Apple proposes that a series of electronic components, such as light or proximity sensors, can be mounted under the substrate, and a corresponding "transparent window" array can be formed in the substrate to allow the sensor to see the outside world, but behind the thin film pixel circuit. Since the circuit can interfere with the operation of the sensor, the design of the thin film circuit and window must be carefully designed to minimize obstacles. Positioning allows surrounding pixels to overlap the window area, effectively hiding them from the outside.
Apple suggests that the window can be more transparent than the rest of the display, allowing the sensor to work more optimally while still providing some usefulness for that area of the screen. Each window will allow light to pass through the screen to the sensor, but an anti-reflective layer can be used internally to preventOLEDThe light from the layer immediately bounces back to the sensor. Apple submits numerous patents and applications to the USPTO each week, but there is no guarantee that these concepts will enter future products or services.