Liquid Crystal Panel High Wettability Section
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Solution Overview
Problem
Liquid substances can infiltrate liquid crystal panels, disrupting the alignment of liquid crystals and causing display defects due to the low wettability of alignment films and insulating films, which are often made of organic materials, and the expansion and contraction during thermal shock testing.
Innovation Solution
Incorporating a high wettability section with greater wettability than the alignment film, either as a separate component between the alignment film and the sealant or as a section of a layer outside the display area, to absorb liquid substances and prevent them from entering the display area, which can be formed simultaneously with other steps in the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an absorbent layer is provided in an upper layer relative to the alignment film to absorb liquid substances, then alignment performance is maintained, but the manufacturing process becomes more complex with additional steps
Solution Approach 1:
The alignment film and absorbent layer are merged into a single integrated alignment film structure. The alignment film is designed to inherently possess both alignment functionality and liquid absorption capability, eliminating the need for a separate absorbent layer while maintaining alignment performance and simplifying the manufacturing process
Solution Approach 2:
The alignment film is designed to perform multiple functions simultaneously: it provides liquid crystal alignment and acts as an absorbent layer for liquid substances. This multi-functional design eliminates the need for additional components and manufacturing steps while maintaining reliability
2Reliability
If alignment films are made of organic materials with low wettability, then alignment performance is achieved, but liquid substances turn into bubbles that can penetrate into the display area causing display defects
Solution Approach 1:
The wettability parameter of the alignment film is modified to achieve optimal balance. The alignment film is designed with controlled wettability that allows it to absorb liquid substances effectively while maintaining proper liquid crystal alignment, preventing bubble formation and penetration into the display area
Solution Approach 2:
The alignment film utilizes composite material structure combining organic materials with specific surface properties. This composite structure provides both the necessary alignment performance and enhanced wettability for liquid absorption, preventing display defects while maintaining alignment functionality
3Reliability
If additional steps are added to form an absorbent layer separately after forming the alignment film, then liquid absorption capability is improved, but manufacturing complexity and process time increase
Solution Approach 1:
The formation of the alignment film and the absorbent layer is merged into a single manufacturing step. The alignment film is fabricated with inherent liquid absorption capability through material selection and structural design, eliminating the need for separate formation steps and improving manufacturing efficiency
Solution Approach 2:
The liquid absorption capability is built into the alignment film structure during the initial film formation process. By incorporating absorbent properties in advance during alignment film fabrication, the need for subsequent additional steps is eliminated, improving productivity while maintaining liquid absorption capability
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
Effectively prevents liquid substances from penetrating into the display area, reducing display defects and simplifying the manufacturing process by integrating the high wettability section without additional steps.
Implementation Method 1
The high wettability section has wettability greater than wettability of the alignment film
Implementation Method 2
the high wettability section having the wettability greater than the wettability of the alignment film absorbs the liquid substance
Data Source
AI summary
A liquid crystal panel includes a pair of substrates, a liquid crystal layer, and a sealant. The liquid crystal layer is disposed between the substrates. The sealant is disposed at edges of the substrates to seal the liquid crystal layer. At least one of the substrates includes an alignment film and a high wettability section. The alignment film is for aligning liquid crystal molecules in the liquid crystal layer. The high wettability section is in contact with the liquid crystal layer between outer edges of the alignment film and the sealant. The high wettability section has wettability greater than wettability of the alignment film.