Patent ID: 8501520
Filing Date: 2013-08-06
Classification: H01L

Abstract:
1. A method for manufacturing a solid-state image sensor, the method comprising: a first forming step of forming a charge storage region of a photoelectric converting unit by implanting a semiconductor substrate with ions of an impurity of a first conductivity type; a first heating step of heating the semiconductor substrate at a temperature of no less than 800° C. and no more than 1200° C. through rapid thermal annealing, after said first forming step; a second forming step of forming a surface region of the photoelectric converting unit by implanting the semiconductor substrate with ions of an impurity of a second conductivity type after said first heating step; a second heating step of heating the semiconductor substrate at a temperature of no less than 800° C. and no more than 1200° C. through rapid thermal annealing, after said second forming step; and a third forming step of forming an antireflection film that covers the photoelectric converting unit at a temperature of less than 800° C., after said second heating step, wherein enhanced diffusion is suppressed by said first and second heating steps being performed before said third forming step.