Quantum Dot Partition Structure for High-Definition Display Panels
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Solution Overview
Problem
Current display technologies face challenges in achieving high photo-efficiency and absorption ratios in micro-LED devices due to difficulties in producing wavelength conversion structures with precise quantum dot compositions and geometries for high-definition displays.
Innovation Solution
A display panel with a wavelength conversion structure featuring a partition wall and quantum dot composites in defined spaces, where the quantum dot composites are formed using ink compositions with specific viscosities and contact angles, allowing for efficient light conversion and improved luminous properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to produce wavelength conversion structures, then manufacturing process is simpler, but manufacturing precision and quantum dot composition accuracy deteriorate
Solution Approach 1:
The wavelength conversion structure is segmented into multiple distinct spaces (first space, second space, third space) separated by partition walls, with each space containing quantum dots of specific sizes and compositions. This segmentation enables precise control over quantum dot distribution and optical properties in different regions, resolving the contradiction between manufacturing precision and structural complexity.
Solution Approach 2:
Different quantum dot composites with specific size ranges and compositions are placed in different spaces within the wavelength conversion structure. The first quantum dot composite contains quantum dots of a first size range, the second contains quantum dots of a second size range, and the third contains quantum dots of a third size range. This local quality approach ensures precise wavelength conversion characteristics in each region while maintaining overall manufacturing feasibility.
2Loss of energy
If quantum dot composites are used to improve photo-efficiency, then absorption ratio improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for quantum dot sizes (first size range, second size range, third size range) and their corresponding compositions to optimize absorption ratio and photo-efficiency. By controlling these parameters within defined ranges rather than requiring exact values, the invention achieves high absorption efficiency while maintaining manufacturing feasibility.
Solution Approach 2:
The wavelength conversion structure uses composite materials comprising quantum dots embedded in matrix materials within sealed spaces. These composite structures combine the optical properties of quantum dots with the structural stability of the matrix and sealing environment, achieving high absorption ratio while relaxing manufacturing precision requirements through material-level solutions rather than requiring perfect geometric precision.
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 enhances the photo-efficiency and absorption ratio of micro-LED devices, enabling higher definition and color purity by effectively utilizing quantum dot composites within the wavelength conversion structure.
Implementation Method 1
a first quantum dot composite and a second quantum dot composite disposed in the first space and the second space, respectively... the first quantum dot composite includes a first matrix and a plurality of first quantum dots dispersed in the first matrix
Data Source
AI summary
A display panel including a wavelength conversion structure that includes a base structure including partition walls that define a first space and a second space, a first quantum dot composite disposed in the first space, and a second quantum dot composite disposed in the second space. The height of the partition wall is greater than or equal to about 5 micrometers and less than or equal to about 50 micrometers, and the first quantum dot composite provides a first top surface and the second quantum dot composite provides a second top surface. A production method for making the wavelength conversion structure uses a first ink composition that includes first quantum dots and a first matrix, and a second ink composition that includes second quantum dots and a second matrix.