Apple Is Studying - How To Detect Light Through The Display For Face ID And Touch ID

Mar 05, 2021 News

Apple Is Studying - How To Detect Light Through The Display For Face ID And Touch ID

Like the iPhone 12 and iPhone 12 Pro series, current iPhone models have their Face ID system and sensor kit installed in the bangs on the display's top. However, Apple is working on a system that will eventually minimize or completely eliminate bangs.

In the patent application published on March 4, titled "Sensing System for Detecting Light Received by the Light-emitting Layer of Electronic Device Display Screens," Apple listed a system that embeds the light detection layer into the display stack is listed. The light sensors related to the light-sensing system can be distributed around or inside the display screen's active display area.

The patent gives two direct examples, claiming that the light sensor can combine the touch screen's object image, which can be used for the Touch ID in the screen based on the optical imaging system. The patent also believes that the iPhone's ambient light sensor can also be included. More specifically, the system itself may consist of photodiodes or solar cell arrays integrated between pixel areas or around the light-emitting display. The system can use electrical signals from photodiodes or solar cells to sensing colors or light incident intensity on the display stack.

The patent states that it mainly covers ambient light sensors in the system but adds that its value does not stop there. The ambient light sensor is just an example. In other embodiments, the light-sensing system can be appropriately configured as or used with the following methods; optical imaging systems (such as cameras, light field sensors, depth sensors, fingerprint imaging sensors, iris Or retinal imaging system, etc.), touch input sensor, force input sensor, biometric measurement system (such as optical electrocardiogram sensor, blood oxygen saturation sensor, a respiration sensor, etc.) and so on.

Most of the description of this patent focuses on the ambient light sensor. Even if it is only used for the ambient light sensor, the system can also be used to reduce the size of future iPhone models' bangs because the light sensor is currently embedded in the bangs. However, in light of rumors that Apple is seeking to minimize bangs or re-introduce Touch ID on future phones, the patent application will likely be part of an increasing number of technologies that may achieve this goal.

Apple submits numerous patents every week, so a single patent application does not give a good indication of the timing or possibility of product release.


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