公开(公告)号：US20240329165A1

公开(公告)日：2024-10-03

申请号：US18598761

申请日：2024-03-07

Applicant: TDK CORPORATION

Inventor： Takekazu YAMANE ,  Tetsuya SHIBATA ,  Weihao ZHANG ,  Hideaki FUKUZAWA

IPC: G01R33/09 ,  G01R33/00 ,  H10N50/10 ,  H10N50/85

CPC classification number: G01R33/091 ,  G01R33/0029 ,  G01R33/007 ,  G01R33/093 ,  G01R33/096 ,  H10N50/10 ,  H10N50/85 ,  G01R33/098

Abstract: This optical detection device includes a first photoelectric conversion element that outputs a first output, and a second photoelectric conversion element that outputs a second output, and is configured to combine a first signal caused by the first output with a second signal caused by the second output, in a state where a first condition and a second condition are satisfied. The first condition is a condition that an absolute value of an amount of change until the first signal reaches a peak is different from an absolute value of an amount of change until the second signal reaches a peak, and the second condition is a condition that a sign of the amount of change until the first signal reaches the peak is different from a sign of the amount of change until the second signal reaches the peak.

公开(公告)号：US20240332323A1

公开(公告)日：2024-10-03

申请号：US18610629

申请日：2024-03-20

Applicant: TDK Corporation

Inventor： Takekazu YAMANE ,  Tetsuya SHIBATA ,  Takeshi NOJIRI ,  Weihao ZHANG ,  Hideaki FUKUZAWA

IPC: H01L27/144 ,  H01L31/02 ,  H01L31/032

CPC classification number: H01L27/1443 ,  H01L31/02005 ,  H01L31/032

Abstract: An optical detection device includes first photoelectric conversion element that outputs first output when first photoelectric conversion element is irradiated with light pulse, and second photoelectric conversion element that outputs second output when second photoelectric conversion element is irradiated with light pulse. The optical detection device is configured to combine first signal caused by first output and second signal caused by second output when first photoelectric conversion element and second photoelectric conversion element are irradiated with same light pulse each other, in a state where first condition and second condition are satisfied. The first condition is condition that time position of peak of first signal is different from time position of peak of second signal. The second condition is condition that sign of amount of change until the first signal reaches the peak is different from a sign of the amount of change until the second signal reaches the peak.