IMAGE PICKUP DEVICE CAPABLE OF PREVENTING LEAKAGE CURRENT OF PIXEL

摘要

An imaging device capable of preventing leakage current of a pixel is provided to prevent leakage current flowing into the pixel when all pixels connected to a column line are not selected. An imaging device(1000) comprises an active pixel sensor array(100), a leakage current suppression part(200), a reciprocity double sampling circuit(300), an analog-to-digital converting circuit(ADC)(400) and a raw driver(500). A plurality of pixels is connected to a column line. The leakage current suppression part comprises a leak current cut-off circuit. The leak current cut-off circuit blocks leakage current of the plurality of pixels. If all of the plural pixels are not selected, the leak current cut-off circuit provides leakage current suppression voltage to the column line. The leak current cut-off circuit is connected to the column line. The leak current cut-off circuit comprises an MOS transistor connected between a power terminal and the column line.