The surface refinement of display glass is divided into three types: glare type, anti-glare type and anti-reflection type.
Glare type displays are (flat) screens with a reflective surface. These have a small advantage in terms of maximum brightness and offer a subjectively higher contrast impression than "anti-glare" or "anti-reflective" displays. However, the latter offer the advantage of better readability, especially in bright ambient light. "Anti-glare" displays use a diffusive mechanism, i. e. scatter incident light and therefore appear matt. By reducing the coherence of the reflected light, unwanted reflections appear unfocused to the eye and are therefore no longer perceived as disturbing. "Anti-reflective" properties of a display can be achieved by optical bonding. This minimizes internal and external light reflections at the boundary layer of two optical media, thus improving readability.