A new display device, SXRD, has been developed for projection displays. SXRD consists of vertical aligned nematic (VAN) liquid crystal and inorganic alignment layers with narrow cell thickness less than 2 µm on uniquely-designed Silicon backplane, featuring high resolution more than Full HD, high contrast ratio of 4000:1 and rapid response less than 5 msec. The SXRD devices developed deliver Full HD (1920H × 1080V) in 0.78-inch diagonal panel and 8.85M resolution (4096H × 2160V) in 1.55inch diagonal panel. Products using SXRD will appear into the market for rear projection TVs, front projectors and Digital Cinema Projectors.
To contribute to the size reduction of electromagnetic devices, a multipole magnetizing method for Nd-Fe-B isotropic bonded magnets using a heating system without any magnetizing power supply was examined. After rapidly heating above their Curie temperature, the magnets are magnetized during cooling in the presence of a magnetic field generated by a set of Sm-Co permanent magnets. The level of magnetization can be tailored by variation of the final temperature to which the magnets are cooled in the presence of the magnetic field. Due to the heating process, the magnets show excellent thermal stability.
Fine pole-pitch magnetization of Nd–Fe–B magnets is an important technology that contributes to miniaturization of electromagnetic devices and smaller fractional movement. However, as Nd–Fe–B magnets have a high coercivity, large amounts of energy are required for magnetization. Miniaturization of devices is associated with insufficient magnetization characteristics due to the limitations of current density. We developed a magnetization method using heating system. This method involves cooling in the magnetizing field by permanent magnets after rapid heating to temperatures above the Curie point of the Nd–Fe–B magnet. This method, which we named “ultra high magnetizing (UHM) process,” achieved greater magnetization characteristics than conventional technology. Therefore, the UHM process is a useful technology to achieve further miniaturization of electromagnetic devices.
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