SENSOR CELL, BIOSENSOR, CAPACITIVE DEVICE MANUFACTURING METHOD, BIOLOGICAL REACTION DETECTION METHOD, AND GENE ANALYZING METHOD

摘要

The present invention provides a bio-sensor comprising a sensor cell matrix in which sensor cells are arranged into a matrix, a row driver which supplies a specific voltage signal to a group of sensor cells lined up in the row direction of the matrix, and a column driver which supplies a specific voltage signal to a group of sensor cells lined up in the column direction of the matrix. Each sensor cell comprises a capacitance element Cs consisting of a pair of opposing electrodes with probe DNAs that react selectively with target DNAs immobilized to their surfaces, a transistor Tr2 whose gate terminal is connected to the capacitance element Cs so that the current value that is output from the drain terminal of this transistor is caused to vary in accordance with the amount of the capacitance variation of the capacitance element Cs which is varied by the hybridization of the DNA, and a switching element Tr1 which supplies a voltage signal supplied from the column driver to the current input terminal of the transistor Tr1.