Mildex Capability

Optical Bonding

Eliminate the air gap between cover glass and display. The result: dramatically better readability, reduced reflections, eliminated condensation, and a structurally stronger assembly.

The Problem with Air Gaps

A standard display assembly has a millimeter or two of air between the LCD and the cover glass or touch sensor. That air creates two extra optical interfaces — each one reflects light, scatters it, and reduces contrast. In bright sunlight, those internal reflections can wash out a screen entirely. In cold environments, the air gap can fog or condense, blinding the operator at exactly the wrong moment.

How Optical Bonding Solves It

Optical bonding fills the gap with a transparent, refractive-index-matched optical adhesive — typically a silicone or LOCA (liquid optically clear adhesive). Light passes from the LCD straight through to the operator's eye with virtually no reflection or scattering. Sunlight contrast can improve by 3x or more on the same display.

Mechanical Benefits Too

A bonded stack is significantly stiffer and stronger than an air-gap assembly. Impact energy is distributed across the full bonded area instead of concentrating at the cover glass alone. Bonded displays survive drops, vibration, and thermal cycling that would crack a conventional assembly.

The Mildex Process

Optical bonding is unforgiving — a single trapped bubble or speck of dust ruins the panel. Mildex performs bonding in a controlled cleanroom environment with cure profiles and adhesive chemistries tuned for each customer's specific display, cover glass, and operating temperature range.