Color Conversion Panel Low Refractive Layer

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Solution Overview

Problem

Current display technologies face challenges in achieving high luminous efficiency due to light reflection and loss, particularly in OLED and quantum dot display devices, where low refractive index materials are not effectively utilized to minimize reflection and enhance light transmission.

Innovation Solution

A color conversion panel is designed with a low refractive layer made of a carbosilane-siloxane copolymer, a color conversion layer containing quantum dots, and a planarization layer, where the low refractive layer has a refractive index of less than or equal to 1.30 in the 500 nm to 550 nm wavelength range, reducing light reflection and enhancing luminous efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If conventional materials are used for the low refractive layer, then the refractive index is higher, but light reflection increases and luminous efficiency decreases

Engineering Contradiction:

Improveluminous efficiencyVSAvoidlight reflection

Core Design Contradiction:

Loss of energyVSObject-affected harmful factors

Solution Approach 1:

The patent changes the refractive index parameter of the low refractive layer by using a carbosilane-siloxane copolymer with a specifically controlled refractive index of less than or equal to 1.30 in the 500 nm to 550 nm wavelength range. This parameter change directly reduces light reflection and improves luminous efficiency in OLED and quantum dot display devices.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs a carbosilane-siloxane copolymer as a composite material for the low refractive layer. This composite material combines carbosilane and siloxane components to achieve the desired low refractive index property while maintaining film formation and durability, effectively reducing light reflection without compromising device performance.

Inventive Principle:

Principle #40Composite materials

2Loss of energy

If the refractive index of the coating layer is lowered, then light reflection decreases and luminous efficiency increases, but the thickness margin becomes narrower

Engineering Contradiction:

Improvelight reflection lossVSAvoidcoating layer thickness margin

Core Design Contradiction:

Loss of energyVSLength of stationary object

Solution Approach 1:

The patent optimizes the refractive index parameter to less than or equal to 1.30, which provides an optimal balance between reducing light reflection and maintaining sufficient thickness margin for manufacturing. This parameter optimization ensures both high luminous efficiency and practical manufacturability.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If low refractive index materials are used, then light transmission efficiency increases, but material selection and manufacturing complexity increase

Engineering Contradiction:

Improvelight transmission efficiencyVSAvoidmaterial selection and manufacturing

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The carbosilane-siloxane copolymer serves as a well-established composite material in the industry, balancing low refractive index performance with manufacturability. This material choice simplifies the selection process while achieving superior light transmission efficiency.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

By specifying a clear refractive index threshold (≤1.30), the patent simplifies material selection criteria and manufacturing control, making it easier to implement low refractive index materials while maintaining high light transmission efficiency.

Inventive Principle:

Principle #35Parameter changes

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 significantly improves luminous efficiency by minimizing light reflection and maximizing light transmission, resulting in enhanced optical properties and improved image quality in display devices.

Implementation Method 1

low refractive layer disposed on one surface of the substrate and including a carbosilane-siloxane copolymer, wherein the low refractive layer has a refractive index of less than or equal to 1.30 in a wavelength of 500 nm to 550 nm

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 2

minimizing light reflection and maximizing light transmission

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 3

the color conversion member includes a quantum dot

Methodology Applied

Scientific EffectPhotoluminescence: Photoluminescence

Data Source

PatentUS11781038B2Color conversion panel and manufacturing method thereof

Publication Date: 2023.10.10 SAMSUNG SDI CO LTD

AI summary

A color conversion panel includes a substrate, a low refractive layer disposed on one surface of the substrate and including a carbosilane-siloxane copolymer, a color conversion layer disposed on the low refractive layer and including a color conversion member and a planarization layer covering the low refractive layer and the color conversion layer, wherein the low refractive layer has a refractive index of less than or equal to 1.30 in a wavelength of 500 nm to 550 nm, and the color conversion member includes a quantum dot, and a manufacturing method thereof is provided.