| 摘要 |
In a biosensor using a thin-film transistor, accuracy at the time of detecting a change in electrical characteristics of the thin-film transistor is improved. This biosensor (10) comprises a substrate (16), a thin-film transistor (12), a region (32), and a reference electrode (38). The thin-film transistor is of the bottom gate type, and is formed on the substrate. As viewed from the normal direction to the substrate, the region is formed in a channel layer (22) of the thin-film transistor. A biologically derived substance (30) that is present in a solution (28) adheres to said region. As viewed from the normal direction to the substrate, the reference electrode is formed in a position that does not overlap said region. The reference electrode comes into contact with the solution. |
