring that the displays can form a continuous screen at the fully unfolded position while maintaining structural stability.

Inventive Principle:
Principle #15Dynamics

3Strength

If rigid hinge components are used, then structural strength is maintained, but noise and abrasion increase during folding

Engineering Contradiction:
Improvestructural strengthVSAvoidnoise and abrasion
Core Design Contradiction:
StrengthVSObject-generated harmful factors

Solution Approach 1:

Flexible cushioning pieces are introduced into the hinge structure at contact points between rigid components. These flexible elements absorb impact and reduce friction during folding movements, thereby decreasing noise and abrasion while maintaining the overall structural strength provided by the rigid hinge components.

Inventive Principle:
Principle #30Flexible shells and thin films

Data Source

PatentEP2829945B1Display device
Publication Date: 2019.09.04 LG ELECTRONICS INC
  • EP2829945B1 patent drawingFigure 1
  • EP2829945B1 patent drawingFigure 2
  • EP2829945B1 patent drawingFigure 3

AI summary

A display device is disclosed. The display device includes a hinge module comprising a pair of hinge shafts arranged side by side, a pair of hinge brackets having one ends coupled to the hinge shafts, respectively, and the other ends in which slide slots are formed, a pair of slide brackets coupled to the slide slots, the slide brackets which are horizontally movable along the slide slots, and a pair of bodies coupled to the slide brackets, respectively, such that the display device may be foldable 0∼180 degrees to be folded and unfolded like a book.