Quantum Material Layer for OLED Light Utilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Organic light emitting display panels suffer from low light utilization and high power consumption due to inefficient light emission from the organic light emitting layer, particularly when only a part of the emitted light passes through the color filter layer.
Innovation Solution
Incorporating a quantum material layer on the color filter substrate or array substrate to convert light emitted by the organic light emitting unit into colors matching the sub-pixels, enhancing light utilization and reducing power consumption by leveraging quantum size effects for photoluminescence properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional organic light emitting layer is used without quantum material layer, then the device structure is simpler, but the light utilization rate is low and power consumption is high
Solution Approach 1:
The patent introduces a quantum material layer as an intermediary component between the organic light emitting layer and the color filter layer. This quantum material layer acts as a wavelength converter that transforms high-energy blue or UV light from the organic emitter into lower-energy visible light wavelengths, enabling better spectral matching with the color filter and improving overall light utilization efficiency while reducing power consumption
Solution Approach 2:
The patent utilizes the quantum confinement effect to change the optical parameters of the system. By controlling the size and composition of quantum dots or quantum rods in the quantum material layer, the emission wavelength can be precisely tuned to match the transmission characteristics of the color filter layer, thereby optimizing light utilization and reducing energy waste
2Use of energy by moving object
If only a part of light emitted from the organic light emitting layer passes through the color filter layer, then the device structure is conventional, but the light utilization rate is low
Solution Approach 1:
The quantum material layer serves as an optical intermediary that pre-conditions the light spectrum before it reaches the color filter layer. By converting the emission spectrum of the organic light emitting layer to better match the transmission window of the color filter, a higher proportion of emitted light can pass through, improving light utilization rate
Solution Approach 2:
The patent employs composite quantum material structures, such as quantum dots embedded in a matrix material or core-shell quantum rod structures. These composite materials provide both the quantum confinement effect for wavelength conversion and the necessary structural stability, enabling efficient light utilization while maintaining manufacturability through established deposition techniques
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 quantum material layer increases light utilization and brightness while reducing power consumption by converting light emitted from the organic light emitting unit into colors matching the sub-pixels, thereby improving the overall efficiency of the display panel.
Implementation Method 1
the quantum material layer can exhibit size effect to convert a part of light emitted thereinto from the organic light emitting unit to light of a same color as that of a corresponding sub-pixel
Data Source
AI summary
The invention provides an organic light emitting display panel and a manufacturing method thereof, and a display device. In the organic light emitting display panel and the manufacturing method thereof, and the display device of the invention, since a quantum material layer exhibiting quantum size effects is arranged on a side of a color filter substrate close to an array substrate or on a side of an array substrate close to a color filter substrate, and can convert a part of light emitted thereinto from the organic light emitting unit into light with a same color as that of a corresponding sub-pixel, the utilization rate of light emitted from the organic light emitting unit is increased, brightness is improved, and power consumption is reduced.