US 12,336,316 B2
Imaging device
Taiji Noda, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Jul. 8, 2022, as Appl. No. 17/811,319.
Application 17/811,319 is a continuation of application No. PCT/JP2020/040481, filed on Oct. 28, 2020.
Claims priority of application No. 2020-013415 (JP), filed on Jan. 30, 2020; and application No. 2020-160031 (JP), filed on Sep. 24, 2020.
Prior Publication US 2022/0344394 A1, Oct. 27, 2022
Int. Cl. H10D 84/83 (2025.01); H10F 39/00 (2025.01)
CPC H10F 39/80373 (2025.01) [H10F 39/809 (2025.01)] 20 Claims
OG exemplary drawing
 
1. An imaging device comprising:
a pixel region including an amplifying transistor that includes a first gate and that outputs a signal voltage corresponding to an amount of signal charge;
a first peripheral region including at least one first peripheral transistor including a second gate, the first peripheral region being located outside the pixel region; and
a semiconductor substrate provided with the amplifying transistor and the at least one first peripheral transistor, wherein
a gate length of the second gate of the at least one first peripheral transistor is shorter than a gate length of the first gate of the amplifying transistor, and
when at least one type of impurity that contributes to suppression of transient enhanced diffusion of a conductive impurity is defined as a first specific species, the at least one first peripheral transistor includes a first specific layer located in the semiconductor substrate, the first specific layer containing a conductive impurity and the first specific species.