Optical bonding is the process of adhering two or more substrates (eg. LCD and touch or cover glass) with optical clear adhesives. Atech optical bonding process applies both gel adhesives (dry bonding) and liquid adhesives (wet bonding).

The advantages of Optical Bonding include: * To reduce internal reflection to achieve sunlight readability    * To enhance ruggedness and shock and vibration resistance    * To enhance moisture resistance    * To prevent condensation under low temperature     * To increase brightness    * To improve contrast ratio     * To enlarge viewing angle