Retractable Display Panel with Nested Housing for Damage Protection

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Solution Overview

Problem

Display devices, such as LCD and light emitting display devices, face challenges in size management and user demand satisfaction due to increased volume and the need for additional always-on-display functionality, which complicates space usage and damage prevention.

Innovation Solution

A display device with a module housing that includes a first and second moving plate, driven by belts, allowing the display panel and rear cover to be pulled up and down, enabling flexible accommodation and mode switching between always-on and normal modes, while minimizing external exposure to reduce damage risk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the display device volume is increased to meet user demand for larger screens, then the display area is improved, but the risk of damage to the display panel increases and more installation space is required

Engineering Contradiction:
Improvedisplay areaVSAvoidrisk of damage
Core Design Contradiction:
Area of moving objectVSObject-affected harmful factors

Solution Approach 1:

The display panel is nested within the module housing and can be retracted internally when not in use or during transport, protecting it from external damage while maintaining large display area when deployed

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of moving object

If the display device volume is increased to meet user demand for larger screens, then the display area is improved, but the installation space required increases

Engineering Contradiction:
Improvedisplay areaVSAvoidinstallation space
Core Design Contradiction:
Area of moving objectVSArea of stationary object

Solution Approach 1:

The display panel is designed to be movable between retracted and extended positions, allowing the installation space to be minimized when the display is not in use while providing large display area when needed

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If an always-on-display device is added to provide continuous display functionality, then user demand for always-on display is satisfied, but the device complexity increases

Engineering Contradiction:
Improvedisplay mode flexibilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The module housing serves multiple functions: it protects the display panel, provides mounting structure, enables retraction mechanism, and supports both always-on-display and normal display modes through a single integrated design

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Ease of operation

If the display panel is externally exposed for normal display mode, then display functionality is improved, but the risk of damage from external factors increases

Engineering Contradiction:
Improvedisplay functionalityVSAvoidrisk of damage
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The display panel can dynamically change its exposure state between retracted (protected) and extended (functional) positions, allowing users to balance protection and functionality based on usage conditions

Inventive Principle:
Principle #15Dynamics

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

The solution allows for efficient space usage and reduced risk of damage by enabling the display panel to be internally housed or externally extended as needed, satisfying user demands for diverse display modes without additional mounting constraints.

Implementation Method 1

belt coupling portions on the opposite sides, the belt coupling portions are coupled to a first driving belt

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4012490B1Display device and driving device for display device
Publication Date: 2024.10.30 LG DISPLAY CO LTD
  • EP4012490B1 patent drawingFigure 1
  • EP4012490B1 patent drawingFigure 2
  • EP4012490B1 patent drawingFigure 3

AI summary

A display device includes a display panel, a module housing accommodating the display panel and including a rear cover, a first moving plate connected to the display panel and positioned at a first side of the display panel, a second moving plate connected to the rear cover of the module housing and positioned at a second side of the display panel, a first driving member for pulling up and down the first moving plate, and a second driving member for pulling up and down the second moving plate.