Air bonding VS Optical bonding

August 12, 2022

What is air bonding?


Air gap bonding uses a framed adhesive gasket around the perimeter of the display layers, leaving behind a small air gap within the stack-up. As there are no liquid adhesives to dispense and no cure time, air gap bonding is significantly less expensive than other bonding options.


Advantages of Air Bonding of LCD panels:


1. It applies to the clear, common, and static indoor environment.

2. Competitive price for the finished product.


What is optical bonding?


Optical bonding is a process where a layer of resin is applied between the glass or touchscreen and TFT LCD TFT panel of a monitor, bonding them to make a solid laminate with no gaps or pockets of air. When choosing a screen for any project, you should evaluate the environment and operating conditions the screen will have to endure. Industrial grade screens and panel PCs are made rugged with all types of features available to withstand any type of application. One such feature available to consider is optical bonding.


Benefits of optical bonding:


1. Greater durability

The optical bonding process better protects both the cover glass and LCD cell from shock, as the hardened adhesive behind the glass acts as a shock absorber. Shake and shocks are less likely to damage the display and glass, making it an important benefit for transportation applications. In the unlikely event that the glass is damaged, shards of broken glass will remain stuck to the optical adhesive, making it an important benefit for safety reasons in classrooms and meeting rooms.

2. Improved viewing experience

An optically bonded display eliminates the internal reflection between the screen glass and the LCD cell. This results in improved contrast, which enables the display to be better seen in brighter environments. Additionally, the elimination of internal reflection provides a wider viewing angle, allowing the display to be seen more clearly from wider angles in bigger rooms. Whether you have student desks at the front corners of the classroom, or you have to cram seats up the front sides of the meeting room, everyone will be able to see the screen clearly without reflection.

3. Improved touch experience

Optical bonding reduces parallax, the refraction angle of light which makes the physical location of a pen or finger on the glass appear to be different from the corresponding point on the LCD, depending on your line of sight. This leads to inaccuracy of touch and a poor user experience. Optical bonding removes the air gap, which eliminates parallax to give you the most accurate touch, for the most natural and reliable experience.

4. Maximum dust & moisture protection

The elimination of the air gap between the cover glass and the LCD panel means that dust and moisture are unable to penetrate the glass and cause condensation on the inner surface of the glass. This is especially important in humid environments, where the high humidity can cause fogging on a non-optically bonded display over time. It is also important for transportation and storage, ensuring the displays remain in an optimal state for a much longer time.

5. Supports Durable and Rugged Displays