Flexible Display Lifting Mechanism with Sync Gears

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Solution Overview

Problem

Current display devices with flexible panels lack the ability to uniformly or differentially adjust lifting speeds of various parts, which can lead to uneven operation and potential mechanical stress during the lifting of flexible display panels.

Innovation Solution

A display device design incorporating a first and second lift member, a drive member, and sync gears that allow for adjustable lifting speeds by varying the distance and rotation direction of elevation members, enabling synchronized or differential lifting of display panel sides through a gear ratio mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a flexible display panel is used to enable bending and folding capabilities, then the display device achieves improved adaptability and versatility, but the lifting mechanism becomes more complex and requires additional components to ensure uniform lifting

Engineering Contradiction:
Improveflexible display capabilityVSAvoidlifting mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The lifting mechanism is divided into multiple independent lift members (first lift member, second lift member, third lift member, fourth lift member), each responsible for lifting a specific region of the display panel. This segmentation allows each component to be simpler while collectively achieving uniform lifting of the entire flexible panel.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple lift members are combined with a common drive member that controls all of them through link members and sync gears. This merging approach enables coordinated operation of multiple components through a single drive source, reducing overall system complexity while maintaining the ability to lift large flexible panels uniformly.

Inventive Principle:
Principle #5Merging (Combining)

2Stability of the object's composition

If multiple lift members are used to lift different parts of the display panel, then uniform lifting is achieved, but the device complexity increases due to additional components and synchronization mechanisms

Engineering Contradiction:
Improveuniform liftingVSAvoidnumber of components
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

Link members and sync gears act as intermediaries between the drive member and multiple lift members. These intermediary components transmit and synchronize the driving force to ensure all lift members move uniformly, achieving stable lifting without requiring complex individual control for each lift member.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The drive member serves multiple functions by controlling all lift members through the link and gear mechanism. This multi-functionality allows a single component to achieve uniform lifting across multiple display panel regions, reducing the need for separate control systems for each lift member.

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

3Speed

If the drive member expands and contracts to control lifting, then precise speed adjustment is achieved, but the device complexity increases due to the linear motor mechanism

Engineering Contradiction:
Improvelifting speed controlVSAvoiddrive mechanism complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The drive member is designed to dynamically expand and contract based on lifting requirements. This dynamic adjustment capability allows precise control of lifting speed and position, adapting to different operational needs while maintaining a relatively simple overall mechanism through the linear motor's inherent controllability.

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 precise control of lifting speeds, ensuring uniform or differential lifting of display panel sides, reducing mechanical stress and enhancing operational efficiency.

Implementation Method 1

the drive member may include a linear motor that expands or contracts in a width direction of the display panel

Methodology Applied
Scientific EffectLinear motor: Linear Motor

Implementation Method 2

a first sync gear connected to another side of the first link member, the first sync gear rotating in association with rotation of the first elevation member, and a second sync gear engaged with the first sync gear and connected to the other side of the second link member

Methodology Applied
Scientific EffectGear mechanism: Gear

Data Source

PatentUS11706885B2Display device
Publication Date: 2023.07.18 SAMSUNG DISPLAY CO LTD
  • US11706885B2 patent drawing
  • US11706885B2 patent drawing
  • US11706885B2 patent drawing

AI summary

A display device includes a display panel, a first lift member connected to a side of the display panel and including a first elevation member rotating in a first rotation direction, a second lift member connected to another side of the display panel and including a second elevation member rotating in a second rotation direction different from the first rotation direction, a drive member connected to the first lift member and the second lift member, the drive member rotating the first elevation member and the second elevation member, a first link member having a side connected to the first elevation member, a second link member having a side connected to the second elevation member, a first sync gear connected to another side of the first link member, and a second sync gear engaged with the first sync gear and connected to another side of the second link member.