Single Crystal Perovskite Color Conversion Layer for Wide Color Gamut Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional organic light emitting diode displays have a limited color gamut, which restricts their color representation capabilities.
Innovation Solution
A display panel is manufactured using a single crystal perovskite color conversion layer on a substrate, where blue light is converted into red and green light, enhancing the color gamut by forming perovskite seed crystals through a specific precursor solution process and inkjet printing, and combining it with a blue light emitting layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional organic light emitting diode displays are used, then the display can be manufactured with standard processes, but the color gamut is not wide enough
Solution Approach 1:
The patent changes the material parameter from conventional organic light emitting materials to single crystal perovskite materials, which have superior optical properties and wider color gamut. This parameter change enables the display to achieve wider color representation while maintaining compatibility with existing manufacturing processes through solution-based fabrication methods
Solution Approach 2:
The patent employs composite material structure by combining single crystal perovskite color conversion layer with conventional display components. The perovskite layer is formed using solution processing with specific precursors and additives, creating a composite system that integrates new material properties with existing display technology
2Quantity of substance
If single crystal perovskite color conversion layer is formed using the described process, then the color gamut is significantly widened, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies preliminary action by first forming perovskite seed crystals in a controlled manner before growing the final single crystal structure. The process includes preliminary steps of depositing perovskite precursor solution, annealing to form seeds, and then growing single crystals from these seeds, which simplifies the overall manufacturing by breaking down the complex crystallization process into manageable stages
Solution Approach 2:
The patent uses intermediary substances including perovskite precursor solutions with specific compositions and additives that facilitate the formation and growth of single crystals. These intermediary materials enable controlled crystallization and serve as building blocks for the final perovskite structure, making the manufacturing process more controllable and reproducible
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 widens the color gamut of the display panel, offering improved color representation and stability due to lower defect density and longer carrier migration distance of single crystal perovskite compared to polycrystalline perovskite.
Implementation Method 1
the single crystal perovskite color conversion layer is configured to receive blue light to emit at least red light and green light
Implementation Method 2
heating the perovskite precursor solution until perovskite seed crystals are formed
Data Source
AI summary
The present disclosure provides a display panel and a manufacturing method thereof. The display panel includes a first substrate, a second substrate, a blue light emitting layer, and a single crystal perovskite color conversion layer. The single crystal perovskite color conversion layer includes red light single crystal perovskite units disposed on red subpixel areas and green light single crystal perovskite units disposed on green subpixel areas. The red light single crystal perovskite units receive blue light to emit red light, and the green light single crystal perovskite units receive blue light to emit green light.