Metal Partition Layout for Stable Inkjet Color Conversion Displays
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Solution Overview
Problem
Existing display devices face challenges in achieving high resolution while ensuring the stability and reliability of color conversion layers, particularly in the manufacturing process.
Innovation Solution
The implementation of a display device with a partition made of a metal material, which defines specific openings for color conversion layers and transmissive layers, ensuring precise placement and stability during the inkjet process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a partition made of metal material is used to define openings for color conversion layers, then manufacturing precision and stability of color conversion layers are improved, but device complexity increases
Solution Approach 1:
The partition is divided into multiple segments that define separate openings (first opening, second opening, third opening) for different color conversion layers. Each segment of the partition can be independently formed and positioned, allowing precise placement of each color conversion layer while maintaining overall structural organization. This segmentation enables the inkjet process to deposit materials accurately into each designated opening without interference from adjacent layers.
Solution Approach 2:
The partition structure provides different local properties for different openings: the first and second openings are configured to receive color conversion layers with specific material properties, while the third opening is configured to receive a transmissive layer with different properties. The metal material of the partition provides localized thermal conductivity and structural support exactly where needed, enabling precise control over the formation of each layer without requiring the entire structure to have uniform complexity.
2Manufacturing precision
If the partition thickness is reduced to achieve high resolution, then manufacturing precision is improved, but structural strength deteriorates
Solution Approach 1:
The partition is constructed using metal material that provides a favorable strength-to-thickness ratio. This composite approach allows the partition to maintain sufficient structural strength while having reduced thickness, thereby achieving both high resolution display performance and mechanical reliability. The metal material's inherent properties enable thin structures to maintain strength through high elastic modulus and tensile strength characteristics.
3Ease of manufacture
If color conversion layers are formed through inkjet process, then ease of manufacture is improved, but reliability of color conversion layer formation deteriorates
Solution Approach 1:
The partition structure is formed in advance to define the openings and provide structural boundaries before the inkjet deposition of color conversion layers. This preliminary action creates a template that guides the inkjet process, ensuring that materials are deposited only in the intended locations. The pre-formed partition prevents spreading and mixing of inkjet materials, thereby improving the reliability of layer formation while maintaining the ease of the inkjet manufacturing process.
Solution Approach 2:
The partition acts as an intermediary structure between the inkjet deposition process and the final color conversion layer formation. It provides a physical boundary and support structure that mediates the inkjet process, preventing uncontrolled spreading of materials while allowing the inkjet system to maintain its simple, contactless deposition method. This intermediary structure ensures reliable layer formation without requiring complex control mechanisms in the inkjet system itself.
Data Source
AI summary
A display device is disclosed that includes a substrate, a transistor disposed on the substrate, a light emitting element electrically connected to the transistor, an encapsulation layer disposed above the light emitting element, a partition disposed on the encapsulation layer and defining a first opening, a second opening, and a third opening, a first color conversion layer disposed in the first opening, a second color conversion layer disposed in the second opening, and a transmissive layer disposed in the third opening, wherein the partition is made of a metal material, and a distance from a center of a portion of the partition to the first color conversion layer is equal to a distance from the center of the portion of the partition to the transmissive layer.