Detection substrate and flat panel detector

Abstract

A detection substrate and a flat panel detector. The detection substrate includes a group of pixel units distributed in an array, each pixel unit including a thin-film transistor, a photoelectric conversion device, a first bias voltage line and a compensation capacitor. A bottom electrode of the photoelectric conversion device is electrically connected to a source electrode of the thin-film transistor, and the first bias voltage line is electrically connected to a top electrode of the photoelectric conversion device. The compensation capacitor includes: a bottom electrode, a dielectric layer, and a compensation electrode. In a peripheral area, the detection substrate includes: a group of first conductive layers and a second bias voltage line. A first conductive layer is electrically connected to a column of compensation electrodes, the second bias voltage line is electrically connected to the first bias voltage line and the first conductive layer.