Tungsten Crucible Made Sapphire Wafers - Fingerprint Identification
- Details
- Category: Tungsten's News
- Published on Friday, 19 February 2016 17:19
In 2013 Apple Computer Inc. introduced Iphone5S. The eye-catching not only in its colors but the innovative fingerprint identification also impresses many people. With the popularity of mobile phone fingerprint identification, now many smart phones all you can think of have fingerprint identification. Fingerprint identification technology has not only become the standard configuration of smart phones, but more to help people protect the phone and personal privacy.
Cover material of fingerprint identification sensor are: ceramics, sapphire and resins. As we knew sapphire has lots of good property which can widely used in mobile phones fingerprinting identification technology and the main advantages are as follows:
1. The phone reads the fingerprint data required to have a very fast speed of sensors. Sapphire wafer has high dielectric constant and good thermal conductivity which can rapid response fingerprint data.
2. Phone fingerprint identification system is very sensitive, if the recognition area is scratched, it will cause recognition failure. It requires fingerprint identification plate with high strength, wear resistance and other properties. The hardness of sapphire wafer is 9H (Mohs hardness) and has good scratch resistance, to better protect the identification system.
3. The fingerprint area in front cover produced by sapphire wafer is kind of mirror which is similar with phone cover glass, making the phone more harmonious overall appearance.
Having high purity, high density, crack-free, precise size, smooth inner and outer walls of the tungsten crucibles for sapphire crystal growth and performance has played an important role.
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