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Patent Searching and Data


Title:
HUMIDITY DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/107282
Kind Code:
A1
Abstract:
One embodiment of the present invention is a humidity detection device comprising a humidity detection unit and a protection section covering the humidity detection unit, the humidity detection unit comprising a first electrode, a second electrode having a moisture sensing hole, and a moisture sensing layer interposed between the first electrode and the second electrode. The moisture permeability of the protection section is higher than the moisture permeability of the moisture sensing layer, and the protection section is provided beyond a range in which the electric field around the moisture sensing hole has a substantial impact on changes in electrical characteristics between the first electrode and the second electrode, and therefore a decrease in detection precision can be suppressed while simplifying a configuration for preventing the adherence of foreign matter such as dust to the moisture sensing layer.

Inventors:
OKAWA, Hisanobu (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
YANAGI, Shuji (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
Application Number:
JP2018/043259
Publication Date:
June 06, 2019
Filing Date:
November 22, 2018
Export Citation:
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Assignee:
ALPS ALPINE CO., LTD. (1-7 Yukigaya-otsukamachi, Ota-ku Tokyo, 01, 〒1458501, JP)
International Classes:
G01N27/22; G01N27/12
Attorney, Agent or Firm:
OKUBO, Katsuyuki (7th Floor, SEIBUNDO Building 4-3-26, Kudan-kita, Chiyoda-k, Tokyo 73, 〒1020073, JP)
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