Semiconductor-Particle Compositions for Thin Display Wavelength Conversion
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Solution Overview
Problem
Conventional wavelength conversion films formed from compositions containing quantum dots degrade in optical properties as the films become thinner, posing a challenge for thinner display devices.
Innovation Solution
A composition comprising semiconductor particles and a resin, with a semiconductor particle content ratio of more than 30% by mass, along with specific ratios of solvent and thiol group-containing compounds, is used to form films with excellent emission intensity, even at reduced thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the film thickness is reduced to make display devices thinner, then the device can be made more compact, but the optical properties of the wavelength conversion film degrade
Solution Approach 1:
The patent changes the compositional parameters of the wavelength conversion film by increasing the semiconductor particle content ratio to more than 30% by mass and controlling the resin content ratio to 70% or less, thereby maintaining optical properties at reduced film thickness
Solution Approach 2:
The patent uses a composite material system consisting of semiconductor particles and resin with specific ratios, where the semiconductor particles provide optical conversion functionality and the resin provides structural support, achieving both thinness and maintained optical performance
2Illumination intensity
If the semiconductor particle content is increased to maintain optical properties in thin films, then emission intensity improves, but the composition becomes more complex
Solution Approach 1:
The patent optimizes the compositional parameters by setting semiconductor particle content ratio to more than 30% and resin content ratio to 70% or less, achieving high emission intensity while controlling composition complexity through defined ratios
Solution Approach 2:
The patent ensures uniform distribution of semiconductor particles throughout the resin matrix, creating local homogeneity that maintains optical performance while simplifying the overall composition structure
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 composition enables the formation of films with enhanced emission intensity and stability, suitable for use in thinner display devices.
Implementation Method 1
a semiconductor particle (A) which emits light having a wavelength different from that of primary light
Implementation Method 2
the number of thiol groups contained in 100 g of the solids content is less than 20.0 mmol
Data Source
AI summary
A composition including a semiconductor particle, from which a film having excellent emission intensity can be formed, a film formed from the composition and a display device including the film are provided. Provided are a composition including a semiconductor particle (A) and a resin (B), wherein the content ratio of the semiconductor particle (A) is more than 30% by mass based on the total amount of the solids content of the composition, a film formed from the composition and a display device including the film.