The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2025
Filed:
Jan. 31, 2022
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Hideki Naganuma, Kanagawa, JP;
Takuya Toyofuku, Kanagawa, JP;
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
To improve the image quality in a solid-state imaging element that performs differential amplification. Each of a plurality of reference pixels is provided with a reference-side amplifier transistor that supplies a reference current according to a predetermined reference potential. Each of a plurality of readout pixel circuits is provided with a readout-side amplifier transistor that supplies from a drain to a source a signal current according to a difference between a potential of a gate and the reference potential. Further, in a potential difference generation unit, a plurality of source follower transistors are arranged for each of columns of the readout pixel circuits, each source follower transistor controlling a potential difference between the gate and the drain to a predetermined value when the potential of the gate and the reference potential are initialized.