Mildex Capability

Glass Film Glass (GFG)

GFG construction sandwiches a thin polymer touch sensor between two layers of strengthened glass — delivering exceptional optical clarity, structural rigidity, and field durability in one stackup.

The GFG Stackup Explained

A Glass Film Glass touch sensor uses three layers: a top cover glass (typically chemically strengthened), a thin patterned film carrying the touch electrodes, and a bottom glass substrate that bonds to the display. The glass-film-glass arrangement gives you the optical performance and rigidity of glass with the manufacturing flexibility and lower cost of film-based sensor patterning.

Why GFG Over Alternatives

Pure glass-glass (GG) sensors are stiff and optically excellent but expensive and slow to produce. Pure film-film (FF) sensors are cheap and flexible but lack rigidity and feel 'plasticky' under the finger. GFG sits in the sweet spot — premium feel and optics, with sensible cost and lead time.

Where Mildex Uses GFG

GFG construction is ideal for mid-to-large rugged displays where the panel needs to feel substantial under the operator's hand, survive years of field use, and deliver high optical performance. We specify GFG for many of our defense, vehicle, and industrial touch products as the default construction.

Engineered Stackups

The exact glass thickness, film type, electrode pattern, and bonding adhesive in a GFG panel are engineered to the application. A panel for a marine chartplotter has different requirements than one for an armored vehicle interior. Mildex tunes the stackup for each.