Anti-Newton Ring

Anti-Newton ring (ANR) refers to methods that prevent the so-called Newton’s rings, which are colorful, rainbow-like spots or rings visible on the screen when a thin layer of air is trapped between the glass and the touch foil. This effect degrades the appearance and readability of the image. To eliminate it, solutions such as matte surface finishes, micro-spacer dots, special micro-structures, or a transparent optical adhesive (OCA) that fills the air gap are used. These measures are especially important in air-bonded screens, where the protective glass is not permanently glued to the display.