OLED Display Panel Color Filter Integration
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Solution Overview
Problem
Conventional OLED display panels require an upper and lower substrate alignment, which hinders thin film encapsulation and results in a thicker, less lightweight device due to the need for a color filter substrate.
Innovation Solution
The OLED display panel integrates a color filter layer on the array substrate, eliminating the need for substrate alignment and enabling thin film encapsulation, with a cathode layer, thin film layers, and a color filter configuration that includes organic and inorganic layers for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a color filter substrate is used in conventional OLED display panels, then RGB three-primary color display is achieved, but the device becomes thicker and heavier due to substrate alignment requirements
Solution Approach 1:
The patent merges the color filter function directly into the array substrate by forming the color filter layer on the cathode layer, eliminating the need for a separate color filter substrate. This integration removes the alignment process between upper and lower substrates, thereby reducing the overall panel thickness while maintaining RGB display capability.
Solution Approach 2:
The patent extracts the color filter function from the separate color filter substrate and relocates it to the array substrate side. By taking out the color filter layer from its traditional position on the color filter substrate and placing it directly on the cathode layer, the design eliminates the need for substrate alignment and bonding, achieving thinness without sacrificing color display performance.
2Reliability
If substrate alignment and bonding are performed, then color filter functionality is achieved, but the manufacturing process becomes complex and the device cannot achieve lightweight and thin characteristics
Solution Approach 1:
The patent combines the color filter layer formation process with the array substrate manufacturing process. By forming the color filter layer directly on the cathode layer of the array substrate, the design eliminates the separate substrate alignment and bonding steps, simplifying the manufacturing process while ensuring color filter functionality.
3Reliability
If a separate color filter substrate is used, then color filtering is achieved, but thin film encapsulation cannot be properly implemented
Solution Approach 1:
The patent merges the color filter layer into the array substrate structure, positioning it on the cathode layer. This integration creates a unified substrate structure that enables proper thin film encapsulation, as there are no alignment or bonding interfaces between separate substrates that would interfere with the encapsulation process.
Data Source
AI summary
The utility model provides an OLED display panel, by disposing a color filter layer on an array substrate, an alignment process of an upper with a lower substrate can be omitted, the manufacturing process of the OLED display panel can be simplified, and a thin film packaging can be carried out on the color filter layer so that the OLED display panel can become more lightweight and thin.