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:
May. 31, 2022
Filed:
Jun. 29, 2018
Brillnics Singapore Pte. Ltd., Singapore, SG;
Kazuya Mori, Tokyo, JP;
Isao Takayanagi, Tokyo, JP;
Shunsuke Tanaka, Tokyo, JP;
Toshinori Otaka, Tokyo, JP;
Naoto Yasuda, Tokyo, JP;
BRILLNICS SINGAPORE PTE. LTD., Singapore, SG;
Abstract
A pixel PXL includes a first photodiode PDSL and a second photodiode PSLS having different well capacities and responsivities, transfer transistors TGSL-Tr, TGLS-Tr for transferring the charges stored in the photodiodes to a floating diffusion FD, and a capacitance changing partfor changing the capacitance of the floating diffusion depending on a capacitance changing signal. The first well capacity of the first photodiode PDSL is smaller than the second well capacity of the second photodiode PDLS, and the first responsivity of the first photodiode PDSL is larger than the second responsivity of the second photodiode PDLS. With these configurations, it becomes possible to realize a widened dynamic range, prevent the read-out noise from affecting the performance, and eventually achieve improved image quality.