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.

This paper mainly introduces the development of 110 inch HDR display based on Mini‐LED technology. In this work, the peak luminace and color gamut were futher improved by using direct‐lit backlight and Quantum dots technology .Moreover, the uniformity of the Mini‐LED display is discussed.

The deformation-coordination ability between ductile metal and brittle dispersive ceramic particles is poor, which means that an improvement in strength will inevitably sacrifice ductility in dispersion-strengthened metallic materials. Here, we present an inspired strategy for developing dual-structure-based titanium matrix composites (TMCs) that achieve 12.0% elongation comparable to the matrix Ti6Al4V alloys and enhanced strength compared to homostructure composites. The proposed dual-structure comprises a primary structure, namely, a TiB whisker-rich region engendered fine grain Ti6Al4V matrix with a three-dimensional micropellet architecture (3D-MPA), and an overall structure consisting of evenly distributed 3D-MPA “reinforcements” and a TiBw-lean titanium matrix. The dual structure presents a spatially heterogeneous grain distribution with 5.8 μm fine grains and 42.3 μm coarse grains, which exhibits excellent hetero-deformation-induced (HDI) hardening and achieves a 5.8% ductility. Interestingly, the 3D-MPA “reinforcements” show 11.1% isotropic deformability and 66% dislocation storage, which endows the TMCs with good strength and loss-free ductility. Our enlightening method uses an interdiffusion and self-organization strategy based on powder metallurgy to enable metal matrix composites with the heterostructure of the matrix and the configuration of reinforcement to address the strength-ductility trade-off dilemma.

With the development of ultra‐high definition (UHD) display technology, the display system can make the picture more appealing and realistic. It is very difficult for us ordinary people to enjoy the traditional famous art works because of its expensive price and the rare amount. Compared with the traditional art works, the price of the novel UHD digital art display system is reasonable. What's more, it can provide the real sense as the realistic paintings. Besides the photo display, the customer also want the system display the UHD video. This paper presents a novel wireless transmission system based on the rk3399 chip from Rockchip with Wi‐Fi module, bluetooth module, ethernet network module and highspeed interface circuit for UHD digital art display, especially for UHD vedio. It is designed that a hardware system with smaller printed circuit board (PCB), lower power loss and lower price. Furthermore, the transmission rate is less than 300ms, which can provide an excellent watch enjoyment.