Patent ID: 9239309
Filing Date: 2016-01-19
CPC Classification: G01N

Claim Text:
1. A humidity sensor comprising: a humidity detention section including a pair of detection electrodes and a humidity-sensitive film, the detection electrodes facing each other on a humidity detection section formation surface of a substrate, the humidity-sensitive film covering the detection electrodes and a gap between the detection electrodes; a pad section as an external connection terminal, the pad section being spaced from the humidity detection section on the humidity detection section formation surface of the substrate and covered with a protection gel section under a condition where a bonding wire is connected to the pad section; and a dam section located between the humidity detection section and the pad section on the humidity detection section formation surface of the substrate to restrain the protection gel section from flowing from the pad section side to the humidity detection section side, wherein the dam section includes a dam wire and a dam humidity-sensitive film, the dam wire is made from the same material as the detection electrodes and located on the same surface as the detection electrodes, the dam humidity-sensitive film is made from the same material as the humidity-sensitive film and covers at least part of the dam wire, a first recess is formed on the dam section to receive a portion of the protection gel section in a case where the protection gel section flows to the dam section; and a second recess is formed at a location between the dam section and the humidity detection section to receive another portion of the protection gel section in a case where the protection gel section flows to the second recess formed at the location between the dam section and the humidity detection section.