发明名称 METHOD OF MANUFACTURING A CAPACITIVE HUMIDITY SENSOR
摘要 This method comprises the following steps, which are compatible with thin-film technology: forming a bottom electrode (2) on an insulating substrate (1), depositing a humidity-sensitive polymer layer (5) of uniform thickness on the bottom electrode (2) leaving contact areas (3a, 3b) uncovered, activating surface bonds of the polymer layer (5), applying a colloidal dispersion of SiO2 or Al2O3 particles (6) of uniform grain size as a thin layer to the polymer layer (5) and subsequently drying it, depositing a cover electrode (7) on the particles (6) still evenly distributed on the polymer layer (5) after the drying of the dispersion, and removing the particles (6) together with the portions of the cover electrode (7) overlying them.
申请公布号 CA2048904(C) 申请公布日期 1994.09.13
申请号 CA19912048904 申请日期 1991.08.09
申请人 ENDRESS U. HAUSER GMBH U. CO. 发明人 HEGNER, FRANK;KALLFASS, TRAUGOTT
分类号 G01N27/22;(IPC1-7):G01N27/22 主分类号 G01N27/22
代理机构 代理人
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