Over the decades, the touch design has been changing from the simple button/knob to a display, either non-interactive or interactive touchscreen.
Since 2012, OEMs in various industries have started to integrate touchscreens into their products.
ABREX®-D is designed for display durability testing and it is so far the only testing machine that fulfills VDE SPEC 90017 and many display specifications.
Description
ABREX®-ABRASION, is a soft-chemo-mechanical fingertip & hand abrasion. The simulated wear pattern matches reality with 99% accuracy.
It is a highly complex abrasion process which involves:
A 45° angle impact driven by a dynamic pneumatic cylinder attached with a viscoelastic fingertip under a defined load
Then a friction rubbing or tumbling motion between the sample and a textile containing dirt, dandruff, oil, sweat or various types of testing liquids
Followed by a retraction movement with or without the contact at the surface depending on the application.
Specification
Application
• Visible defects
Scratches can be easily made under the dynamic motion of human beings. Fingerprint or dirt print affinity is another issue; either easily removed by a few cleaning steps or certain anti-fingerprint coatings are applied to prevent those imprints.
• Non-visible defects
Abrasion is often caused by human finger touch/ swipe/ zoom actions and other mechanical loads. Under this abrasion, the layers of functional coatings can suffer invisible damages and these micro defects, will result in a malfunction of the display. The natural behavior of a customer who identifies a problem with the functioning of a touchscreen is to return the entire product, causing an undesirable cost to the producer.
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