Liquid Crystal Additive Eliminates Alignment Films
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Solution Overview
Problem
The manufacturing process of liquid crystal panels is hindered by high costs and inefficiencies due to the need for alignment films, which are prone to damage from static electricity and impurities, and result in the MURA phenomenon caused by interactions between liquid crystal molecules and reactive monomers.
Innovation Solution
A liquid crystal additive with a benzene ring or cyclohexyl structure is introduced, allowing for the omission of the alignment film formation process and inclusion in a liquid crystal composition with existing liquid crystal molecules and reactive monomers, using one-drop filling technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If alignment films are formed on substrates during manufacturing, then liquid crystal molecules can be controlled to achieve proper display performance, but static electricity and impurities on coating brushes cause damages to liquid crystal panels and manufacturing costs increase
Solution Approach 1:
The patent removes the alignment film layer from the liquid crystal panel structure entirely. Instead of forming alignment films on substrates, the invention uses a liquid crystal composition containing specific reactive monomers that can form alignment structures in-situ during the liquid crystal layer formation process, thereby eliminating the harmful coating brush contact and static electricity issues associated with traditional alignment film manufacturing
Solution Approach 2:
The patent introduces reactive monomers as intermediary substances in the liquid crystal composition. These monomers serve as mediators that can react to form alignment structures without requiring separate alignment film coating processes. The monomers interact with liquid crystal molecules to create the necessary alignment effects while avoiding the harmful factors of traditional coating methods
2Manufacturing precision
If alignment films are formed using coating processes, then liquid crystal molecule arrangement can be controlled, but special devices and time are required increasing manufacturing costs
Solution Approach 1:
The patent merges the alignment film formation process with the liquid crystal layer deposition process. By incorporating reactive monomers directly into the liquid crystal composition, the alignment structures form simultaneously with the liquid crystal layer itself, eliminating the need for separate alignment film coating steps and reducing manufacturing complexity
Solution Approach 2:
The liquid crystal composition itself provides the alignment function through the reactive monomers within the composition. The system becomes self-sufficient, where the liquid crystal layer formation process automatically creates the necessary alignment structures without requiring external alignment film coating equipment or additional processing steps
3Adaptability or versatility
If conventional liquid crystal compositions are used, then basic display function is achieved, but MURA phenomenon occurs due to different effects of liquid crystal molecules and reactive monomers on alignment films
Solution Approach 1:
The patent modifies the chemical composition parameters of the liquid crystal system by introducing specific reactive monomers with defined molecular structures and reaction characteristics. These parameter changes in the composition allow the reactive monomers to interact controllably with liquid crystal molecules, eliminating the MURA phenomenon while maintaining display 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 reduces manufacturing costs and time while preventing the MURA phenomenon, enhancing the uniformity of liquid crystal panels by eliminating the need for alignment films.
Implementation Method 1
a liquid crystal additive having a higher clear point, so that process of forming alignment films can be omitted
Implementation Method 2
the two substrates are laminated in vacuum followed by UV curing process
Data Source
AI summary
The present invention provides a liquid crystal additive, a liquid crystal composition and a liquid crystal panel thereof. The liquid crystal additive of the present invention has a higher clear point, so that adding the liquid crystal additive into a liquid crystal composition of a liquid crystal panel can omit the process of forming alignment films to reduce manufacturing costs and time of liquid crystal panels; meanwhile, the MURA phenomenon due to the different effects of liquid crystal molecules and liquid crystal reactive monomers on alignment films is avoided, so as to improve the uniformity of liquid crystal panel.