公开(公告)号：US20240412693A1

公开(公告)日：2024-12-12

申请号：US18809281

申请日：2024-08-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： WONJUN LEE ,  CHOLHO KIM ,  MIHYEON JO

IPC: G09G3/3233 ,  G06V40/13

Abstract: A display device includes a plurality of pixels, each of which includes a light emitting element and a pixel driving circuit and a plurality of sensors, each of which includes a light receiving element and a sensor driving circuit. The sensor driving circuit includes a first reset transistor, a second reset transistor, a sensing capacitor, an amplification transistor, and an output transistor. The first reset transistor includes a first electrode receiving a reset voltage, a second electrode connected to a first sensing node, and a third electrode receiving a reset control signal. The second reset transistor includes a first electrode receiving the reset voltage, a second electrode connected to a second sensing node, and a third electrode receiving the reset control signal. The sensing capacitor is positioned between the first sensing node and the second sensing node.

公开(公告)号：US20230215365A1

公开(公告)日：2023-07-06

申请号：US18085260

申请日：2022-12-20

Applicant: Samsung Display Co., Ltd.

Inventor： WONJUN LEE ,  CHOLHO KIM ,  MIHYEON JO

IPC: G09G3/3233 ,  G06V40/13

CPC classification number: G09G3/3233 ,  G06V40/1318 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2300/0426 ,  G09G2354/00

Abstract: A display device includes a plurality of pixels, each of which includes a light emitting element and a pixel driving circuit and a plurality of sensors, each of which includes a light receiving element and a sensor driving circuit. The sensor driving circuit includes a first reset transistor, a second reset transistor, a sensing capacitor, an amplification transistor, and an output transistor. The first reset transistor includes a first electrode receiving a reset voltage, a second electrode connected to a first sensing node, and a third electrode receiving a reset control signal. The second reset transistor includes a first electrode receiving the reset voltage, a second electrode connected to a second sensing node, and a third electrode receiving the reset control signal. The sensing capacitor is positioned between the first sensing node and the second sensing node.