Quantum Dot Color Filter Substrate Area Ratio Optimization
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Solution Overview
Problem
Display panels using quantum dot technology experience a color shift phenomenon due to limited conversion efficiency of quantum dot film layers for red and green light when excited by blue light, leading to suboptimal color reproduction.
Innovation Solution
A quantum dot color filter substrate with a specific area ratio of blue, red, and green sub-pixels (1:X:Y, where 2.5≤X≤5 and 4≤Y≤6) is used to compensate for differences in conversion efficiency, minimizing the blue sub-pixel area, maximizing the green sub-pixel area, and adjusting the red sub-pixel area between the two, thereby addressing the color shift issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dot film layers are used to generate red and green light from blue light, then color gamut and color reproduction capability are improved, but conversion efficiency is limited causing color shift phenomenon
Solution Approach 1:
The patent changes the physical parameter of sub-pixel area ratios to compensate for conversion efficiency differences. By setting specific area ratios (blue: red: green = 1:X:Y where 2.5≤X≤5 and 4≤Y≤6), the patent balances the light output across different colors despite varying quantum dot conversion efficiencies, thereby reducing color shift while maintaining improved color reproduction.
2Device complexity
If quantum dot film layers with limited conversion efficiency are used, then device structure is simplified, but color shift phenomenon occurs
Solution Approach 1:
The patent adjusts the area ratios of sub-pixels as a compensatory parameter to maintain color accuracy despite using simplified quantum dot film layers with limited conversion efficiency. This parameter adjustment allows the system to achieve stable color composition without increasing structural complexity.
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 configuration improves color reproduction by balancing conversion efficiencies across sub-pixels, reducing color shift and enhancing the overall display quality by optimizing the area ratio of blue, red, and green sub-pixels.
Implementation Method 1
A display panel based on quantum dot technology uses blue light to excite quantum dots in a quantum dot film layer to generate light of different colors during displaying
Implementation Method 2
Due to the presence of the quantum confinement effect, an original continuous band structure of a quantum dot material becomes a discrete energy level structure, which can emit visible light after being excited
Data Source
AI summary
A quantum dot color filter substrate, a display panel, and a display device are provided. The quantum dot color filter substrate includes a plurality of pixel units arranged in an array. The pixel unit includes a blue sub-pixel, a red sub-pixel, and a green sub-pixel. The red sub-pixel includes a red quantum dot color filter. The green sub-pixel includes a green quantum dot color filter. An area ratio of the blue sub-pixel, the red sub-pixel, and the green sub-pixel is 1:X:Y, and 2.5≤X≤5, 4≤Y≤6. The quantum dot color filter substrate is used for cooperating with a blue backlight, and for compensating the difference in the conversion efficiency of the blue dot color filter with different colors for the blue light, and improving the color shift phenomenon caused by the difference in the conversion efficiency of the blue dot color filter with different colors to blue light.