Abstract: The present invention provides a backlight assembly defined with a camera area. The backlight assembly comprises a substrate layer on which a reflective layer is disposed, and an optical layer is disposed on the reflective layer. The optical layer is provided with a through hole in the camera area, and an annular light-guide film circles a peripheral of the through hole, wherein an inner ring of the light-guide film is concentrically arranged with the through hole. The invention provides a backlight assembly, which introduces an annular light-guide film to control the direction of light propagation in a certain area around the under-screen camera, so that the light is evenly distributed over the camera area, and the camera area can still perform display function by a liquid crystal layer of the screen corresponding to the camera area, thereby providing a new type of under-screen camera solution.

Abstract: The disclosure provides GOA circuits used for switching display on a screen or on two screens and a driving method thereof. The GOA circuits include first GOA circuits on two sides of a main screen to control display of the main screen, second GOA circuits on two sides of the secondary screen to control display of the secondary screen, a first group of GOA control signals, controlling signal output of the first GOA circuits, a second group of GOA control signals, controlling signal output of the second GOA circuits, a switch controller, connecting the first GOA circuits and the second GOA circuits, and controlling connection or disconnection of the first group of GOA control signals and the second group of GOA control signals respectively.