摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive display sheet which is capable of displaying characters and images of electronic information and with which write once and read after and partial erasure are possible and a display device using the same. SOLUTION: The display sheet which is provided with at least many display pixels changed in their state by a magnetical effect and partially magnetizable and degaussable semi-rigid magnetic materials and contains particles and in which the display pixels contain particles which are rotatable and unidirectionally magnetized permanent magnets selectively coated with >=2 colors on the surfaces in capsules and the image display device using this display sheet.
|