Viewing Angle Control Unit Grooves Mitigate Alignment Film Spreading
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Solution Overview
Problem
The excessive spreading of alignment film material during the production of viewing angle control units for display screens leads to poor adherence and conduction issues, affecting the functionality and privacy protection of mobile computing devices.
Innovation Solution
Incorporating grooves in the transparent electrode layer along the seal component of the substrate assemblies to resist the spreading of the alignment film material, preventing it from reaching undesired areas and ensuring proper adhesion and conduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the alignment film material is discharged onto the transparent electrode layer to form a uniform alignment film, then the alignment film coverage is improved, but the alignment film material spreads excessively to undesired areas such as the sealing region and conductive terminal
Solution Approach 1:
The transparent electrode layer is segmented by introducing grooves that divide the continuous layer into separated regions. These grooves act as physical barriers that segment the spreading path of the alignment film material, confining it to the desired electrode area and preventing it from reaching the sealing region and conductive terminal.
Solution Approach 2:
The grooves introduced into the transparent electrode layer serve as an intermediary structure between the alignment film material and the sealing region/conductive terminal. This intermediary feature acts as a barrier that mediates the interaction by blocking the direct contact and spreading of the alignment film material to undesired areas.
2Manufacturing precision
If the alignment film material reaches the sealing region, then the alignment film coverage is increased, but the adherence between the seal component and the substrate assembly deteriorates
Solution Approach 1:
The grooves in the transparent electrode layer segment the alignment film material's spreading path, creating a physical barrier that prevents the material from reaching the sealing region. This segmentation ensures that the sealing region remains free of alignment film material, thereby maintaining proper adherence between the seal component and the substrate assembly.
Solution Approach 2:
The grooves act as an intermediary barrier between the alignment film material and the sealing region. This intermediary structure blocks the harmful interaction by preventing the alignment film material from contacting the sealing region, thus preserving the adherence properties of the seal component.
3Manufacturing precision
If the alignment film material reaches the conductive terminal, then the alignment film coverage is increased, but the conduction between the conductive terminal and other elements deteriorates
Solution Approach 1:
The grooves in the transparent electrode layer segment the spreading path of the alignment film material, creating isolated regions that confine the material to the electrode area. This segmentation prevents the alignment film material from reaching the conductive terminal, thereby maintaining proper conduction between the conductive terminal and other elements.
Solution Approach 2:
The grooves serve as an intermediary barrier between the alignment film material and the conductive terminal. This intermediary structure blocks the direct contact between the alignment film material and the conductive terminal, preserving the electrical conduction properties of the terminal.
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 grooves effectively mitigate the spreading of the alignment film material, enhancing the adherence between the seal component and substrates and maintaining proper conduction, thereby improving the functionality and privacy protection of the viewing angle control units.
Implementation Method 1
the grooves that extend along at least part of the seal component are used to mitigate the spreading of an alignment film material
Data Source
AI summary
Disclosed herein are a viewing angle control unit, a substrate assembly of the viewing angle control unit, and a display assembly. The viewing angle control unit includes two substrate assemblies, a liquid crystal (LC) component disposed between the substrate assemblies, and a seal component interconnecting the substrate assemblies and surrounding the LC component. At least one of the substrate assemblies includes a transparent base substrate, a transparent electrode layer disposed on the transparent base substrate, and an alignment film disposed on the transparent electrode layer. The transparent electrode layer has a groove extending along at least part of the seal component, so as to mitigate excessive spreading of a material of the alignment film during manufacturing of the viewing angle control unit. The display assembly includes the viewing angle control unit.