Color Conversion Substrate Symmetrical Partition Layer
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Solution Overview
Problem
Current OLED display devices face challenges in achieving uniform color reproduction and display quality due to variations in the volume and height of wavelength conversion patterns and light transmission patterns, which can lead to color distortion and reduced lateral visibility.
Innovation Solution
A color conversion substrate with a symmetrical partition layer structure, including a first and second partition layer, is introduced, where the first partition layer forms a flat lower surface on the color filters and the second partition layer is disposed on top, ensuring uniform volume and height of wavelength conversion patterns and light transmission patterns across neighboring regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single partition layer is used between color filters, then the structure is simple, but the volume and height of wavelength conversion patterns vary across regions leading to color distortion
Solution Approach 1:
The partition layer is divided into multiple segments (first partition layer and second partition layer) with different functions. The first partition layer provides baseline separation between color filters, while the second partition layer adds height control and flatness adjustment. This segmentation allows each layer to optimize for its specific function rather than requiring a single complex layer to handle all requirements.
Solution Approach 2:
The solution moves from a single-layer partition structure to a multi-layer stacked structure, adding the vertical dimension of layer stacking. This dimensional change enables independent control of partition height and flatness characteristics, allowing the second partition layer to compensate for variations in the first layer and achieve uniform wavelength conversion pattern dimensions across different regions.
2Ease of manufacture
If wavelength conversion patterns have non-uniform volume and height, then the manufacturing process is simpler, but color reproduction quality deteriorates
Solution Approach 1:
The first partition layer is formed first to establish the basic partition structure and provide a reference plane. Then the second partition layer is added to pre-adjust the flatness and height before the wavelength conversion patterns are formed. This preliminary action of creating a controlled foundation structure ensures that subsequent pattern formation occurs on a uniform surface, guaranteeing consistent pattern dimensions and color quality.
Solution Approach 2:
The second partition layer acts as an intermediary between the first partition layer and the wavelength conversion patterns. It mediates the interface by providing an additional flat surface that compensates for irregularities from below, ensuring that the wavelength conversion patterns receive uniform support across all regions regardless of variations in the lower 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
This configuration enhances color reproducibility and display quality by maintaining uniform light emission across different regions, reducing color distortion and improving lateral visibility.
Implementation Method 1
the first partition layer may form a flat lower surface
Implementation Method 2
a first wavelength conversion pattern disposed on the first color filter and a second wavelength conversion pattern disposed on the second color filter
Data Source
AI summary
A color conversion substrate and a display device are provided. The color conversion substrate includes a base substrate, a first color filter and a second color filter disposed on a surface of the base substrate, a first partition layer disposed between the first color filter and the second color filter, a second partition layer disposed on the first partition layer, a first wavelength conversion pattern disposed on the first color filter and a second wavelength conversion pattern disposed on the second color filter, wherein the first partition layer includes a first lower surface disposed on the first color filter and a second lower surface disposed on the second color filter.