Patent ID: 7961919
Filing Date: 2011-06-14
Classification: H01L,H03F

Abstract:
1. An imaging device for sensing an image of an object, the imaging device comprising: a negative feedback amplifier; a substrate; a sense electrode disposed above the substrate; a couple electrode disposed above the substrate; an insulation protection layer covering the sense electrode and the couple electrode, wherein the sense electrode and the object form a sense capacitor, the couple electrode and the object form a couple capacitor, a negative input terminal of the negative feedback amplifier is directly electrically connected to the sense electrode, and the couple electrode is directly electrically connected to one of a signal output terminal of the negative feedback amplifier and a signal input terminal of the imaging device; and a reference electrode disposed between the substrate and the sense electrode, wherein: a reference capacitor is formed between the sense electrode and the reference electrode, and the reference electrode is disposed below the sense electrode; the couple electrode is directly electrically connected to the signal output terminal of the negative feedback amplifier; and the reference electrode is directly electrically connected to the signal input terminal.