air gap bonding

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By Steve Baker | Sep 28, 2015
Front panel integration assembly

Displays and touchscreen performance are becoming critical components of devices. The typical display is composed of many layers that are combined to help a display function properly under its intended condition. GMN offers front panel integration and bonding to help customers develop the construction and stack up of display components.

As a front panel integrator, GMN is proud to offer bonding capabilities to adhere display components together. Common display components may include a stack-up of a layer of cover glass, a touch panel, and an LCD. GMN combines these separate pieces together by using high-grade adhesives and bonding technologies.

GMN offers three bonding technologies including air gap/framed adhesive, rigid-to-rigid liquid optically clear adhesive (LOCA), and rigid-to-rigid optically clear adhesive (OCA) bonding. These bonding solutions serve a wide range of industries including medical, military, automotive, instrumentation and industrial controllers. We will discuss the three bonding technologies, including both the benefits and challenges of each, in this blog series.

To begin, air gap bonding will be discussed as it is the original GMN bonding capability. With 20 years of experience providing air gap bonding technology, GMN is an expert and a trusted industry bonder. Air gap bonding uses a framed adhesive with a gasket that leaves behind a small air bubble in the part stack up. This is a popular bonding capability for devices because it is lower in cost than other bonding options.

While lower cost is a benefit, it also presents challenges in product design. When the layers are integrated with a gasket and an air gap is formed, it can be difficult to read the screen in bright light and causes the product to be more susceptible to moisture damage and breakage. Next we will present another bonding option, rigid-to-rigid liquid optically clear adhesive bonding.

Read our other blogs in the bonding series:

Bonding technologies: liquid optically clear adhesive (LOCA) (part 2 of 3)

Bonding technologies: rigid-to-rigid optically clear adhesive (OCA) (part 3 of 3)