Patent ID: 9059066
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. A method of manufacturing a complementary metal-oxide semiconductor (CMOS) image sensor (CIS), the method comprising: preparing a substrate having a first surface and a second surface opposite to the first surface such that the substrate includes: forming an insulating interlayer on the first surface of the substrate such that the insulating interlayer includes metal wirings electrically connected to the photoelectric transformation element; forming a light blocking layer on the peripheral circuit region of the second surface of the substrate such that the light blocking layer exposes the APS array region and includes a plurality of metal wiring patterns spaced apart from one another to form at least one drainage path along a boundary region between the APS array region and the peripheral circuit region; forming a color filter layer on the second surface of the substrate to cover the APS array region and the light blocking layer; and forming a microlens on the color filter layer on the APS array region.