Ferroelectric Nanoparticle Complexes for Display Light Conversion
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Solution Overview
Problem
Existing light conversion members in display devices suffer from inefficient light conversion and aggregation of light particles, leading to reduced brightness and color reproduction.
Innovation Solution
A light conversion member is fabricated using a resin composition with light conversion particles and ferroelectric materials, where the ferroelectric particles are spontaneously polarized and bonded to the light conversion particles, forming nano-particle complexes that prevent aggregation and maintain a constant interval, enhancing optical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light conversion particles are used to convert wavelength in display devices, then light conversion function is achieved, but the particles aggregate and condense leading to reduced optical performance
Solution Approach 1:
Ferroelectric particles serve as intermediary components between light conversion particles and the resin matrix. These ferroelectric particles with spontaneous polarization create repulsive forces that prevent aggregation of light conversion particles, maintaining their uniform dispersion while enabling effective wavelength conversion functionality
Solution Approach 2:
The patent creates a composite material system consisting of light conversion particles, ferroelectric particles, and resin. This composite structure combines the wavelength conversion capability of light conversion particles with the dispersion-stabilizing property of ferroelectric particles, achieving both functional and structural objectives
2Productivity
If more light conversion particles are added to improve light conversion efficiency, then conversion performance increases, but particle aggregation worsens and manufacturing complexity increases
Solution Approach 1:
The ferroelectric particles act as a mediating component that enables higher concentrations of light conversion particles to be incorporated without aggregation. The spontaneous polarization of ferroelectric particles creates electrostatic repulsion that maintains dispersion uniformity even at higher particle loadings, improving light conversion efficiency without proportionally increasing manufacturing complexity
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 results in high-efficiency light conversion, improved brightness, and enhanced color reproduction in display devices, while reducing the amount of light conversion particles needed and lowering manufacturing costs.
Implementation Method 1
the ferroelectric particles are spontaneously polarized
Implementation Method 2
repulsive force acts between the nano-particle complexes by the ferroelectric particles
Implementation Method 3
a light conversion member to change a wavelength of a light emitted from the light source
Data Source
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AI summary
Disclosed are a light conversion member, a display device including the same, and a method for fabricating the same. The light conversion member includes a host, a plurality of light conversion particles in the host, and a ferroelectric material in the host.