The light guide plate is the main component of the backlight module of the liquid crystal display. It is mainly used in computer screens, commercial displays and consumer TV products, and is one of the key materials for display backlights. LCD is a passive component and cannot emit light by itself, so it needs a backlight. The light guide plate uses its transparent characteristics to collect the light emitted from the light source, and distribute the light to the entire screen through specific areas and morphological patterns.