Quantum Dot Layer Enhances LCD Out-Screen Brightness
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Solution Overview
Problem
Current liquid crystal display panels have low display contrast and color gamut due to limitations in out-screen brightness, which are not effectively addressed by existing technologies.
Innovation Solution
Incorporating a quantum dot layer with quantum dots of different dimensions on a substrate away from the liquid crystal layer, along with a light guide layer and filter patterns, to enhance light emission and absorption, thereby increasing brightness and maintaining color purity without sacrificing filter thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a thick color filter is used to improve color gamut, then color purity is improved, but out-screen brightness decreases
Solution Approach 1:
The patent changes the material composition and optical parameters of the filter layer by incorporating quantum dots with specific size distributions. This allows the filter to maintain color purity while reducing thickness, thereby improving out-screen brightness without sacrificing color gamut
Solution Approach 2:
The patent uses a composite structure combining quantum dot materials with traditional color filter materials. This composite approach enables the filter layer to achieve both high color purity and sufficient brightness transmission, resolving the contradiction between filter thickness and out-screen brightness
2Illumination intensity
If quantum dots of different dimensions are used to expand color gamut, then color purity is improved, but device structure becomes more complex
Solution Approach 1:
The patent segments the quantum dot layer into multiple sub-layers or regions, each containing quantum dots of specific size ranges. This segmentation approach enables precise color control while simplifying the overall manufacturing process compared to using a single complex quantum dot composition
Solution Approach 2:
The patent applies local quality by positioning specific quantum dot sizes in specific regions of the display panel. Different quantum dot dimensions are strategically placed to optimize color emission in different areas, achieving high color gamut without requiring complex structures throughout the entire panel
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 solution significantly improves out-screen brightness and contrast while maintaining a high color gamut, allowing for a thicker color filter to be used without compromising display quality.
Implementation Method 1
a quantum dot layer located on a side of the second substrate away from the liquid crystal layer, and comprising a plurality of quantum dots of different dimensions
Implementation Method 2
a quantum dot layer located on a side of the second substrate away from the liquid crystal layer, and comprising a plurality of quantum dots of different dimensions
Implementation Method 3
a light guide layer located on a side of the quantum dot layer away from the liquid crystal layer, and configured to guide light into the quantum dot layer
Implementation Method 4
a protective layer located on a side of the quantum dot layer away from the liquid crystal layer, and configured to reduce the blue or ultraviolet light emitted from the liquid crystal display panel
Implementation Method 5
a filter layer located between the quantum dot layer and the liquid crystal layer, wherein the filter layer comprises a first filter pattern, a second filter pattern, and a third filter pattern
Implementation Method 6
a reflective layer located on a side of the liquid crystal layer away from the filter layer
Data Source
AI summary
The present disclosure relates to a liquid crystal display panel, a display device, and a display method. The liquid crystal display panel includes: a first substrate and a second substrate opposed to each other; a liquid crystal layer located between the first substrate and the second substrate; and a quantum dot layer located on a side of the second substrate away from the liquid crystal layer, and including a plurality of quantum dots of different dimensions.