Quantum Dot Display Structure for Color Accuracy and Light Conversion
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Solution Overview
Problem
Existing display apparatuses face challenges in achieving improved display quality, particularly in color accuracy and efficiency of light conversion, which are not adequately addressed by current technologies such as liquid crystal displays and organic light-emitting displays.
Innovation Solution
The display apparatus incorporates a multi-layered structure with quantum dot layers and scattering particles, along with light-transmitting layers and color filter layers, arranged in specific configurations to enhance light conversion efficiency and color reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If quantum dot layers with scattering particles are used to improve light conversion efficiency and color accuracy, then display quality is improved, but device complexity increases due to multi-layered structure
Solution Approach 1:
The patent divides the display structure into multiple functional layers including first and second quantum dot layers, light-transmitting layers, and color filter layers. Each layer performs a specific function in the light conversion process, allowing optimization of color accuracy while maintaining manageable complexity through functional segmentation.
Solution Approach 2:
The patent employs composite quantum dot layers containing both quantum dots and scattering particles. This composite structure enables simultaneous light conversion and isotropic light emission, improving color accuracy and display quality while the scattering particles help distribute light uniformly to reduce the need for additional complex components.
2Use of energy by moving object
If multiple quantum dot layers and light-transmitting layers are arranged in specific configurations to enhance light conversion efficiency, then energy conversion efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent arranges quantum dot layers and light-transmitting layers in alternating stacked configurations across multiple dimensions. This multi-layered vertical arrangement optimizes light conversion efficiency by capturing and converting light at different depths, while the regular alternating pattern provides a manufacturable structure that can be produced using sequential deposition techniques.
Solution Approach 2:
The patent incorporates dummy quantum dot layers and dummy light-transmitting layers in the non-display area during the manufacturing process. These dummy layers are formed simultaneously with the functional layers but serve as placeholders that simplify the manufacturing process by enabling uniform material deposition and processing across the entire substrate, including peripheral areas.
3Measurement precision
If dummy openings and dummy quantum dot layers are added in the non-display area to improve display quality, then color accuracy is improved, but loss of substance increases due to additional materials
Solution Approach 1:
The patent designs the quantum dot layers and light-transmitting layers to serve dual functions: they provide color conversion in the display area while simultaneously acting as dummy structures in the non-display area. This universal design allows the same material layers to fulfill multiple purposes, reducing the need for separate dummy structures and minimizing material consumption.
Solution Approach 2:
The patent merges the functional quantum dot layers with the dummy structures by using the same material composition and formation process for both display and non-display areas. This consolidation eliminates the need for separate manufacturing steps for dummy layers, reducing overall material usage while maintaining color accuracy through the scattering particles present in all layers.
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 proposed structure significantly improves color accuracy and efficiency by isotropically emitting light of desired wavelengths, enhancing the overall display quality.
Implementation Method 1
a first quantum dot layer filling the first opening... each of the first quantum dot layer and the first dummy quantum dot layer includes first quantum dots
Implementation Method 2
each of the first quantum dot layer and the first dummy quantum dot layer includes first quantum dots and first scattering particles... isotropically emitting light of desired wavelengths
Data Source
AI summary
A display apparatus includes a first substrate including a display area and a non-display area surrounding the display area, a second substrate on the first substrate, a bank in which a first opening in the display area and a first dummy opening in the non-display area are defined, a first quantum dot layer filling the first opening, and a first dummy quantum dot layer filling the first dummy opening, where each of the first quantum dot layer and the first dummy quantum dot layer includes first quantum dots and first scatterers.