Patent ID: 11942502
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A method for manufacturing a solid-state imaging device, the method comprising:
forming a photoelectric conversion portion and a transfer transistor in a first semiconductor substrate, the photoelectric conversion portion photoelectrically converting incident light, the transfer transistor transferring an electric charge of the photoelectric conversion portion;
bonding a front surface side of the first semiconductor substrate which is a wiring layer formation surface of the first semiconductor substrate to a back surface side of a second semiconductor substrate which is an opposite side of a wiring layer formation surface of the second semiconductor substrate;
forming a charge/voltage retention portion in the second semiconductor substrate after the bonding, the charge/voltage retention portion retaining the electric charge transferred by the transfer transistor or a voltage corresponding to the electric charge;
forming a through electrode that penetrates the second semiconductor substrate, and transmits the electric charge transferred from the transfer transistor or the voltage to the charge/voltage retention portion; and
forming the charge/voltage retention portion between the wiring layer formation surface of the first semiconductor substrate and the wiring layer formation surface of the second semiconductor substrate.