Electronic paper and electronic paper recording system using light receiving elements

摘要

An electronic paper includes: a first substrate which is provided with a plurality of first electrodes; a wiring which applies a voltage to the plurality of first electrodes; a plurality of light receiving elements which are respectively provided between the plurality of first electrodes and the wiring; a second substrate which is arranged to be opposite the first substrate and is provided with a second electrode; an electrophoretic display layer which is arranged between the first substrate and the second substrate; and a light guidance unit which is arranged between the first substrate and the second substrate, and is configured to guide light incident upon the second substrate to the relevant light receiving elements.

主权项

1. An electronic paper, comprising:
a first substrate which is provided with a plurality of first pixel electrodes; a wiring which applies a voltage to the plurality of first pixel electrodes; a plurality of light receiving elements which are respectively provided between the plurality of first pixel electrodes and the wiring; a second substrate which is arranged to be opposite the first substrate and is provided with a second common electrode; an electrophoretic display layer which is arranged between the first substrate and the second substrate; and a barrier wall that is: arranged between the first substrate and the second substrate, immediately above the light receiving elements, and configured to guide light incident upon the second substrate to the relevant light receiving elements, wherein the plurality of light receiving elements detect light from a light irradiation apparatus led using the barrier wall, and control a conduction state between the plurality of pixel electrodes and the wiring, and wherein the wiring is on a side of the first substrate opposite to a side of the first substrate facing the second substrate such that during a writing operation electricity is conducted between the pixel electrodes and the wiring causing an electric field between the pixel electrodes and the common electrode to be generated such that the electrophoretic display layer can switch the display of pixels corresponding to the light irradiation location without using a driving circuit.