The circuit board 30 is mounted inside the housing 40. The circuit board 30 may be a motherboard of the electronic device 100. The circuit board 30 may be integrated with functional components such as a camera, a processor and so on. Meanwhile, the display screen 20 may be electrically coupled to the circuit board 30.

In some embodiments, the circuit board 30 has a display control circuit. The display control circuit outputs an electrical signal to the display screen 20 to control the display screen 20 to display information.

The housing 40 is configured to form an external contour of the electronic device 100. A material of the housing 40 may be plastic or metal. The housing 40 may be integrally molded.

The ambient light sensor 50 is mounted inside the housing 40. Meanwhile, the ambient light sensor 50 is electrically coupled to the circuit board 30. For example, the ambient light sensor 50 may be integrated on the circuit board 30. The ambient light sensor 50 is configured to detect ambient light intensity, such that the electronic device 100 may adjust brightness of the display screen 20 according to the ambient light intensity detected by the ambient light sensor 50, thus the brightness of the display screen 20 is adapted to surrounding environment. For example, in a dark environment, the electronic device 100 may lower the brightness of the display screen 20, and in a bright environment, the electronic device 100 may improve the brightness of the display screen 20.