Quantum Dot Diaphragm Margin Phosphor Layer
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Solution Overview
Problem
Quantum dot diaphragms used in liquid crystal displays face a technical defect where the area along the cutting line becomes useless when cut, limiting their application in mobile electronic products with narrow frames, which hampers effective color gamut conversion.
Innovation Solution
Incorporating a quantum phosphor layer in the color gamut non-effective region of the quantum dot diaphragm, allowing for post-cutting coating and assembly, ensuring uniform light emission and improved color gamut conversion, while maintaining flatness and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the quantum dot diaphragm is cut to fit narrow frame products, then the adaptability to mobile electronic products is improved, but an area along the cutting line with width about 1 mm becomes useless, reducing the area utilization and increasing loss of substance
Solution Approach 1:
The quantum phosphor layer is pre-formed as an integrated part of the quantum dot diaphragm structure before cutting. This preliminary formation ensures that the phosphor layer extends into the margin areas, so when the diaphragm is cut to fit narrow frames, the phosphor layer is already positioned to utilize the full available area, eliminating waste and enabling adaptability to different product sizes.
2Reliability
If the quantum phosphor layer is coated on the whole quantum dot diaphragm, then the color gamut conversion function is improved, but the manufacturing cost increases since quantum phosphor is relatively expensive
Solution Approach 1:
The quantum phosphor layer is selectively coated only in the color gamut non-effective region (the margin area surrounding the conversion region) rather than the entire diaphragm. This local application maintains the essential color gamut conversion function while significantly reducing the amount of expensive quantum phosphor material required, thereby lowering manufacturing costs.
3Reliability
If the color gamut non-effective region is provided with quantum phosphor layer, then the color gamut conversion function is improved and useless area is eliminated, but the manufacturing procedure complexity increases
Solution Approach 1:
The formation of the quantum phosphor layer in the color gamut non-effective region is merged with the existing quantum dot diaphragm manufacturing process. The phosphor layer is applied as an integrated step in the same production line, combining the diaphragm fabrication and phosphor coating operations, which simplifies the overall manufacturing procedure despite the additional functional layer.
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 eliminates the defect of useless areas during cutting, enhances color gamut conversion, and simplifies manufacturing, enabling high color gamut designs in various liquid crystal display devices.
Implementation Method 1
the quantum phosphor layer comprises a variety of quantum dots that can convert light received into light with different colors, which forms white light after mixture thereof
Implementation Method 2
the quantum phosphor layer comprises a plurality of transparent regions through which blue light can transmit, and a plurality of first quantum dot regions and second quantum dot regions which can at least be excited by the blue light and emit red light and green light respectively
Data Source
AI summary
A quantum dot diaphragm is disclosed. The quantum dot diaphragm comprises a color gamut conversion region and a color gamut non-effective region surrounding the color gamut conversion region, wherein the color gamut non-effective region is provided with a quantum phosphor layer. According to the present disclosure, the color gamut non-effective region is provided with the quantum phosphor layer, so that the technical defect that an area of the diaphragm along the cutting line would become useless when the diaphragm is cut can be eliminated, and a color gamut conversion function of the quantum dot diaphragm can be further improved. The manufacturing procedure of the quantum dot diaphragm according to the present disclosure is simple. After the quantum dot diaphragm is cut, the color gamut non-effective region of the quantum dot diaphragm could be coated with the quantum phosphor, and then the quantum dot diaphragm needs to be assembled to the module product, so that the electronic products with high color gamut can be obtained.