Quantum Dot Layer Enhances Display Color Gamut
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display technologies face challenges in increasing color gamut range and transmittance without increasing power consumption, as improving color purity of color filter layers lowers transmittance and requires higher light intensity from the light source, leading to increased power consumption.
Innovation Solution
Incorporating a quantum dot layer with red, green, and blue quantum dots composed of zinc, cadmium, and selenium atoms into the array substrate, which emits blend lights when excited by incident light, allowing for high color purity without enhancing the color filter layer's purity, thereby improving color gamut range and transmittance without increasing light source intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the color purity of the color filter layer is improved to increase color gamut range, then the color purity is improved, but the transmittance is reduced and power consumption increases
Solution Approach 1:
A quantum dot layer is introduced as an intermediary between the light source and the color filter layer. The quantum dot layer converts broad-spectrum light into narrow-band light with high color purity, which then passes through the color filter layer. This intermediary enables high color gamut without requiring the color filter layer to have extremely high purity (which would reduce transmittance), thus maintaining higher transmittance and lower power consumption
Solution Approach 2:
The patent changes the optical parameters of the light by using quantum dots to convert broad-spectrum light into narrow-band light at specific wavelengths. This parameter change (from broad to narrow spectrum) achieves high color purity without requiring the color filter layer to absorb more light, thereby maintaining transmittance and reducing the power consumption needed to achieve the same display brightness
2Manufacturing precision
If the color purity of the color filter layer is improved to increase color gamut range, then the color purity is improved, but the transmittance is reduced
Solution Approach 1:
The quantum dot layer serves as a mediator that performs the color purification function before light reaches the color filter layer. By converting broad-spectrum light into narrow-band light, the quantum dot layer achieves high color purity without requiring the color filter layer to have extremely high purity specifications, which would otherwise reduce transmittance. This allows both high color purity and high transmittance to be achieved simultaneously
Solution Approach 2:
The quantum dot layer performs the color purification action preliminarily, before the light reaches the color filter layer. By pre-converting the light spectrum to narrow-band wavelengths matching the color filter's transmission characteristics, the system achieves high color gamut while the color filter layer can maintain high transmittance, as it doesn't need to work as hard to filter broad-spectrum light
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 quantum dot layer enhances color purity and broadens the color gamut range of the display device without increasing power consumption by emitting pure red, green, and blue lights, which are filtered by the color filter layer, ensuring high display brightness and efficiency.
Implementation Method 1
the quantum dot layer comprising at least three kinds of quantum dots, and any kind of the quantum dots emitting light of a respective wave band when being irradiated and excited by light from an incident portion of the array substrate
Data Source
AI summary
An array substrate, manufacturing method thereof and a display device are provided. The array substrate comprises thin film transistor units (2) arranged in array, and further comprises a quantum dot layer (3) disposed over the thin film transistor units (2). The quantum dot layer includes at least three kinds of quantum dots, any one kind of which emits light of a respective wave band when being irradiated and excited by light from an incident portion of the array substrate. The array substrate can improve color gamut range, transmittance of a display device without increasing the power consumption of the display device.