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One of General Digital's Optical Bonding Laboratories' specialties is Optical Bonding. Optical Bonding is the affixing of two optical elements to one another using a liquid adhesive. The qualifier optical implies that the adhesive is transparent, has a suitable refractive index and is made under adequate control such that there are no significant variations in the optical properties within a single bond. In this way, we differentiate bonding from lamination. Optically bonding an LCD, OLED or Plasma display improves both optical performance and durability. By selecting an appropriate adhesive that matches the index of refraction of the flat panel and the overlay, General Digital™ is able to remove all of the air gaps, thus reducing the number of internal reflecting surfaces that can lead to degradation of optical performance. Providing a durable adhesion between the flat panel and the overlay improves the displays' ability to resist shock, vibration and moisture. Typical bonded overlays include contrast enhancement filters, EMI/RFI filters, vandal shields, touchscreens, and thermal heaters .

EMI (electromagnetic interference) shielding is necessary to protect against spurious RF (radio frequency) signals or co-existing electronic or electrical systems, as well as providing high electrical isolation properties. Various applications, including those in the military and medical equipment markets, can benefit from the use of EMI/RFI shielding.

General Digital's Optical Bonding Laboratories specializes in the following configurations.

• Enable Display Assemblies to Satisfy FCC and MIL-STD-461 Requirements

• Optically Clear ITO Coatings Down to 5 Ohms/Square. Coating must be done to one or both sides of the glass.

• A busbar is then provided all around to ensure good ground contact in the final enclosure.

• The busbar can be eliminated in some designs where the EMI glass is bonded to a frame at General Digital™ using a conductive adhesive.

• Busbar configuration will depend on overall system design constraints:

• U-shaped used to bring conductivity from the bonded side of the glass to the top.

• L-shaped used to bring conductivity from the ITO surface to the edge for contact with an EMI gasket mounted along the side of the display.

• Surface busbar used when the ITO surface is on the outside of the display assembly and the EMI gasket will be between the assembly and the monitor bezel.

• Phone (Domestic & International): 860.282.2900

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