Before we get into the specifics of the optical bonding process, it is important to know what the primary components used in modern touchscreens are.

Touchscreens typically consist of two primary layers. The inner layer is the LCD or OLED panel, which provides the display output. The outer layer, which may be made of glass or plastic, protects the sensitive LCD panel and handles touch input detection. These layers are separated by an air gap, preventing them from making direct contact. This air gap helps to prevent damage to the screen components, but also creates some less-desirable side effects.

Optical bonding is a process where a layer of optically-clear resin is used to bond the touchscreen glass or plastic cover directly to the LCD or OLED panel beneath it. This technique eliminates the air gap between the layers, creating a single, solid piece.

Illustration of touchscreen layers without optical bonding

Before Optical Bonding

Illustration of touchscreen layers with optical bonding

After Optical Bonding

Optically-bonded screens offer a wide range of advantages compared to their standard counterparts. By addressing common issues such as internal reflections and susceptibility to environmental factors, optical bonding ensures that touchscreens are more reliable and efficient. Below are some of the key benefits of using optically bonded screens.

Optically bonded touchscreens are significantly more durable than their non-bonded counterparts. The bonding resin makes the entire assembly more resistant to physical shocks, vibrations, and impacts. The increased durability provided by optical bonding ensures longer-lasting performance and reduced maintenance costs.

Another advantage of optical bonding is the enhanced clarity of the display. By eliminating the air gap between the layers, optical bonding reduces internal reflections and light refraction, which can cause glare and reduce visibility. This results in sharper, more vibrant images with improved contrast. Enhanced clarity is particularly important in bright environments, such as outdoors or under direct lighting, where readability is crucial for effective operation.

Optical bonding also improves the responsiveness of touchscreens. The resin layer between the touch surface and the display panel allows for a more direct transmission of touch input. This results in faster and more accurate touch detection, enhancing user experience. For applications that require quick and precise touch interactions, this improved response time can be critical for efficient and reliable operation.

In addition to improved responsiveness, optical bonding also enhances touch accuracy. The elimination of the air gap means there is no flexing or movement between the touch layer and the display panel. This stability ensures that touch inputs are accurately registered exactly where they occur, reducing the likelihood of errors or misinterpretation. This improvement is highly beneficial in applications where precise control and input accuracy are essential, such as in navigation systems or interactive kiosks.

Optical bonding significantly improves the ingress protection of touchscreens. The bonding resin creates a sealed barrier that prevents the entry of dust, moisture, and other contaminants. This is especially important in environments where exposure to elements can compromise the functionality and longevity of the touchscreen. Enhanced ingress protection ensures reliable operation even in harsh conditions, reducing downtime and maintenance requirements.

Optical bonding also contributes to better heat dissipation in touchscreens. By eliminating the air gap and creating a solid layer of resin between the touchscreen and the display panel, heat generated by the display is more effectively conducted away from the screen. This helps to prevent overheating, which can cause performance issues or damage to the touchscreen components. In situations where devices are often used continuously or in high-temperature areas, improved heat dissipation ensures reliable performance and extends the lifespan of the touchscreen.

Maple Systems offers optically bonded screens on the following Industrial PCs and Monitors.

For more information about product availability, please contact our sales team by phone at (425) 745-3229, or by email at

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