Micro-LED Display Panel With Quantum Dot White-Light Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display technologies face challenges in scaling down light emitting diodes (LEDs) to micro-size while maintaining reliability and enabling mass production, particularly in integrating high pixel density for enhanced brightness and performance.
Innovation Solution
A display panel design featuring a micro-LED element with a light control layer composed of quantum dots and a color filter layer, integrated on a silicon substrate using a CMOS process, which converts blue light into white light, allowing for compact pixel areas and improved reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light emitting diodes are scaled down to micro-size, then pixel density and brightness are improved, but manufacturing reliability and mass production capability deteriorate
Solution Approach 1:
The patent divides the display panel into distinct functional layers: a base substrate layer, a light emitting element layer (micro-LEDs), a light control layer (quantum dots), and a color filter layer. This segmentation allows each layer to be optimized and manufactured separately, improving overall manufacturing reliability while maintaining micro-size pixel density for high brightness.
Solution Approach 2:
The patent employs composite material structures, specifically combining micro-LEDs with quantum dot light control layers and color filter materials. This composite approach enables the integration of multiple functions (light emission, wavelength conversion, and color filtering) in a compact structure, achieving high pixel density and brightness while maintaining manufacturing feasibility through established CMOS processes.
2Quantity of substance
If light emitting diodes are scaled down to micro-size, then pixel density is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple optical functions into a unified layered structure: the base substrate provides mechanical support, the micro-LED layer handles light emission, the quantum dot layer performs wavelength conversion, and the color filter layer enables color separation. This merging of functions into a compact vertical stack achieves high pixel density without proportionally increasing horizontal device complexity.
Solution Approach 2:
The patent transitions from planar pixel arrangements to a vertical layered architecture, stacking functional components in the thickness direction. This dimensional change allows high pixel density to be achieved through vertical integration rather than horizontal expansion, reducing the footprint and overall device complexity while maintaining high pixel counts.
3Use of energy by moving object
If quantum dots are used in the light control layer, then light conversion efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes parameter changes in the quantum dot layer, specifically controlling the size and composition of quantum dots to achieve desired emission wavelengths. By adjusting quantum dot parameters (size, material composition) rather than their precise spatial positions, the patent maintains high light conversion efficiency while reducing manufacturing precision requirements compared to methods requiring exact positional placement.
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 enables the creation of small-sized display panels with increased reliability and mass production capabilities, achieving efficient light conversion and reduced color mixing, thereby enhancing brightness and performance.
Implementation Method 1
a light emitting element on the base substrate to generate a first light, the light emitting element overlapping the pixel area
Implementation Method 2
a light control layer on the light emitting element to convert the first light into a white light; the first luminous substance and the second luminous substance may be quantum dots
Implementation Method 3
a color filter layer on the light control layer, the color filter layer including a first color filter that allows penetration of the first light, a second color filter that allows penetration of a second light different from the first light, and a third color filter that allows penetration of a third light different from the first light and the second light
Data Source
AI summary
Disclosed are display panels and methods of fabricating the same. The display panel includes a base substrate having a pixel area and a peripheral area adjacent to the pixel area, a light emitting element on the base substrate to generate a first light and overlapping the pixel area, a light control layer on the light emitting element to convert the first light into a white light, and a color filter layer on the light control layer and includes a first color filter that allows penetration of the first light, a second color filter that allows penetration of a second light different from the first light, and a third color filter that allows penetration of a third light different from the first light and the second light.