Liquid Crystal Display Gas Discharge Passage Film Stability
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Solution Overview
Problem
Current liquid crystal display devices face challenges in manufacturing yield and production efficiency due to issues with inorganic insulating films floating or peeling off from organic color filters, affecting display quality and yield.
Innovation Solution
The liquid crystal display device structure includes a first substrate with a color filter formed on an organic insulating film, inorganic insulating layers, and second electrodes, with a gas discharge passage to prevent inorganic layers from floating or peeling, and a specific alignment film contact to maintain electrical insulation and prevent capacity variations in sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic insulating films are used in liquid crystal display devices, then electrical insulation is achieved, but the films may float or peel off from organic color filters during manufacturing, reducing manufacturing yield and display quality
Solution Approach 1:
The patent introduces a gas discharge passage as an intermediary structure between the inorganic insulating film and the organic color filter. This passage allows controlled gas discharge to prevent the inorganic film from floating or peeling off during manufacturing, while maintaining electrical insulation properties. The gas discharge passage acts as a mediator that resolves the conflict between film stability and insulation performance.
Solution Approach 2:
The patent modifies the manufacturing parameters by introducing gas discharge control during the fabrication process. By adjusting gas discharge parameters (such as gas flow rate, discharge timing, and pressure), the patent prevents film floating and peeling without compromising electrical insulation. This parameter change approach allows optimization of both film attachment and insulation properties.
2Productivity
If gas discharge passages are introduced to prevent film floating, then manufacturing yield improves, but device structure becomes more complex
Solution Approach 1:
The patent segments the gas discharge function into multiple controlled passages distributed across the device structure. Rather than requiring a single complex gas discharge system, the structure is divided into multiple discrete gas discharge passages that can be independently controlled. This segmentation simplifies the overall control mechanism while maintaining high manufacturing yield.
Solution Approach 2:
The gas discharge passage serves multiple functions: it prevents film floating, controls manufacturing processes, and maintains electrical insulation. By making this single structure multi-functional, the patent avoids adding separate components for each function, thereby reducing overall device complexity while improving manufacturing yield.
3Reliability
If alignment film contacts organic insulating film and second electrode, then electrical insulation and capacity consistency are maintained, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-positioning the alignment film in contact with the organic insulating film and second electrode during the manufacturing process. This preliminary positioning ensures that electrical insulation and capacity consistency are maintained from the outset. By establishing correct alignment early in the manufacturing sequence, the patent reduces the need for subsequent precision adjustments.
Solution Approach 2:
The alignment film structure is designed to self-align and maintain contact with the organic insulating film and second electrode through its own geometric configuration. This self-service mechanism reduces the dependency on external precision alignment tools or processes, thereby maintaining electrical insulation properties without requiring excessive manufacturing precision.
Data Source
AI summary
According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes an organic insulating film, a first electrode formed on the organic insulating film, an inorganic insulating film formed on the first electrode, a second electrode formed on the inorganic insulating film, and an alignment film. The alignment film is in contact with the organic insulating film and the second electrode.