Light-Sensitive Alignment Film for Multi-Dimensional LCD Orientation
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Solution Overview
Problem
Current multi-dimensional thin film transistor liquid crystal display devices have a complicated manufacturing process and high costs due to the need for complex electrode construction, making them difficult to manufacture.
Innovation Solution
A method for preparing a light-sensitive alignment film using 4-nitrobenzyl bromide, triphenylphosphine, p-nitrobenzaldehyde, and 9,9′-bianthracyl tetracarboxylic dianhydride, which is then oriented using linearly polarized ultraviolet light to achieve multi-dimensional orientations, eliminating the need for multi-dimensional electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-dimensional electrodes are constructed using film etching technique, then multi-dimensional liquid crystal orientations are achieved, but manufacturing process becomes complicated and cost increases
Solution Approach 1:
The patent replaces the mechanical film etching process with a photochemical alignment film patterning process. The alignment film is prepared with different rubbing directions in different regions, and multi-dimensional orientations are achieved through optical illumination and photochemical reactions rather than mechanical electrode etching, thereby simplifying the manufacturing process
Solution Approach 2:
The patent changes the rubbing direction parameter of the alignment film in different regions to achieve multi-dimensional orientations. By controlling the rubbing direction and using photochemical reactions with polarized light, the liquid crystal molecules are oriented in different dimensions without requiring complex multi-dimensional electrode structures
2Adaptability or versatility
If multi-dimensional electrodes are constructed using film etching technique, then multi-dimensional liquid crystal orientations are achieved, but manufacturing cost increases
Solution Approach 1:
The patent replaces the costly mechanical film etching process with a photochemical alignment film patterning process. The alignment film is prepared with different rubbing directions in different regions, and multi-dimensional orientations are achieved through optical illumination and photochemical reactions rather than mechanical electrode etching, thereby reducing manufacturing costs
Solution Approach 2:
The patent uses a mask plate to define the pattern regions on the alignment film. The mask plate serves as a template that is copied onto the alignment film through photochemical reactions, allowing efficient and low-cost replication of multi-dimensional orientation patterns without requiring complex electrode fabrication
3Stability of the object's composition
If rubbing process is used to form troughs in alignment film, then uniform orientation of liquid crystal molecules is achieved, but additional manufacturing steps are required
Solution Approach 1:
The patent combines the alignment film preparation and orientation control into a single integrated process. The alignment film is prepared with specific rubbing directions, and the desired orientations are achieved through photochemical reactions with polarized light during the same manufacturing step, eliminating the need for separate additional orientation control steps
Solution Approach 2:
The patent performs preliminary rubbing of the alignment film to create initial troughs and orientation patterns before the final device assembly. This preliminary action prepares the alignment film with predetermined orientation characteristics that are then activated and refined through photochemical reactions, reducing the need for subsequent manufacturing steps
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 simplifies the manufacturing process, reduces costs, and achieves multi-dimensional liquid crystal orientations, improving visual angles and contrast by allowing the alignment film to generate different orientations under varying ultraviolet light dosages, thereby eliminating the need for complex electrode construction.
Implementation Method 1
illuminating the alignment film with linearly polarized ultraviolet light at different dosages so that the alignment film is made to orient along the directions according to the corresponding dosages
Data Source
AI summary
A method for preparing an alignment film (6), a method for performing alignment of the alignment film (6), as well as a multi-dimensional liquid crystal display device manufacture using the alignment film (6). The alignment film (6) generated by the preparation method is a light sensitive alignment film (6), which can generate directions of orientation perpendicular or parallel to the polarization direction under different dosages of linearly polarized ultraviolet light (10). By adjusting the polarization direction or dosage of the linearly polarized ultraviolet light (10), multi-dimensional orientations of the alignment film (6) is achieved. Manufacture of a multi-dimensional liquid crystal display device using a substrate (1) having the alignment film (6) with multi-dimensional orientations avoids the manufacture of the multi-dimensional electrode, and reduces costs and difficulty of process.