Patent ID: 8133754
Filing Date: 2012-03-13
Classification: H01L

Abstract:
1. A method for manufacturing an image sensor, the method comprising: forming a circuitry including a metal line on a first substrate; and forming a photodiode on the metal line, wherein the forming of the circuitry on the first substrate comprises: forming an electric junction region and a transistor on the first substrate; forming a first interlayer dielectric layer on the electric junction region and the transistor; forming a metal layer and a reflective layer on the first interlayer dielectric layer sequentially; forming a reflective layer pattern and a metal pattern connecting the electric junction region or the transistor by selectively etching the metal layer and the reflective layer; forming a second interlayer dielectric layer on the reflective layer pattern; forming a contact hole in the second interlayer dielectric layer and the reflective layer pattern; and forming a metal contact in the contact hole passing through the reflective layer pattern and the second interlayer dielectric layer, the metal contact contacting a lower surface of the photodiode.