Why is the photo taken by folding the mobile phone pink?

The reason why the photos taken by folding mobile phones are pink is because of the phenomenon of light interference. The screen of folding mobile phone usually adopts flexible organic light-emitting diode technology, and multi-layer films are used on the screen, one of which is a transparent conductive layer. When light passes through these films, it will interfere, which will cause the color of the photos to change.

Specifically, the flexible organic light-emitting diode screen is composed of a plurality of bright spots (pixels), and each bright spot is composed of light-emitting diodes with three basic colors of red, green and blue. When light passes through the screen, light with different wavelengths will pass through thin film layers with different thicknesses, resulting in optical interference. Under certain conditions, this interference will enhance the red light and weaken the blue-green light, thus making the photo appear pink.

In addition, the influence of shooting angle and ambient light may also cause the photo to appear pink. Under different angles and different lighting conditions, the interference phenomenon will be different, so the color of the photo will change.

To sum up, the reason why the photos taken by the folding mobile phone are pink is caused by light interference, and the influence of shooting angle and ambient light will also affect the color of the photos.