Patent ID: 9714914
Date: 2017-07-25
CPC Classifications: B82Y,G01N

Claim:
1. An integrated chip having an integrated bio-sensor, comprising: a sensing device disposed within a semiconductor substrate; a dielectric structure disposed onto a first side of the semiconductor substrate and having an opening that overlies the sensing device, wherein the opening has a first width; and one or more sensing well spacers confined within the opening and arranged on sidewalls of the opening, wherein a second opening is arranged between sidewalls of the one or more sensing well spacers and extends through the one or more sensing well spacers to define a sensing well having a second width that is smaller than the first width; and wherein a high-k dielectric layer is disposed within the sensing well and is laterally between the one or more sensing well spacers and the dielectric structure and vertically between the one or more sensing well spacers and the sensing device.