Patent ID: 7985613
Filing Date: 2011-07-26
Classification: H01L

Abstract:
1. A method of manufacturing a back side illumination image sensor, comprising: forming an ion implantation layer in a front side of a first substrate; forming an isolation area on the front side of the first substrate to define a pixel area; forming a photodetector and a readout circuit in the pixel area; forming an interlayer dielectric layer and a metal line on the front side of the first substrate; bonding a second substrate with the front side of the first substrate having the metal line; removing a lower portion of the first substrate on a basis of the ion implantation layer; performing an annealing process on a back side of the first substrate, wherein the back side of the first substrate is opposite the front side of the first substrate; and forming a microlens over the photodetector of the back side of the first substrate.