Patent ID: 7601557
Filing Date: 2009-10-13
Classification: H01L

Abstract:
1. A method of manufacturing an image sensor, comprising: providing a substrate defined with unit pixels; forming a seed microlens on the substrate, wherein a top surface of the seed microlens comprises a height difference between a first region of the seed microlens corresponding to one of the unit pixels and a second region of the seed microlens corresponding to an area between adjacent unit pixels; and forming a microlens by performing a blanket etching process on the seed microlens, wherein forming the seed microlens comprises: forming an inorganic layer on the substrate; selectively forming an ion implantation region in a portion of the inorganic layer corresponding to the area between adjacent unit pixels, wherein the forming of the ion implantation region comprises: removing the ion implantation region to form a lens gap hole in the inorganic layer, wherein the lens gap hole creates the height difference of the top surface of the seed microlens.