IMAGING DEVICE AND IMAGE ACQUISITION DEVICE

摘要

An imaging device comprises at least one unit pixel cell. Each of them comprises: a photoelectric conversion layer having a first and second surfaces; a pixel electrode and a shield electrode located on the first surface and separated from each other, a shield voltage being applied to the shield electrode; an upper electrode located on the second surface and opposing to the pixel electrode and the shield electrode, a counter voltage being applied to the upper electrode; a charge accumulation node electrically connected to the pixel electrode; and a charge detection circuit electrically connected to the charge accumulation node. The charge detection circuit includes a reset transistor that sets the pixel electrode at an initialization voltage at predetermined timing. An absolute value of a difference between the shield voltage and the counter voltage is larger than an absolute value of a difference between the initialization voltage and the counter voltage.

主权项

1. An imaging device, comprising:
at least one unit pixel cell, each of the at least one unit pixel cell comprising:
a photoelectric conversion layer having a first surface and a second surface being on a side opposite to the first surface;a pixel electrode located on the first surface;a shield electrode located on the first surface, the shield electrode being separated from the pixel electrode, a shield voltage being applied to the shield electrode;an upper electrode located on the second surface, the upper electrode opposing to the pixel electrode and the shield electrode, a counter voltage being applied to the upper electrode;a charge accumulation node electrically connected to the pixel electrode; anda charge detection circuit electrically connected to the charge accumulation node, wherein the charge detection circuit includes a reset transistor that sets the pixel electrode at an initialization voltage at predetermined timing, and an absolute value of a difference between the shield voltage and the counter voltage is larger than an absolute value of a difference between the initialization voltage and the counter voltage.