Displays and light bulbs usually emit more wavelength and more directional light than the user sees. Apple is looking to minimize the amount of energy that’s not seen and used to produce more efficient displays that save power. &Quot; an electronic device with a light recovery emission display screen & quot; is a patent application recently exposed by apple, which shows that apple is exploring the addition of such an efficient screen to the device. Apple has taken some effort to ensure that the application covers every conceivable device from a mobile phone to a head mounted display to even a watch. < / P > < p > Apple is also a wide net, and even lists the types of materials it describes, such as crystalline materials such as polymers, metals, glass, sapphire, ceramics, fabrics, fibers, fiber composites, natural materials such as wood and cotton, other materials, and / or combinations of these materials;. However, in a very extensive and sometimes very specific technical patent application, the central purpose is always the same. An & quot; emission monitor & quot; generates its own light, and apple wants to make the process more power-efficient. < / P > < p > the OLED screens used in iPhones and iPads are emission displays. On the contrary, it is called transmission display, that is, the screen itself does not produce light. For example, the displays on early iPods were transmissive because they were illuminated by separate backlit LCD panels. Transparence displays need what Apple calls “photoresist” or “crosstalk proof” structures that allow the display to maintain a clear appearance. < / P > < p > Apple said that without a light blocking structure, light might reach red pixel R, which might result in mixed light between red pixel R and green pixel g, thus reducing the contrast of the display. So, a certain amount of light energy has been deliberately blocked. Apple is studying how to reuse this energy. In order to improve the light emission efficiency of the display screen, the light recovery structure may be included. &The patent application details a variety of ways in which polarized and unpolarized light can be used and then rerouted to or from the display. In each case described, however, the benefits are twofold. First, users can see clear, sharp images on their headphones or any other display. But second, apple can display images with lower overall power consumption. More Samsung devices can now run Android applications on PC through your phone