| 摘要 |
PROBLEM TO BE SOLVED: To provide an optically writable display medium that exhibits higher sensitivity, and to provide an optical writing method using the same. SOLUTION: The optically writable display medium laminates an optical switching element and a display element. The optical switching element includes a charge transport layer sandwiched between an upper charge generating layer and a lower charge generating layer. The display element includes a display layer having memory properties. The absorption wavelength region of the upper charge generating layer and the absorption wavelength region of the lower charge generating layer are different from each other. The optical writing method includes irradiating the optically writable display medium with a light having a wavelength that only the upper charge generating layer absorbs and a light having a wavelength that only the lower charge generating layer absorbs, to perform optical writing. COPYRIGHT: (C)2009,JPO&INPIT
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