Photoaligning Compound for Low-Energy LCDs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a growing demand for green technology in the display industry to reduce power consumption and production time, while maintaining high energy efficiency in large size, high definition televisions.
Innovation Solution
A new photoaligning compound of formula (I) is developed, which is used to create a photoaligning composition. This composition is employed as an orienting layer for liquid crystals and in the construction of optical elements and multi-layer systems, particularly in liquid crystal displays (LCDs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional photoaligning materials are used, then the required technical properties are maintained, but energy consumption increases and production time increases
Solution Approach 1:
The patent modifies the molecular structure of photoaligning materials by changing chemical parameters - specifically incorporating fluorinated aromatic diamine groups and adjusting the side chain composition (m1, m2, m3 molar fractions). These parameter changes enable the material to achieve the required alignment properties with lower energy consumption and shorter production time while maintaining technical reliability.
Solution Approach 2:
The invention uses composite material design by combining multiple functional groups within the photoaligning compound structure - including fluorinated aromatic diamine groups (M1, M2, M3), carboxylic acid groups (D1, D2, D3), and various side chain configurations. This composite molecular structure allows optimization of both energy efficiency and technical performance simultaneously.
2Loss of time
If conventional photoaligning materials are used, then technical properties are maintained, but production time increases
Solution Approach 1:
The patent optimizes production time by modifying molecular parameters - specifically using fluorinated aromatic diamine groups that enable faster alignment processes. The adjusted molar fractions (m1, m2, m3) of different comonomers are optimized to achieve rapid photoalignment while maintaining the required technical properties, thereby reducing production time without compromising reliability.
3Use of energy by moving object
If backlight intensity is decreased to reduce energy consumption, then energy efficiency improves, but image quality may deteriorate
Solution Approach 1:
The patent changes the optical parameters of the photoaligning material by incorporating fluorinated aromatic groups and optimizing the side chain structure. These modifications enable the material to maintain high alignment quality at lower backlight intensities, allowing energy efficiency improvement without significant loss of image quality. The fluorine atoms contribute to enhanced optical properties that preserve visibility and contrast at reduced illumination levels.
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 photoaligning material enables the production of low energy consuming LCDs with economic manufacturing processes, maintaining the required technical properties without decreasing the intensity needed by the backlight.
Implementation Method 1
a photoaligning compound of formula (I)... a photoaligning composition, obtained by this process
Data Source
AI summary
The present invention relates to a photoaligning compound of formula (I), to a process for the preparation of this compound, to a photoaligning composition, obtained by this process, to the use of said compositions as orienting layer for liquid crystals and in the construction of unstructured and structured optical elements and multi-layer systems, especially liquid crystal displays.