Apple announced on Thursday a patent application describes the transparent shell filled with conductive liquid, applying different current, voltage shell transparent, opaque or state changes, used in flexible interconnection, interactive display and Windows environment or biological sensors. According to the data released by the United States patent and trademark office, apple is the name of the patent "transparent structure filled with electroactive fluid", through the conduction current or voltage change of the liquid crystal structure, the liquid can be deployed according to its specific performance, offers a variety of purposes.

For example, in some implementation plan, with proper electrode or plug transparent shell coating transparent fluid can provide the perspective of the conductive components. Other design include insert the connector of flexible substrate to create a conductive to overcome the mechanical fatigue points, such as smart watches concave and convex point and so on.

To further the implementation of the scheme with liquid crystal structure, applied voltage, change status or color, applications include flexible interactive display.

Apple's patent documents, points out that the active fluid technology could be used in wearable devices. In one instance, intelligent watch populating a conductive fluid of the heart rate sensor, provide greater resistance and reliability than traditional materials.