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磁粒子显示是一种平板型、可进行矩阵选址的显示器件,它由自由旋转的球形粒子在平面上组成图象,每颗粒子都是一个极微小的永磁体,半个球面是暗色的,而另半个球面则是光亮的。因此,由粒子反射出的环境光乃是粒子方位的函数,而粒子方位的改变又受磁场的控制。这个磁场由贴近磁粒的准永磁阵列产生,它具有存储器的功能,只要在嵌入显示器内的导体上通以电流,便可选择被磁化的区域。磁粒子和磁粒子显示器结构的示意图分别由图1和图2表示。
Magnetic particle display is a flat, matrix-capable display device that consists of a freely rotating spherical particle that is imaged on a flat surface. Each particle is a tiny, permanent magnet, and the half sphere is dark , While the other half of the sphere is bright. Therefore, the ambient light reflected by the particles is a function of the orientation of the particles, and the change of the orientation of the particles is controlled by the magnetic field. This magnetic field, which is generated by a quasi-permanent magnet array close to the magnetic particles, has the memory function of selecting the area to be magnetized as long as a current is applied to the conductor embedded in the display. Schematic diagrams of the magnetic particle and magnetic particle display structures are shown in FIGS. 1 and 2, respectively.