| 摘要 |
An apparatus (10) has a capacitive sensor electrode (22) and material (24) (e.g. graphene oxide ) configured to temporarily modify a capacitance of the capacitive sensor electrode during a period after a touch input has occurred. The electrical conductivity of the material may increases during the touch state and decreases during the post-touch state. The material may modify the capacitance response to a humidity change caused by touch input. The sensor may include a cover layer extending over the material, wherein the cover layer is water-permeable. A method includes detecting when a capacitance of a capacitive sensor electrode triggers a first threshold (T1, figure 2) or a second different threshold (T2, figure 2). |
