The on-board display is a device installed inside the car, which is mainly used to display vehicle-related information and provide a variety of functions. Its role includes but is not limited to the following aspects: information display: The vehicle display can display the vehicle's speed, speed, fuel consumption, mileage and other basic information, so that the driver can understand the status of the vehicle at any time. Navigation systems: Many in-vehicle displays are equipped with navigation functions that can provide real-time map navigation, route planning and voice prompts to help drivers stay in control. Entertainment function: The car display usually also has multimedia playback function, which can play music, videos and pictures, providing entertainment and leisure functions.