Recently, people present higher standard of the luminance and contrast for display system, especially for large UHD display which increasingly demands for HDR 1000 compatible. Compared with the side-emitting LED backlight, direct lit-type backlight can provides higher luminance, but global backlight control cannot satisfy high requirement for the contrast and the power loss. In order to improve the performance the backlight system, the local dimming backlight control with Mini-LED become one of the best choices for us. In this paper, we present a pixel-level local dimming backlight system, which is applied for the 75 inch UHD display system.

BOE has been committing to the promotion and popularization of 8K display technology. In recent years, it has successively exhibited 65 '/ 75' / 98 / 110 '8K TV or panel technology on Sid [1]. Nowadays, most of these technologies have been introduced into mass production, and some have been developed into formal products. The system introduced in this paper has been applied to the 8K broadcast monitor products. It can directly receive 4 channels of 12G-SDI signals of 8K camera as input, and embed IP such as gamut conversion, Up-Scaler, RGB Processor, Gamma Curve Adaptation, etc. Finally, the display effect of signals from different color gamut and different standards (SDR, BT.1886, HLG, PQ, etc.) is correctly displayed on it.

Mini‐LED Backlight Units can reduce the light mixing distance and the number of backlight blocks, making the monitors lighter and thinner, achieving higher contrast and better effects. As a leading company in the panel display industry, BOE has been developing Mini‐LED technology since 2016, and has developed 65', 75', and 86' smart commercial display monitors based on Mini‐LED technology.This paper verifies the Local Dimming technology with multiple partitions using FPGA, it's safe to say that it obtains a finer light distribution and less halo effect, which will strongly support MiniLED display products in the future.

With the rapid development of 8K and 4K technology, consumers are enjoying more and more vivid pictures through ultra‐highresolution panels. Many technologies have been introduced to improve the video quality such as super resolution, HDR (High Dynamic Range), denoising and etc. Among all these techniques, “color” is one of the most important issues for getting a wonderful watching experience. A wide range of research has been done to fully illustrate different models and standards (CIE1931, CIE1976 and etc.) to better define colors on different devices. This work aims at achieving a color calibration system with ultra‐low latency delay on FPGA for 4K 60fps system based on 3D‐LUT. The “calibration” mean that the system would characterize the target panel and then correct each pixel for a better color performance. In the experiment, this system could process a single 4K frame within 16.67ms and the average Delta E is dropped from 5.52 to 1.69 which refer to a 69.38% improvement.

Picture quality calibration technology plays an important role in the display system. The focus of the radio and television system is to obtain the best visual experience, and many of them include beautifying images and pleasing the audience. And the focus of the professional monitor system is to restore the live effects of the camera and other film sources to the greatest extent. This paper introduces the image quality calibration technology in the monitor system, mainly around the color temperature, gamma and color gamut calibration technology, and realizes the automatic calibration process. This method has been successfully applied to the image quality calibration work of monitor products. It liberates human resources, significantly improves the efficiency of R&D and testing of monitor products, and greatly promotes the mass production of monitor products.