Patent ID: 7640798
Filing Date: 2010-01-05
Classification: G01F,G01N,H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a flow sensor having a first heater for detecting a flow rate of fluid; a humidity sensor for detecting a humidity of the fluid; a pad disposed on the substrate; a resin sealing member; and a polymer film for increasing adhesiveness between the semiconductor substrate and the resin sealing member, wherein the flow sensor and the humidity sensor are disposed on the semiconductor substrate, the flow sensor is disposed around the humidity sensor, the humidity sensor is disposed on an upstream side of the first heater, the humidity sensor and the flow sensor output detection signals through the pad, the pad is coupled with an external terminal at a connection portion, the resin sealing member covers a part of the substrate that includes the connection portion and does not include the humidity sensor and the flow sensor, the polymer film is partially disposed between the part of the substrate and the resin sealing member, the humidity sensor includes a pair of electrodes and a humidity sensitive film, the pair of electrodes is made of conductive material, and disposed on the substrate, the humidity sensitive film is disposed on the substrate and disposed between the pair of electrodes, the humidity sensitive film has a relative permittivity or an impedance, which is changeable in accordance with humidity change, and the humidity sensitive film and the polymer film are made of a same material.