Rollable Display Support Structure for Adjustable Screen Size

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Solution Overview

Problem

Current display devices have fixed, rigid structures that cannot adjust their screen size, making them unsuitable for various applications and programs.

Innovation Solution

A retractable display device with a rollable display screen that can be adjusted in size by rolling and unrolling, featuring a flexible display panel supported by a spine-like structure and mechanisms for smooth deployment and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a rigid fixed structure is used for display devices, then structural stability is improved, but adaptability for different applications and screen sizes deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidadaptability for different applications
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent applies the dynamics principle by transforming the rigid fixed structure into a retractable mechanism that allows the display screen to extend and retract. The screen can be adjusted from a compact retracted state to an extended viewing state, enabling the same device to adapt to different application scenarios such as portable use, desktop viewing, or large-screen presentations, thereby resolving the contradiction between structural stability and adaptability.

Inventive Principle:
Principle #15Dynamics

2Area of moving object

If a large screen display device is used, then viewing quality for large audiences is improved, but compactness for storage and transport deteriorates

Engineering Contradiction:
Improvescreen areaVSAvoidvolume for storage
Core Design Contradiction:
Area of moving objectVSVolume of moving object

Solution Approach 1:

The patent implements the nesting principle by designing the display screen to be retractable into the housing body. When not in use, the screen is completely retracted and stored within the compact housing, reducing the device's volume to a portable size. When needed, the screen extends outward to provide a large viewing area, thus resolving the contradiction between screen area and storage volume.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of manufacture

If the screen size is fixed, then manufacturing simplicity is improved, but versatility for different programs and applications deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidversatility for different programs
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by implementing a retractable screen mechanism that allows a single device to provide multiple screen sizes. The device maintains manufacturing simplicity by using a unified housing and display assembly, while the retractable mechanism enables versatility for different programs and applications by adjusting the screen extension length, thus resolving the contradiction between manufacturing simplicity and versatility.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3769180B1Retractable display device
Publication Date: 2025.08.06 INTERDIGITAL MADISON PATENT HLDG
  • EP3769180B1 patent drawingFigure 1A~2C
  • EP3769180B1 patent drawingFigure 3A~4B
  • EP3769180B1 patent drawingFigure 5~7B

AI summary

The disclosure relates to retractable display device (1) including a housing (3) having an internal space (31) defined therein, a rolling axle (32) positioned in the housing (3), an electronic display and a support structure (21) attached to a rear surface of the electronic display. The support structure (21) includes a plurality of juxtaposed support elements (210) capable of being rolled around the axle (32) with the electronic display in a storage position and of being unrolled upward, at least partially out of the housing (3), to provide a substantially planar front surface on which visual information may be displayed.