Quantum Dot Substrate With Electrophoretic Layer Formation
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Solution Overview
Problem
The existing manufacturing methods for quantum dot color filters, particularly inkjet printing, face challenges in achieving high-resolution displays due to limited printing accuracy, making it difficult to produce quantum dot color filters for high-resolution display panels.
Innovation Solution
A quantum dot substrate is designed with a substrate, a dam forming grooves, a first electrode within the grooves, a second electrode on the dam, and a quantum dot layer deposited on the first electrode under an electric field, enhancing precision and efficiency in forming the quantum dot layer for high-resolution displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If inkjet printing is used to manufacture quantum dot color filters, then the manufacturing process is simple, but the printing accuracy is limited and cannot achieve high-resolution displays
Solution Approach 1:
The patent replaces the mechanical inkjet printing system with an electric field-based electrophoresis system. Quantum dots are deposited onto the substrate through electrophoretic movement in an electric field, eliminating the mechanical constraints of inkjet printing and achieving much higher precision patterning of quantum dot layers for high-resolution displays
Solution Approach 2:
The patent changes the fundamental parameter of material deposition from mechanical ejection (inkjet) to electric field-driven electrophoresis. This parameter change enables precise control of quantum dot placement and layer formation, achieving high-resolution patterns that were not possible with inkjet printing while maintaining manufacturing feasibility
2Manufacturing precision
If inkjet printing is used for quantum dot color filter manufacturing, then fixed-point printing is required, but this limits the manufacturing efficiency and productivity
Solution Approach 1:
The patent applies preliminary action by pre-dispersing quantum dots in a solution and using electrophoretic fields to guide their deposition. This allows simultaneous or sequential deposition of multiple quantum dot patterns across the substrate without requiring repeated positioning and printing operations, significantly improving manufacturing efficiency while maintaining precision
Solution Approach 2:
By replacing the mechanical inkjet printing system with an electric field-based electrophoresis system, the patent eliminates the sequential fixed-point printing constraint. The electric field can be dynamically adjusted to deposit quantum dots precisely where needed across the entire substrate, improving both precision and productivity simultaneously
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
This approach improves the precision and efficiency of forming the quantum dot layer, enabling the production of high-resolution quantum dot color filters suitable for large-area displays with improved resolution and manufacturing efficiency.
Implementation Method 1
applying a voltage to the first electrode and the second electrode, so that the first quantum dots are deposited on the first electrode located in the first sub-grooves to form a first quantum dot sub-layer
Data Source
AI summary
A quantum dot substrate, a method of manufacturing thereof, and a display panel are provided by the present disclosure. The quantum dot substrate includes a substrate, a dam, a first electrode, a second electrode, and a quantum dot layer. The dam is located on the substrate and enclosed to form grooves. The first electrode is located on the substrate and in the grooves. The second electrode located on the dam. The quantum dot layer is located on the first electrode and in the grooves.