Optical Display Bonding Airflow Cleanliness
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Solution Overview
Problem
The surfaces of optical members and optical display units being bonded together often become contaminated with foreign matter such as dust or dirt, leading to insufficient cleanliness during the bonding process in conventional manufacturing methods.
Innovation Solution
A method and system that utilize an airflow, including ionized gas, to maintain high cleanliness during the bonding of optical members and optical display units, using feed means like contact-type rollers to prevent electrostatic charges and contamination, and peeling off release films just before bonding to expose surfaces immediately for bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional bonding methods are used without airflow control, then the manufacturing process is simple, but the surfaces become contaminated with foreign matter such as dust or dirt
Solution Approach 1:
The patent introduces an airflow system (pneumatic approach) into the bonding environment to prevent foreign matter contamination. Air blowers are installed to generate controlled air currents that sweep away dust and particles from the bonding surfaces, thereby resolving the contamination issue without requiring complete isolation chambers.
Solution Approach 2:
The patent creates a controlled bonding environment that isolates the bonding area from the surrounding atmosphere. By using airflow barriers and controlled air circulation, the system maintains a cleaner, more controlled environment during bonding operations, effectively preventing external contamination.
2Object-affected harmful factors
If release film is peeled off before bonding, then the bonding surface is exposed early, but the exposed surface becomes contaminated with foreign matter
Solution Approach 1:
The release film is peeled off in advance before the bonding step, allowing the bonding surface to be prepared and inspected beforehand. The airflow system is activated during this exposure period to prevent foreign matter deposition on the newly exposed surface, enabling preliminary actions without compromising surface cleanliness.
Solution Approach 2:
The airflow system continuously operates during the release film peeling process to protect the exposed bonding surface from contamination. The air currents generated by the blowers sweep away particles that might otherwise settle on the exposed surface during the peeling and preparation phases.
3Reliability
If contact-type feed means are used, then the optical display unit is fed reliably, but electrostatic charges are generated causing contamination
Solution Approach 1:
The airflow system is integrated with the contact-type feed means to counteract electrostatic charges generated during feeding. The air currents help dissipate static electricity and prevent particle attraction to the fed optical display unit, allowing reliable mechanical feeding without significant electrostatic contamination.
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 effectively prevents contamination and electrostatic damage, ensuring high-quality optical display devices by maintaining surface cleanliness and reducing the risk of dust or dirt deposition during the bonding process.
Implementation Method 1
the airflow in the environment is comprised of an ionized gas at least a position where the optical member is bonded to the optical display unit
Implementation Method 2
the airflow of the ionized gas flows on the optical display unit that is fed while being in contact with feed means before and/or during the bonding step
Data Source
AI summary
It is provided that a method and a system for manufacturing an optical display device, which make it possible to bond an optical member and an optical display unit together with a certain degree of cleanliness maintained. The method for manufacturing an optical display device including an optical display unit (W) and an optical member (11, 12) bonded to the optical display unit (W), which includes a bonding step for bonding the optical member (11, 12) to the optical display unit (W) in an environment with an airflow.