LED Lighting Can Control iPhone- Tungsten Crucible Made Sapphire Substrate of LED

United States Patent and Trademark Office (PTO) to grant Apple Inc a new patent in the local time on February 3, the patent called "Proximity and multi-touch sensor detection and demodulation" It can perceive sensor at close range and can cooperate with traditional multi-touch screen to extend user control area beyond the screen, thereby detecting the non-contact gesture. This technology is somewhat different with 3D Touch pressure touch technology of iPhone6s. 3D Touch measures the intensity of the user touch down, and the new 3D suspension gesture control patent measures user actions over the screen.

The industry is committed to study the non-contact interaction, such as through the camera and certain other long-distance optical system to operate long range gesture control. Apple's 3D suspension gesture control patent operational mechanism is as follow: LED light irradiation on the user's finger, returned after being captured by the photodiode to achieve controlling iPhone without touch the screen. The system can detect fingers, hands and other objects which suspended over the screen

As we known, tungsten crucible cultivated sapphire crystal with high hardness, high light transmittance, wear resistance and other excellent physical and chemical properties, favored by many. Sapphire often use as LED substrates, currently, LED sapphire substrate material on the market has sapphire, silicon and silicon carbide. Sapphire as LED substrate material has many advantages: Firstly, the sapphire substrate production technology is mature, having better quality; secondly, sapphire has excellent physical property and stability chemical property can be used in high temperature growth process; thirdly, sapphire has high mechanical strength, easy handling and cleaning; and finally, the price is reasonable. Although the sapphire has poor thermal conductivity, and there is no major impact on small current work. Thus sapphire using in LED lighting is more widely.

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