Patent ID: 8823114

Claim:
A sensor device comprising: a sensor structure including a contact sensing surface that comes into direct contact with a detection target on one surface exposed outside and a sensor electrode that outputs an analog sensor signal upon sensing a change in the contact sensing surface at another surface side on an opposite side of the contact sensing surface; a semiconductor substrate including an embedded signal processing integrated circuit that processes the analog sensor signal; and a bonding layer interposed between said another surface of the sensor structure and the semiconductor substrate to bond the sensor structure and the semiconductor substrate together, wherein the sensor structure and the semiconductor substrate are stacked into a single chip with the sensor electrode and the integrated circuit placed opposite to each other with the bonding layer interposed therebetween, the sensor electrode and the integrated circuit are sealed inside the sensor device, and wherein the sensor electrode is connected to at least one of the following: a line portion of the sensor electrode that leads to an external bus and an electrode portion of the integrated circuit that leads to an external bus; wherein at least one external terminal of the signal processing integrated circuit is connected to at least one of the following: the line portion of the sensor electrode that leads to the external bus and the electrode portion of the integrated circuit that leads to the external bus; wherein the sensor electrode and the at least one external terminal of the signal processing integrated circuit are placed opposite to each other with the bonding layer interposed therebetween; and wherein the line portion of the sensor electrode that leads to the external bus and the electrode portion of the integrated circuit that leads to the external bus are formed on a back surface of the semiconductor substrate through a laterally inclined surface of the semiconductor substrate.