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DHAs are integrated by bonding:

DryBond and wet (optical) bonding,
patented air-gap bonding

ALP uses various bonding approaches to integrate DHA to minimize the reflections and ruggedize the unit. These approaches include innovative DryBond, traditional wet bonding (optical bonding), and our patented Total Reflection Control Air-Gap Bonding.  

Advantages of DHA with an air-gap:
1. Less cost
2. Slimmer and Lighter
3. Higher heating efficiency
4. Low maintenance
5. Better optical performances

ALP has recommended our air-gap integration to many of our customers and manufactured many in-the-filed DHAs that are delivered worldwide.


ALP/RSP's DryBond process is a self-developed proprietary technology to bond two rigid substrates. We use pressure-sensitive adhesives as bonding agents, which are free of yellowing problems and tested to sustain wide temperature ranges of applications. This technology is applied to laminate a chemically strengthened 0.3 mm thin glass to a resistive touch panel and produce our rugged resistive touch panel gTouch series product. We also use our DryBond process to integrate EMI or heaters into DHA.

ALP also offers traditional wet optical bonding services. Bonding agents, acrylamide base, and curing processes are formulated and optimized to eliminate bonding stress. Our bonded units are qualified for avionic and land mobile applications. The bonding has proven to be stable and durable in high altitudes and highly vibrating environments even after ten years in the field. The process is easily applied to integration of the touch screen with other functionalities, such as a heater or an EMI shield (ITO or micro mesh).


All services are done in our facility, making ALP a one-stop shop for our customers for advanced display solutions. Call today to find out our high flexibility and various capabilities for touch screen customization.

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