Opt Alpha Gel (short for optical bonding) is a transparent silicone gel with 99% transmittance. It can be used to optimise the contrast and luminescence of LCD displays with about 15%. The material improves the visibility of display by decreasing outside light reflection and LCD surface reflection.

The softness of the gel improves the shock resistance and stress release of LCD and touch screens. Lower reflection loss by the gel contributes to smoother touch-panel operation. It is flexible, and durable against heat and UV.

The material is available in thicknesses between 175 and 1000 micrometres.