| 摘要 |
PROBLEM TO BE SOLVED: To provide: a writing device without being wired, capable of achieving excellent availability with a simple structure; a display sheet with a simple structure, capable of displaying a desired image using the writing device; and an electric device having the writing device and display sheet and being capable of achieving excellent availability with a simple structure. SOLUTION: A writing device 8 includes: a casing 81; a power supply 82 housed in the casing 81; an electrode 83, which is provided in the casing 81 and electrically connected with one electric pole of the power supply 82; and a conductive part 84 with conductivity, which is provided in the casing 81, can contact with a display surface directly or indirectly and is electrically connected with the other electric pole of the power supply 82. COPYRIGHT: (C)2011,JPO&INPIT |
