Siloxane Photoaligning Materials for LCD Optical Quality
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Solution Overview
Problem
Current photo-aligning materials for liquid crystals lack superior optical qualities necessary for advanced electro-optical applications, particularly in liquid crystal displays (LCDs), and there is a need for more efficient and cost-effective manufacturing processes.
Innovation Solution
Development of siloxane oligomers, polymers, or copolymers with specific monomers that provide improved optical properties for planar and vertical alignment of liquid crystals, along with a process for their production that enables economic and low-energy consumption LCD manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If new siloxane-based photoaligning materials are developed to improve optical qualities, then optical properties are enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent modifies the chemical structure parameters of photoaligning materials by incorporating specific siloxane backbone structures with controlled oligomerization degrees (n=1-10) and substituent groups. This parameter optimization enables improved optical anisotropy and alignment properties while maintaining compatibility with existing LCD manufacturing processes, thus enhancing reliability without proportionally increasing manufacturing complexity
Solution Approach 2:
The invention creates composite photoaligning materials by combining siloxane backbone structures with various functional groups (acrylate, methacrylate, vinyl) and substituent groups. These composite molecular structures achieve superior optical properties through synergistic effects of different structural components, while the modular design approach allows for systematic optimization without overwhelming manufacturing complexity
2Ease of manufacture
If conventional photoaligning materials are used, then manufacturing process is simpler, but optical properties are insufficient for advanced applications
Solution Approach 1:
The patent optimizes key parameters including oligomerization degree (n=1-10), molecular weight distribution, and substituent group composition to achieve the desired balance. By controlling these parameters within specific ranges, the materials maintain ease of manufacture through standard polymerization processes while achieving the enhanced optical properties required for advanced LCD applications
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
The new siloxane-based materials enhance optical qualities in LCDs, facilitating the production of efficient and cost-effective liquid crystal displays with improved technical properties.
Implementation Method 1
photoaligning materials for liquid crystals, namely for the planar orientation of liquid crystals or for the vertical alignment of liquid crystals
Data Source
AI summary
The present invention relates to siloxane polymer, copolymer or oligomer for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, and which derives from at least one monomer of formula (I), to compositions thereof, to a process for the preparation of the linear, branched or crosslinked siloxane polymer, and to its use for optical and electro optical devices, such as liquid crystal devices (LCDs):