Patent ID: 7580017

Claim:
An image display medium for enabling an image writing apparatus to supply the image display medium with a voltage for applying energy for writing comprising: a display unit having a memory characteristic including a plurality of pixels; an input terminal externally supplied with a voltage; and a selecting unit receiving a driving signal by at least one of external light, heat, and pressure to apply the voltage supplied to the input terminal, the selecting unit being provided with a plurality of function elements for applying the voltage to the plurality of pixels on the basis of the received driving signal, wherein the function elements are photoelectric conversion elements, the plurality of photoelectric conversion elements are a plurality of photoconductive elements having different characteristics according to wiring resistance to the plurality of pixels of the display unit, the plurality of photoconductive elements are connected using a multiple-layer board with wiring Patterns formed on a plurality of layers, and the plurality of photoconductive elements are arranged in a plurality of via holes on the plurality of layers.