Patent ID: 6806470
Filing Date: 2004-10-19
Classification: G01J,H01L

Abstract:
A method of manufacturing an infrared sensor, comprising:embedding a silicon oxide layer in a substrate comprising a single crystalline silicon supporting substrate, a silicon oxide film layer formed on the single crystalline silicon supporting substrate and a single crystalline silicon layer formed on the silicon oxide film layer, over a predetermined region of the single crystalline silicon layer; forming a thermoelectric converter pn junction for an infrared detection pixel in the single crystalline silicon layer; forming a supporting beam line including a U-shaped electric conductor on the silicon oxide layer while forming a gate electrode of a MOS transistor having an electric conductor with U-shaped cross section, the MOS transistor being included in a peripheral circuit on the single crystalline silicon layer; forming an infrared absorption layer on the single crystalline silicon layer; and forming a hole by etching for isolating the infrared detection pixel of the substrate from the substrate and suspending the infrared detection pixel within the hole by the supporting beam line.