Image pickup device, focus detection device, image pickup apparatus, method for manufacturing image pickup device, method for manufacturing focus detection device, and method for manufacturing image pickup apparatus

A method for manufacturing an image pickup device, comprising:

• providing a pixel unit comprising first pixels and second pixels;
• providing a first photoelectric conversion unit configured to generate charges corresponding to light incident upon each of the first pixels;
• providing a first control unit configured to control the first photoelectric conversion unit;
• providing a second photoelectric conversion unit configured to generate charges corresponding to light incident upon each of the second pixels, the second photoelectric conversion unit being smaller than the first photoelectric conversion unit;
• and
• providing a second control unit configured to control the second photoelectric conversion unit, the second control unit being arranged in a space which is generated due to a size difference between the first photoelectric conversion unit and the second photoelectric conversion unit.

An image pickup device comprising:

• a pixel unit comprising first pixels and second pixels;
• first photoelectric conversion means for generating charges corresponding to light incident upon each of the first pixels;
• first control means for controlling the first photoelectric conversion means;
• second photoelectric conversion means for generating charges corresponding to light incident upon each of the second pixels, the second photoelectric conversion means being smaller than the first photoelectric conversion means;
• and
• second control unit means for controlling the second photoelectric conversion means, the second control means being arranged in a space which is generated due to a size difference between the first photoelectric conversion means and the second photoelectric conversion means.