Recently Apple filed two patents of a screen capable of operating underwater without problem. According to the patently document Apple, it is a technology that uses ultrasonic waves that work even when the device is underwater.
In the text of the document, Cupertino's signature indicates that water or other fluids in contact with the device's screen will not act as a discontinuity of the sound waves and, therefore, The touch detection method can be effective to detect the presence of the user's finger without problem, even in the presence of water droplets (or other low viscosity fluids) on the surface of the device or while the equipment is completely submerged.
Technically speaking, the patent application for Apple refers to the presence of polarizers for use in an acoustic touch detection system, to improve the performance of this system. A polarizer arranged between the transducer and the surface on which the sound waves propagate can be used to improve the rejection of water by the acoustic touch detection system.
Patents requested in early 2019
Although so far they were published by Patently Apple, the two patents were requested by the Cupertino firm in early 2019 and we still do not know if they are planning to include this technology in the iPhone that will be launched in September. However, the rumors have not commented on anything related to these patents, so we would have to wait to see if we will see this technology in 2019, or if it will arrive on the iPhone that will be launched in the future.
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