Magnetic Suspension Display Module for Impact Protection

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Solution Overview

Problem

Current electronic devices lack protection for their display modules against external forces, such as falls or strikes, which can cause damage when the force is transferred from the device's case to the display.

Innovation Solution

The electronic device incorporates a first and second case with magnets and electromagnets, a display module, and a sensing unit that uses magnetic repulsion to suspend the display module when an acceleration threshold is exceeded, preventing damage from external forces by keeping the display module isolated from the case.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the display module is fixed rigidly to the case, then the structure is simple and stable, but the display module is vulnerable to damage from external forces

Engineering Contradiction:
Improvedisplay module protectionVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies magnetic suspension to create a dynamic support system for the display module. Electromagnets and permanent magnets work together to provide adjustable magnetic force that can adapt to different conditions (normal use vs. impact), allowing the display module to be suspended rather than rigidly fixed. This dynamic approach protects the display while maintaining structural integration.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent introduces magnetic fields as an intermediary between the case and the display module. Instead of direct mechanical contact, the magnetic force acts as a mediator to support the display module, providing both support and protection from impact forces while maintaining positional stability during normal operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the display module is suspended during impact, then damage is prevented, but additional components and control systems are required

Engineering Contradiction:
Improvedisplay module protectionVSAvoidcomponent quantity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs a sensing unit that automatically detects impact conditions and triggers the electromagnetic suspension system without user intervention. The system self-activates when acceleration exceeds a threshold, suspending the display module during impact and reattaching it when normal conditions return, eliminating the need for manual control.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanical shock absorption mechanisms (such as springs or rubber bumpers) with an electromagnetic suspension system controlled by a sensing unit. This substitution allows for more precise and responsive protection while integrating the control function into the existing device architecture.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 effectively prevents damage to the display module by suspending it during accidental drops or strikes, ensuring the module remains operational and undamaged, and reattaches it when the device is in a normal use state.

Implementation Method 1

a sensing unit... When an acceleration sensed by the sensing unit is larger than the threshold value

Methodology Applied
Scientific EffectAcceleration sensing: Accelerometer

Implementation Method 2

the sensing unit controls the electromagnets and the second magnets to repel each other magnetically to make the display module suspended

Methodology Applied
Scientific EffectMagnetic repulsion: Magnetism

Implementation Method 3

the sensing unit controls the pin module to eject a plurality of pins to fix the display module

Methodology Applied
Scientific EffectMechanical constraint: Pin

Data Source

PatentUS8111120B2Electronic device
Publication Date: 2012.02.07 ASUSTEK COMPUTER INC
  • US8111120B2 patent drawing
  • US8111120B2 patent drawing
  • US8111120B2 patent drawing

AI summary

An electronic device having two cases and a display module disposed therebetween is disclosed. Magnets are disposed at the two cases and the display module. When an acceleration sensed by a sensing unit of the electronic device is larger than a threshold value. The display module may be suspended via the magnetic repellent between the magnets disposed at the display module and the magnets disposed at two cases.