Wireless Power Transmission for Flexible Display Devices

Solution Overview

Problem

Existing display devices face disconnection issues of power wiring due to vibration, particularly in flexible substrates with thicker power wiring and narrower configurations, which compromises flexibility and reliability.

Innovation Solution

The implementation of a wireless power transmission system, where a power transmission unit wirelessly transmits power to a power reception unit, eliminating the need for physical wiring and reducing the risk of disconnection caused by vibrations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power wiring is made thicker to reduce disconnection risk, then reliability improves, but flexibility deteriorates

Engineering Contradiction:

Improvepower wiring connection reliabilityVSAvoidflexible substrate flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent replaces the mechanical wiring connection system with a wireless power transmission system. The power transmission unit transmits power wirelessly to the light source device, eliminating the need for physical power wiring on the flexible substrate. This substitution resolves the contradiction by removing the mechanical constraint entirely, maintaining flexibility while ensuring reliable power delivery through electromagnetic field transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If power wiring is made thicker to reduce disconnection risk, then reliability improves, but device complexity increases

Engineering Contradiction:

Improvepower wiring connection reliabilityVSAvoidflexible substrate structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical wiring connection system with a wireless power transmission system. The power transmission unit transmits power wirelessly to the light source device, eliminating the need for physical power wiring on the flexible substrate. This substitution resolves the contradiction by removing the mechanical constraint entirely, maintaining flexibility while ensuring reliable power delivery through electromagnetic field transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If separate first and second flexible substrates are used, then routing flexibility improves, but disconnection risk due to vibration increases

Engineering Contradiction:

Improvewiring routing flexibilityVSAvoidpower wiring connection reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the mechanical wiring connection system with a wireless power transmission system. The power transmission unit transmits power wirelessly to the light source device, eliminating the need for physical power wiring on the flexible substrate. This substitution resolves the contradiction by removing the mechanical constraint entirely, maintaining flexibility while ensuring reliable power delivery through electromagnetic field transmission.

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

This solution enhances the flexibility and reliability of display devices by preventing power wiring disconnection from vibrations, ensuring consistent power supply to the light source and reducing the likelihood of failure, especially in applications where devices are mounted on movable objects.

Implementation Method 1

at least one power transmission unit that wirelessly transmits power to the power reception unit

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS10082619B2Display device

Publication Date: 2018.09.25 MAGNOLIA WHITE CORP

AI summary

According to an aspect, a display device includes: a display unit; a light source device that irradiates the display unit with light, and that includes a plurality of luminous bodies; at least one power reception unit that receives power for the light source device; and at least one power transmission unit that wirelessly transmits power to the power reception unit.