Micro Transfer Print Organic Functional Layer Manufacturing
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Solution Overview
Problem
The existing manufacturing processes for liquid crystal display (LCD) post spacers are cumbersome, leading to high material consumption and longer production cycles, especially in large-size and high-resolution displays, where multiple levels of buffering are required to prevent brightness unevenness and structural defects.
Innovation Solution
A method using micro transfer print technology to form patterned organic functional layers, where a transfer head with protrusions is used to adhere and pattern organic material layers onto a receiving substrate, reducing material consumption and simplifying the production process by forming main and subsidiary post spacers with precise height differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mask photolithography process is used to form post spacers, then pattern precision can be achieved, but manufacturing complexity and production cycle time increase significantly
Solution Approach 1:
The patent introduces a transfer head as an intermediary tool that carries pre-formed spacer patterns and transfers them to the substrate. This mediator simplifies the manufacturing process by replacing complex mask photolithography steps with a direct transfer mechanism, reducing process complexity while maintaining pattern precision
Solution Approach 2:
The spacer patterns are pre-formed on the transfer head before the actual manufacturing process. This preliminary action allows the patterns to be prepared in advance and transferred directly to the substrate, eliminating the need for complex in-line photolithography steps and reducing production cycle time
2Reliability
If multiple types of post spacers (main and subsidiary) are used to prevent brightness unevenness, then display quality improves, but material consumption and process complexity increase
Solution Approach 1:
The patent combines multiple types of post spacers (main and subsidiary spacers with different heights) into a single integrated pattern transfer process. By forming both spacer types from the same organic material layer using the transfer head, the process reduces material consumption compared to forming them separately, while maintaining the display quality benefits of having multiple spacer levels
Solution Approach 2:
The transfer head enables different regions of the substrate to receive different spacer heights (main spacers in some areas, subsidiary spacers in others) based on the local pattern requirements. This local differentiation maintains display quality by preventing brightness unevenness in specific areas while optimizing material usage overall
3Reliability
If conventional multi-step process is used for forming post spacers, then spacer functionality is achieved, but production cycle time increases
Solution Approach 1:
The spacer patterns are pre-formed on the transfer head in advance, allowing the actual manufacturing process to skip multiple intermediate steps including mask alignment, photolithography exposure, and development. This preliminary preparation significantly reduces production cycle time while ensuring spacer functionality is maintained through precise pattern transfer
Solution Approach 2:
The patent skips the traditional mask photolithography steps by directly transferring pre-formed patterns from the transfer head to the substrate. This skipping of intermediate steps rushes through the manufacturing process more efficiently, reducing production cycle time while maintaining the required spacer functionality
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 approach effectively reduces material consumption and shortens the production cycle by enabling the formation of patterned organic functional layers with precise spacer arrangements, improving display quality and efficiency in LCD manufacturing.
Implementation Method 1
a side of the transfer head which is disposed with the transfer protrusions are pasted on the organic material layer
Data Source
AI summary
The present invention provides a method for manufacturing an organic functional layer in a display panel by adhering an organic material pattern corresponding to the transfer protrusions from an organic material layer by using the transfer protrusion on a transfer head, then, the organic material pattern which is adhered by the transfer head is disposed on a receiving substrate, so as to form a patterned organic functional layer on the receiving substrate. The present invention provides a patterned organic functional layer in a display panel by a micro transfer print technology, which is capable of effectively reducing the material consumption of the organic functional layer and the production method is simple, which is capable of effectively reducing the online production cycle.