Field effect transistor for detecting ionic material and...

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal

Reexamination Certificate

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C257S225000, C257S253000, C257SE29325

Reexamination Certificate

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08035175

ABSTRACT:
A field effect transistor for detecting ionic material and a method of detecting ionic material using the field effect transistor. The field effect transistor for detecting ionic material includes a substrate formed of a semiconductor material, a source region and a drain region spaced apart from each other in the substrate and doped with an opposite conductivity type to that of the substrate, a channel region interposed between the source region and the drain region, an insulating layer disposed on the channel region and formed of an electrically insulating material, a first reference electrode disposed at an edge of the upper portion of the insulating layer and a second reference electrode disposed to be spaced apart from the insulating layer.

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