Display Sealing Material Application for Bubble Prevention
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Solution Overview
Problem
Conventional liquid crystal displays often experience bubble formation due to improper sealing, which degrades the display quality by allowing air to infiltrate the liquid crystal layer, leading to visible defects.
Innovation Solution
A method of manufacturing a display apparatus involves using a first and second sealing material, where the second sealing material is applied along imaginary lines with specific start and end points to prevent bubble formation by ensuring uniform coating and maintaining the width of the main sealing material, thereby sealing the liquid crystal layer effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sealing material is applied without precise control, then application speed is improved, but bubble formation increases and display quality deteriorates
Solution Approach 1:
The system incorporates a feedback mechanism where the actual dispensing amount is measured and compared with the target amount, and the dispensing parameters are adjusted in real-time based on the deviation detected, ensuring consistent sealing quality
Solution Approach 2:
The patent replaces traditional mechanical dispensing control with a system that uses sensors to detect dispensing amount and a controller to adjust parameters, substituting pure mechanical control with an automated control system
2Adaptability or versatility
If sealing material amount varies, then application flexibility is improved, but sealing reliability deteriorates due to air infiltration
Solution Approach 1:
The system measures the actual sealing material amount dispensed and feeds this information back to the controller, which adjusts subsequent dispensing parameters to maintain consistent sealing quality across different application conditions
Solution Approach 2:
The system dynamically changes dispensing parameters such as flow rate, pressure, and duration based on feedback information to maintain optimal sealing material amount under varying application conditions
3Device complexity
If manual sealing material application is used, then process simplicity is improved, but manufacturing precision deteriorates due to human error
Solution Approach 1:
The system performs self-measurement of the dispensing amount and self-adjustment of parameters without requiring external intervention, achieving automated quality control
Solution Approach 2:
The patent replaces manual application with an automated system that uses sensors to detect dispensing amount and controllers to adjust parameters, eliminating human error while maintaining process simplicity
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 significantly reduces bubble formation, enhancing the display quality by ensuring complete sealing and preventing air infiltration, as demonstrated by reduced defect rates in decompression tests.
Implementation Method 1
curing the first sealing material and the second sealing material to seal the liquid crystal between the first substrate and the second substrate
Data Source
AI summary
A method of manufacturing a display apparatus, includes disposing a first sealing material along an edge of a first substrate, disposing a second sealing material in a first area disposed at a side of the first sealing material, disposing liquid crystal on the first substrate, disposing a second substrate on the first substrate, curing the first sealing material and the second sealing material to seal the liquid crystal between the first substrate and the second substrate, and disposing an image capturing device in association with the first area of the first substrate. The second sealing material is disposed on the first substrate along imaginary lines. Each imaginary line includes a start point and an end point. The second sealing material is disposed, in association with each imaginary line, from a respective start point toward a respective end point.