OLED Panel Reflecting Wall for Light Extraction and Color Isolation
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Solution Overview
Problem
Existing OLED panels face challenges in improving light emission rate, reducing power consumption, and eliminating light mixing from adjacent emitting regions, which limits their performance and service life.
Innovation Solution
Incorporating a reflecting wall between adjacent light-emitting regions within the pixel defining layer of the OLED panel to enhance light reflection and reduce cross-talk between colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a reflecting layer is added below each light-emitting region or surface roughness is increased below the light-emitting region to improve light emission rate, then light emission rate is improved limitedly, but power consumption cannot be reduced and service life cannot be prolonged, and mixing phenomenon from adjacent light-emitting regions cannot be eliminated
Solution Approach 1:
The invention divides the pixel defining layer into multiple segments by introducing reflecting walls that partition the light-emitting regions. These reflecting walls segment the pixel defining layer into multiple sub-regions, effectively isolating adjacent light-emitting regions and preventing light mixing while maintaining the light extraction function.
Solution Approach 2:
The invention applies different structural qualities to different locations: the pixel defining layer has different thicknesses at different positions (thinner at edges, thicker in center), and reflecting walls are strategically positioned at specific locations within the pixel defining layer to reflect light back into the light-emitting region, creating localized light management zones.
2Illumination intensity
If a reflecting layer is added below each light-emitting region to improve light emission rate, then light emission rate is improved limitedly, but power consumption cannot be reduced
Solution Approach 1:
The pixel defining layer is segmented into multiple regions by reflecting walls, creating distinct light management zones. This segmentation allows for more efficient light extraction and distribution, improving overall light emission rate and reducing the energy required to achieve the same brightness level.
Solution Approach 2:
The pixel defining layer is designed with spatially varying thickness and strategic reflecting wall placement to optimize light extraction efficiency at different locations. This local optimization improves overall light emission efficiency, thereby reducing power consumption for a given brightness level.
3Illumination intensity
If a reflecting layer is added below each light-emitting region to improve light emission rate, then light emission rate is improved limitedly, but service life cannot be prolonged
Solution Approach 1:
The pixel defining layer is divided into multiple segments by reflecting walls, which improve light extraction efficiency. This segmentation reduces the energy burden on individual light-emitting regions, decreasing thermal stress and degradation, thereby extending the overall service life of the OLED panel.
Solution Approach 2:
The optimized local structure with varying pixel defining layer thickness and strategically positioned reflecting walls improves light extraction efficiency at each location, reducing the energy required for operation and minimizing thermal degradation, which extends service life.
4Illumination intensity
If a reflecting layer is added below each light-emitting region to improve light emission rate, then light emission rate is improved limitedly, but mixing phenomenon from adjacent light-emitting regions cannot be eliminated
Solution Approach 1:
The pixel defining layer is segmented into multiple regions by reflecting walls, which are positioned at specific locations to effectively separate adjacent light-emitting regions. This segmentation approach provides clear geometric definitions that facilitate precise manufacturing while achieving the desired light isolation effect.
Solution Approach 2:
The reflecting walls are positioned at specific local positions within the pixel defining layer, creating localized light management zones. This localized approach provides clear manufacturing targets and geometric references, making it easier to achieve the required positioning precision during fabrication.
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 solution increases light emission rate, reduces power consumption, and prolongs the service life of OLED devices by effectively reflecting light back into the intended region, minimizing color mixing from adjacent emitting areas.
Implementation Method 1
the present disclosure can increase light emission rate by adding the reflecting wall between two adjacent light-emitting regions within the pixel defining layer
Data Source
AI summary
The present disclosure provides an OLED panel and a manufacturing method thereof and OLED display. The OLED panel includes a reflecting wall located between two adjacent light-emitting regions and within a pixel defining layer. Therefore, the present disclosure can improve light emission rate, reduce power consumption and prolong service life of device, and eliminate mixing phenomenon caused by mixing different color light emitted from adjacent light-emitting regions.