公开(公告)号：US20230301125A1

公开(公告)日：2023-09-21

申请号：US18121181

申请日：2023-03-14

Applicant: Japan Display Inc.

Inventor： Makoto HAYASHI ,  Hirofumi KATO ,  Yoshitaka KOJIMA ,  Yuta HAGA ,  Ayato KITAMURA ,  Yoshiyuki TERADA

IPC: H10K39/00 ,  G06V40/13 ,  G06V10/147

CPC classification number: H10K39/601 ,  G06V40/13 ,  G06V10/147

Abstract: According to an aspect, a detection device includes: a light source configured to emit light to an object to be detected; a plurality of photodiodes arranged in a detection area; one or more detection circuits; and a coupling switching circuit configured to switch coupling of one or more of the photodiodes to one or more of the detection circuits. The coupling switching circuit is configured to change the number of the detection circuits coupled to one or more of the photodiodes based on an output value from one or more of the photodiodes.

公开(公告)号：US20250008759A1

公开(公告)日：2025-01-02

申请号：US18883461

申请日：2024-09-12

Applicant: Japan Display Inc.

Inventor： Makoto HAYASHI ,  Hirofumi KATO ,  Yoshitaka KOJIMA ,  Yuta HAGA ,  Ayato KITAMURA ,  Yoshiyuki TERADA

IPC: H10K39/00 ,  A61B5/024 ,  A61B5/1455

Abstract: According to an aspect, a detection device includes: a light source configured to emit light to an object to be detected; a plurality of photodiodes that each include a sensor electrode and an organic semiconductor layer and are arranged in a detection area; and one or a plurality of detection circuits coupled to the photodiodes. The photodiodes includes a first photodiode and a second photodiode that has a shorter distance from the light source than that of the first photodiode. A light-receiving area of the first photodiode is larger than a light-receiving area of the second photodiode.

公开(公告)号：US20230200690A1

公开(公告)日：2023-06-29

申请号：US18066423

申请日：2022-12-15

Applicant: Japan Display Inc.

Inventor： Yuta HAGA ,  Ayato KITAMURA

IPC: A61B5/1455

CPC classification number: A61B5/1455

Abstract: According to an aspect, a detection device includes: a sensor having a detection area divided into a plurality of partial detection areas; and a detector configured to extract, from among the partial detection areas, one or more partial detection areas in each of which a signal strength of data satisfying a predetermined condition is acquired, and acquire biometric data on an object to be detected based on detection signals detected in a biometric data acquisition area including the extracted one or more partial detection areas.

公开(公告)号：US20230015361A1

公开(公告)日：2023-01-19

申请号：US17951296

申请日：2022-09-23

Applicant: Japan Display Inc.

Inventor： Hirofumi KATO ,  Ayato KITAMURA

IPC: G06F3/042 ,  G06V40/13 ,  G09G3/36

Abstract: A detection device includes: optical sensors; switching elements, gate lines, and signal lines corresponding to the optical sensors; a detection circuit that is supplied with signals from the optical sensors through the signal lines; and a signal line selection circuit for switching a coupling state between the signal lines and the detection circuit. A drive signal is supplied to the gate lines row by row to bring the switching elements belonging to a predetermined row into a coupled state. The signal line selection circuit couples the signal lines to the detection circuit column by column in a predetermined order in a reading period of the predetermined row. A reset potential is supplied to the optical sensors and the signal lines belonging to the predetermined row after completion of the reading period of the predetermined row and before start of the reading period of a row next to the predetermined row.

公开(公告)号：US20210383767A1

公开(公告)日：2021-12-09

申请号：US17408587

申请日：2021-08-23

Applicant: Japan Display Inc.

Inventor： Kazunari TOMIZAWA ,  Ayato KITAMURA

IPC: G09G3/36 ,  G09G3/3208 ,  G09G3/20

Abstract: A display device includes: a display panel including pixels for displaying a first color, a second color, a third color, and a fourth color; and a signal processor configured to convert an image signal including gradation data of the first to third colors into a first signal including gradation data of the first to third colors and a second signal including a gradation datum of the fourth color and output the first and second signals. When the gradation data of the image signal have the same value, output signals from the signal processor include an output signal in which the gradation data of the first signal and the gradation datum of the second signal have the same value and an output signal in which the gradation data of the first signal and the gradation datum of the second signal have values different from each other by 1.

公开(公告)号：US20230280865A1

公开(公告)日：2023-09-07

申请号：US18196252

申请日：2023-05-11

Applicant: Japan Display Inc.

Inventor： Hirofumi KATO ,  Ayato KITAMURA

IPC: G06F3/042 ,  G06V40/13 ,  G09G3/36

CPC classification number: G06F3/0421 ,  G06V40/13 ,  G09G3/3611

Abstract: A detection device includes: optical sensors; switching elements, gate lines, and signal lines corresponding to the optical sensors; a detection circuit that is supplied with signals from the optical sensors through the signal lines; and a signal line selection circuit for switching a coupling state between the signal lines and the detection circuit. A drive signal is supplied to the gate lines row by row to bring the switching elements belonging to a predetermined row into a coupled state. The signal line selection circuit couples the signal lines to the detection circuit column by column in a predetermined order in a reading period of the predetermined row. A reset potential is supplied to the optical sensors and the signal lines belonging to the predetermined row after completion of the reading period of the predetermined row and before start of the reading period of a row next to the predetermined row.

公开(公告)号：US20230240567A1

公开(公告)日：2023-08-03

申请号：US18102935

申请日：2023-01-30

Applicant: Japan Display Inc.

Inventor： Ayato KITAMURA ,  Yuta HAGA

IPC: A61B5/1455

CPC classification number: A61B5/14552 ,  A61B2562/043

Abstract: According to an aspect, a detection device includes: a first light source configured to emit light having a predetermined wavelength; a second light source configured to emit light having a wavelength different from that of light emitted by the first light source; optical sensors provided at different locations from each other and configured to measure the light emitted by the first light source and the second light source; a light quantity controller configured to set a light quantity of at least one of the first light source or the second light source so that a measurement value based on at least one of detection values of the optical sensors reaches a predetermined target value; and a biometric information detector configured to, when the measurement value has reached the predetermined target value, detect information on a living body with the optical sensors using the set light quantity for detecting biometric information.