Foldable Display Self-Support and Drop Protection

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Solution Overview

Problem

Current foldable screens are inconvenient to use as they require external brackets for support and lack effective anti-drop mechanisms, making them prone to damage when dropped.

Innovation Solution

A foldable display device design featuring a middle frame with folding and non-folding parts, supported by a rotatable support assembly and buffer strips, including elastic blocks and buffer strips to absorb impact, allowing for self-support and protection against drops.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If external brackets are used to support the foldable display device, then the device can be supported, but the device complexity increases and ease of operation deteriorates

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The support assembly is integrated into the foldable display device itself, merging the support function with the device structure. The support frames are connected to the middle frame through rotating connections, allowing the device to support itself without external brackets, thereby improving ease of operation while maintaining compact design.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The foldable display device is designed to support itself through its own integrated support assembly. The support frames can be rotated to different positions to provide self-support during different usage scenarios, eliminating the need for external brackets and making the device self-sufficient.

Inventive Principle:
Principle #25Self-service

2Reliability

If no anti-drop mechanism is provided, then the device complexity is reduced, but the reliability deteriorates when dropped

Engineering Contradiction:
ImprovereliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Buffer strips are disposed around the middle frame at positions that would experience impact during a drop. These buffer strips provide beforehand cushioning to absorb impact forces before they reach critical components, improving reliability without adding complex active protection systems.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The buffer strips are made of elastic materials that combine cushioning properties with structural integrity. This use of composite materials allows the anti-drop mechanism to be both effective and compact, improving reliability while minimizing the increase in device complexity.

Inventive Principle:
Principle #40Composite materials

3Object-affected harmful factors

If buffer strips are added around the middle frame, then the anti-drop protection is improved, but the device complexity increases

Engineering Contradiction:
Improveanti-drop protectionVSAvoiddevice complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

Buffer strips are strategically disposed at specific locations around the middle frame where impact forces would be most severe during a drop. This localized approach provides effective anti-drop protection at critical points without adding buffering elements throughout the entire device, thereby improving protection while minimizing the increase in device complexity.

Inventive Principle:
Principle #3Local quality

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 design enhances usability by eliminating the need for external support and provides robust anti-drop protection, preventing damage to the flexible display panel when the device is accidentally dropped.

Implementation Method 1

Four corners of the middle frame are covered with elastic blocks

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

Buffer strips are disposed around the middle frame, and the support assembly includes support frames respectively disposed on the non-folding parts positioned at opposite two sides of the folding part

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 3

an elastic ball and an elastic column connected to the elastic ball are disposed on the non-folding part close to the first side, and the elastic ball is connected to the first buffer strip through the elastic column

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11357121B2Foldable display device
Publication Date: 2022.06.07 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
  • US11357121B2 patent drawing
  • US11357121B2 patent drawing

AI summary

A foldable display device is provided, including a middle frame, a flexible display panel positioned on the middle frame, and a support assembly. The middle frame includes a folding part and non-folding parts positioned at two opposite sides of the folding part. The support assembly is disposed on the back of the middle frame, and buffer strips are disposed around the middle frame. The support assembly includes support frames that are rotatable relative to the non-folding parts, which can not only prevent holding the display panel by hand or using an external bracket for supporting the display panel, but also prevent damages to the flexible display panel when it is dropped.