| 摘要 |
The invention relates to a sensor unit for measuring structures and properties by the surface of an object of organic tissue, especially a fingerprint sensor, the sensor comprising: a contact surface adapted to have mechanical contact with said object, a first dielectric layer made from a dielectric material having a chosen thickness, a first conductor layer including at least one shielding electrode essentially covering an area of said dielectric layer facing said contact surface, the at least one shielding electrode surrounding at least one essentially non-conductive aperture (14,15) defining a sensing region having predetermined dimensions, a second conductor layer (11) separated from said first conductor layer by said first dielectric layer and comprising a number of conductive wires extending at least partially under said at least one aperture and having a direction essentially. |
