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Resources   / No Sparkle


Less glare from external light, combined with improved image clarity, offers better overall picture visibility.

An optical effect called "sparkle" has been a problem throughout the displays community. Visual sparkle becomes obvious as a twinkling of the image displayed on screens with matted scattering anti-glare cover layers (e.g. touch sensitive panels), it becomes especially distinct when the head of the observer is moving with respect to the display. Some computer users even complain about focusing problems and eye-strain caused by such “sparkling”. With increasing resolution of modern display screens, the problem seems to become even more severe. On the other hand, reduction of the reflectance of disturbing ambient light sources becomes very important since such devices are often operated under conditions without direct control of the illumination (e.g. outdoors).

When optimizing display systems with respect to visual performance, control of disturbing sparkling effects is not the only objective. In addition, the reflectance of ambient light sources should be minimized (this is actually the original objective for applications of AG-layers) and distinct images of ambient light-sources should be avoided by adequately tuned scattering. At the same time, the AG-layer should not negatively affect the distinctness of the image content of the display screen. The optimization tasks AbraxSys takes comprises at least the following three aspects:

♦ reduction of reflections from ambient light-sources,
♦ reduction of sparkling effects,
♦ maintenance of image quality of the display screen.

Key benefits:
• The world’s first ultra-strong cover glass with state-of-the-art anti-glare effect
• Significantly reduces glare on high resolution displays, even under adverse viewing conditions (bright
  sunlight, high ambient lighting)
• Uniform, homogenous surface modification offers improved visibility and smooth touch experience for
• Unique surface structure optimized for easy cleaning and fingerprint resistance
• Flexibility of the novel etching process offers opportunities for custom gloss values
• Both chemical and thermal strengthening are compatible with Xensation® Cover AG
• Mechanical and strength performance properties of the base glass are not affected by the surface treatment