Flexible Display Wiring with Metal Nanoparticles for Bending Reliability
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Solution Overview
Problem
Conventional display devices using glass substrates are prone to breakage and have high power consumption, while those using plastic films are fragile and lack moisture blocking properties, making it difficult to achieve a compact, lightweight, and reliable flexible display device that can be used on various surfaces and efficiently manage power consumption in indoor environments.
Innovation Solution
A flexible display device with a wiring structure over a film, an insulating layer, and a viscoelastic high molecular material layer, including metal nanoparticles for elasticity, and a manufacturing method that allows for the same mask to be used for multiple display panels of different sizes, reducing manufacturing costs and enabling efficient power management through a cloud computing system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass substrate is used for display device, then reliability is improved, but weight and power consumption increase
Solution Approach 1:
The patent replaces the traditional glass substrate with a flexible plastic film substrate, enabling the display device to be lightweight and bendable while maintaining reliability through proper protective layer design. The flexible substrate allows the device to be carried around without breakage risk.
Solution Approach 2:
The patent employs composite material structures including flexible substrate, protective layers, and functional layers to achieve both light weight and high reliability. The combination of plastic film with protective coatings provides the necessary durability while maintaining flexibility and lightweight characteristics.
2Weight of moving object
If plastic film is used for display device, then weight is reduced and flexibility is improved, but reliability and moisture blocking property deteriorate
Solution Approach 1:
The patent uses flexible plastic film as the substrate to achieve lightweight and bendable display devices that can be carried around without breakage, while incorporating protective layers to maintain reliability.
Solution Approach 2:
The patent combines plastic film substrate with protective layers and functional coatings to create a composite structure that provides both the desired flexibility and weight reduction while maintaining moisture blocking properties and overall device reliability.
3Use of energy by moving object
If display area is reduced to make device compact, then power consumption is reduced, but user experience in touch input and image viewing deteriorates
Solution Approach 1:
The patent employs flexible and bendable display structures that can dynamically adapt to different usage scenarios. The display can be folded or bent to achieve compact form factor for portability while expanding or unfolding to provide large display area for touch input and image viewing when needed.
Solution Approach 2:
The flexible display structure allows the device to be compact when folded for portability, reducing power consumption, while providing a large effective display area when unfolded for optimal touch input and image viewing experience.
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 provides a highly reliable, compact, and energy-efficient flexible display device that can be placed on curved or irregular surfaces, with reduced manufacturing costs and improved power management, allowing for decentralized power consumption control across multiple devices using a cloud computing system.
Implementation Method 1
A flexible display device with a wiring structure over a film, an insulating layer, and a viscoelastic high molecular material layer, including metal nanoparticles for elasticity
Implementation Method 2
A flexible display device with a wiring structure over a film, an insulating layer, and a viscoelastic high molecular material layer
Data Source
AI summary
A power saving system using a plurality of flexible display devices placed on various places is provided. A structure of a bendable portion in a display device is improved. Specifically, a wiring partly including a metal nanoparticle is used. Openings are formed in an insulating layer so that the wiring becomes substantially longer by meandering in cross section. When a plurality of openings are formed and aligned, a portion that is easy to bend is formed along the line where they are aligned. A plurality of display panels are used for one display portion. The flexible display portion can be provided on a surface, specifically, a curved surface of furniture such as a chair or a sofa.