Color Correction Layer for Display Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices, particularly curved, rollable, and flexible ones, face challenges in achieving an improved color gamut while maintaining reliability and light stability over time.
Innovation Solution
Incorporating a color correction layer with an organic dye and a dithiolene-based metal compound, where the organic dye has a maximum absorption wavelength range between green and red light, and the dithiolene-based metal compound serves as a light stabilizer in the near-infrared region, ensuring the color gamut is enhanced without affecting visible light absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a color correction layer is added to improve color gamut, then color gamut is improved, but light stability and reliability deteriorate due to prolonged light exposure
Solution Approach 1:
The patent combines an organic dye with a dithiolene-based metal compound to form a composite color correction layer. The organic dye provides strong light absorption in the green-red region to improve color gamut, while the dithiolene-based metal compound acts as a light stabilizer that prevents degradation under prolonged light exposure, thus resolving the contradiction between improving color gamut and maintaining light stability.
Solution Approach 2:
The dithiolene-based metal compound serves as an intermediary substance that mediates between the organic dye and light exposure. It protects the organic dye from photodegradation by absorbing excess energy or acting as a sacrificial stabilizer, allowing the color correction layer to maintain both high color gamut and long-term light stability.
2Reliability
If an organic dye with high light absorption is used to improve color gamut, then color gamut is improved, but light stability deteriorates due to potential degradation from light exposure
Solution Approach 1:
The patent converts the potentially harmful effect of light absorption into a beneficial stabilization mechanism. The dithiolene-based metal compound absorbs excess light energy that would otherwise degrade the organic dye, transforming the harmful photodegradation process into a protective stabilization function that preserves color gamut while preventing light-induced degradation.
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 effectively improves the color gamut of display devices, maintaining its effectiveness even after prolonged light exposure and enhancing the reliability of the color correction layer.
Implementation Method 1
an organic dye having a maximum absorption wavelength range longer than a peak wavelength of green light and shorter than a peak wavelength of red light
Implementation Method 2
a dithiolene-based metal compound which serves as a light stabilizer, so that the effect of improving the color gamut may be maintained even if the display device is exposed to light for a long time. In addition, a maximum absorption wavelength range of the dithiolene-based metal compound may be included in the near-infrared region
Data Source
AI summary
A display device includes: a display panel including a light-emitting element to provide a first light; a light control layer disposed on the display panel; and a color correction layer disposed on the light control layer, wherein the color correction layer includes an organic dye and a metal compound including at least one dithiolene moiety, a maximum absorption wavelength of the organic dye is about 580 nm to about 600 nm, and a maximum absorption wavelength of the metal compound is about 700 nm or more.