HDR is a method of improving the contrast of light and dark scenes of displays by adjusting different backlight areas by zoning. When playing videos, it automatically identifies and turns off the areas in the video that do not require backlighting, while maintaining the high brightness of the parts that require backlighting, which makes black look deeper than without this function, becoming true black instead of the usual gray, thereby improving the color contrast to produce better image effects to improve the overall picture quality. Our HDR products have various forms and application fields, including but not limited to various types of shopping mall windows that require more saturated color display and energy saving, high-brightness digital display boards in public places, e-sports game monitors, VR game monitors, home multimedia information terminals, smart city solutions, and radio and television ultra-high-definition video production and broadcasting.