What is air bonding?
Air bonding, also known as frame bonding, is a method of attaching a cover glass (CG) or touch panel (TP) to an LCD display module (LCM) using a frame or bezel.
It is a simpler and more cost-effective method compared to optical bonding.
This method is suitable for applications that do not require high levels of durability or resistance to harsh environmental conditions.
It is commonly used in indoor applications such as kiosks, point-of-sale terminals, and gaming machines.
The structure of air bonding?
- Cover glass or touch panel
- Frame or bezel
- Adhesive (double-sided tape, a liquid adhesive, or a pre-cured adhesive film)
- LCM
The advantage of air bonding
- More Cost-effective
It is often more cost-effective than other remediation techniques, such as excavation or chemical treatment.
- Non-invasive
It does not require the excavation of contaminated soil or the installation of treatment systems.
- Relatively quick process
It is a relatively quick process that can be completed in a matter of weeks or months, depending on the extent of contamination.
- Sustainable remediation technique
It is a sustainable remediation technique that does not generate any hazardous waste or byproducts.
- Wide range of applications
It can be used to treat a wide range of contaminants, including VOCs, petroleum hydrocarbons, and chlorinated solvents.
- Minimal site disruption
It does not require major site disruption or closure, allowing normal site activities to continue during the remediation process.
- Low maintenance
It requires minimal maintenance, reducing the ongoing costs associated with remediation.
What is optical bonding?
Optical bonding, also known as full bonding, is a method for attaching the cover glass or touch panel to the display module using a layer of optically clear adhesive.
The adhesive is applied to the surface of the display module, and the cover glass or touch panel is then placed on top of the adhesive.
The adhesive is then cured using UV light or heat, which creates a strong bond between the cover glass or touch panel and the display module.
It is a method of attaching a cover glass or touch panel to a display module using an optically clear adhesive.
The structure of optical bonding
- Cover glass or touch panel
- OCA or OCR films
- Optically clear adhesive
- LCM
The advantages of optical bonding
- Enhanced readability
It reduces the amount of reflection, glare, and ambient light interference on the display, resulting in improved readability in bright and outdoor environments.
- Improved durability
The bonding process enhances the durability of the display by providing additional protection against scratches, cracks, and other physical damage.
- Improved contrast and color
Optical bonding reduces the amount of light scattering and refraction, which can improve the contrast and color accuracy of the display.
- Improved touch performance
It can improve the responsiveness and accuracy of touchscreens by reducing the air gap between the display and the touch sensor.
- Reduced power consumption
It can help reduce power consumption by improving the efficiency of the backlight system.
- Increased operating temperature range
It can increase the operating temperature range of the display by improving heat dissipation and reducing the risk of thermal damage.
- Moisture and dust protection
It can provide an additional layer of protection against moisture and dust, which can improve the reliability and lifespan of the display.
Conclusion
Air bonding and optical bonding are two different methods used to attach a cover glass or touch panel to a display module.
The optical bonding structure is more complex than air bonding, but it provides greater durability and sunlight readability.
The optically clear adhesive eliminates the air gap between the cover glass or touch panel and the display module, which reduces reflections and increases contrast.
However, optical bonding is generally more expensive than air bonding due to the specialized equipment and additional manufacturing steps required.
The choice between these two methods depends on several factors, including the application, environmental conditions, and budget.
