Liquid detecting device, liquid container and method of manufacturing liquid detecting device

摘要

A liquid detecting device ( 1200 ) including: a unit base ( 1210 ), provided with a recessed portion ( 1211 ) on an upper face thereof and containing a first material; a sensor base ( 1220 ), accommodated in the recessed portion and containing a second material different from the first material; a sensor chip ( 1230 ), mounted on an upper face of the sensor base ( 1220 ) and having a sensor cavity ( 1232 ) for receiving a liquid as a detection target, in which a lower face of the sensor cavity ( 1232 ) is formed to be opened for allowing the liquid to flow therein and an upper face thereof is closed by a vibration plate ( 1233 ) and provided with a piezoelectric element ( 1234 ) mounted on an upper face of the vibration plate ( 1233 ); an adhesive layer ( 1242 ), formed on the upper face of the sensor base and fixing and sealing the sensor chip ( 1230 ) and the sensor base ( 1220 ) to each other; and an adhesive film ( 1240 ), which fixes and seals the sensor base ( 1220 ) and the unit base ( 1210 ) to each other and of which an inner peripheral portion is adhered to the upper face of the sensor base ( 1220 ) and an outer peripheral portion is adhered to the upper face of the unit base ( 1210 ).