Patent ID: 7758733
Filing Date: 2010-07-20
Classification: C12Q,G01N

Abstract:
1. A method for fabricating a biosensor, comprising: depositing a sensing membrane on a substrate, wherein the sensing membrane is for detecting a pH value of a solution; forming a conductive line on the substrate; packaging the conductive line with the sensing membrane, wherein the conductive line serves as an external electrical contact point; partially packaging the substrate, the sensing membrane and the conductive line with a package material, to leave a first sensing region and a second sensing region; forming a sensing membrane for detecting a plurality of ammonium ions, on the second sensing region, wherein the formed sensing membrane serves as an ion-selecting and sensing region for detecting the ammonium ions; forming a first creatinine enzyme membrane, on the sensing membrane and the second sensing region, by a photo-polymerisation reaction; and connecting a readout circuit to the conductive line.