Array Substrate with Lyophobic Blocking Layer for Quantum Dot Uniformity
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Solution Overview
Problem
Quantum dot display panels in related technologies have a low light utilization rate due to the agglomeration phenomenon of scattering particles, leading to inefficient light usage.
Innovation Solution
An array substrate with a base substrate, electrode structure, function layer, and lyophobic blocking layer featuring through holes that allow quantum dot solutions to enter accommodating cavities only when a specific voltage is applied, ensuring uniform distribution and preventing agglomeration, along with a manufacturing method for patterning and filling these cavities with quantum dot solutions of different colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quantum dot solution is applied to display panels, then color gamut and service life are improved, but light utilization rate decreases due to agglomeration of scattering particles
Solution Approach 1:
The patent divides the quantum dot solution distribution into discrete accommodating cavities arranged in arrays across sub-pixel areas. Each cavity is isolated and controlled, preventing the agglomeration of scattering particles that occurs in continuous solution application. This segmentation ensures uniform distribution of quantum dots while maintaining high color gamut and service life benefits
Solution Approach 2:
The patent applies different properties to different regions: the blocking layer is made hydrophobic to repel water-based quantum dot solutions, while accommodating cavities are designed with specific dimensions to control solution entry. This local differentiation allows precise control over where quantum dots are deposited, preventing agglomeration and improving light utilization rate while maintaining the color and durability benefits
2Loss of energy
If quantum dot solution is uniformly distributed in sub-pixel areas, then light utilization rate is improved, but requires complex voltage control mechanism
Solution Approach 1:
The patent employs dynamic voltage control where the blocking layer's hydrophobic properties interact with applied voltages to dynamically control solution entry. When voltage is applied, it temporarily overcomes the hydrophobic barrier allowing solution entry into specific cavities; when voltage is removed, the hydrophobic effect prevents solution entry. This dynamic mechanism achieves uniform distribution without requiring complex mechanical or chemical control systems
Solution Approach 2:
The blocking layer acts as an intermediary between the quantum dot solution and the accommodating cavities. Its hydrophobic properties serve as a controllable barrier that can be temporarily overcome by voltage application. This intermediary mechanism simplifies the overall control system by using a single material property (hydrophobicity) combined with voltage control rather than requiring multiple complex control mechanisms
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 light utilization by ensuring uniform distribution of quantum dot solutions within sub-pixel areas, improving luminous efficiency and extending the service life of display panels.
Implementation Method 1
a blocking layer arranged on a side, away from the base substrate, of the function layer, and being lyophobic
Implementation Method 2
diameters of the through holes satisfy the following conditions: in response to that a voltage is not applied to the electrode structure, a charged solution on the blocking layer is prevented from entering the accommodating cavities
Implementation Method 3
in response to that a voltage of which the polarity is opposite to the charged solution on the blocking layer is applied to the electrode structure, the charged solution is allowed to enter the accommodating cavities
Implementation Method 4
a charged solution on the blocking layer is prevented from entering the accommodating cavities; and in response to that a voltage of which the polarity is opposite to the charged solution on the blocking layer is applied to the electrode structure, the charged solution is allowed to enter the accommodating cavities
Data Source
AI summary
Embodiments of the disclosure provide an array substrate and a manufacturing method thereof, and a display panel. The array substrate includes a base substrate, and a plurality of sub-pixel areas arranged on the base substrate and arranged in arrays, wherein each sub-pixel area includes an electrode structure, a function layer and a blocking layer arranged on the base substrate in sequence; the function layer includes a plurality of accommodating cavities arranged spaced with each other; the blocking layer is lyophobic and includes through holes in one-to-one corresponding to the accommodating cavities one by one; each sub-pixel area in the structure of the above array substrate includes a plurality of uniformly distributed accommodating cavities, and a charged solution is filled into the accommodating cavities.