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Antireflective coating

The touch screen’s surface possesses by default a light reflection factor of 1:9 (ca. 11%). This ratio can be reduced up to 1:50 (2%) by using a variety of antireflection coatings. Low reflection factor is crucial especially in outdoor applications where the module is directly exposed to sunlight. The table below presents the most popular combinations of antireflective coatings:

Glass sensor typesStructure of glass sensor
Polarizer, 6% light reflection
Polarizer + front AR film; 4,5% light reflection
front and rear AR film, 2% light reflection


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