Rollable Display Support Plate Mesh Pattern

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Solution Overview

Problem

Conventional display devices face issues with supporting the display panel when it is wound or unwound, leading to potential twisting and bending, which affects the panel's flatness and usability.

Innovation Solution

A rollable display device design featuring a display panel, a roller for winding and unwinding, a housing unit, a head bar, and a support plate that is fixed to both the head bar and the housing unit, forming a mesh pattern to minimize twisting and bending by providing structural support to the rear surface of the display panel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display panel is made flexible to enable rolling, then the device can be wound and unwound, but the display panel becomes prone to twisting and bending when unwound

Engineering Contradiction:
Improverolling capabilityVSAvoidpanel flatness
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The support plate is divided into a mesh pattern of multiple segments connected by hinge portions, allowing each segment to move independently while maintaining overall structural support. This segmentation enables the support plate to adapt to the curved shape during rolling while providing stability when unwound

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support plate transitions from a rigid structure to a dynamic, adaptable structure through the mesh pattern with hinge portions. When the display panel is wound, the support plate segments can flex and rotate to accommodate the curved shape. When unwound, the segments stabilize to provide flatness support

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If a rigid support structure is added to maintain panel flatness, then the panel remains stable when unwound, but the structure becomes complex and difficult to roll

Engineering Contradiction:
Improvepanel flatnessVSAvoidsupport structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

Instead of a single rigid support plate, the structure is segmented into multiple smaller plates connected by hinges. This provides the necessary support for flatness while allowing the segmented structure to flex and roll without the complexity of a large rigid structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support plate is designed as a thin, flexible mesh structure rather than a thick rigid plate. This provides minimal support for flatness while maintaining flexibility for rolling, avoiding the complexity of bulky rigid support structures

Inventive Principle:
Principle #30Flexible shells and thin films

3Stability of the object's composition

If the support plate is made rigid to prevent twisting, then the panel remains flat when unwound, but the support plate cannot be guided to bend properly when wound

Engineering Contradiction:
Improvepanel flatnessVSAvoidwinding operation
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The support plate is designed with dynamic characteristics through the mesh pattern and hinge portions, allowing it to transition between rigid-like stability when unwound and flexible adaptability when wound. The hinge portions enable controlled bending during winding while maintaining flatness during unwinding

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11527179B2Display device
Publication Date: 2022.12.13 LG DISPLAY CO LTD
  • US11527179B2 patent drawing
  • US11527179B2 patent drawing
  • US11527179B2 patent drawing

AI summary

A display device includes a display panel, a roller around which the display panel is wound or unwound, a housing unit which accommodates the display panel and the roller, a head bar connected to one end of the display panel, and a support plate which supports a rear surface of the display panel, has one side fixed to the head bar, and the other side fixed to the housing unit, and forms a mesh pattern.