公开(公告)号：US20210326572A1

公开(公告)日：2021-10-21

申请号：US17248888

申请日：2021-02-11

Applicant: Samsung Display Co., Ltd.

Inventor： Soongyu LEE ,  Jinwoo KIM ,  Kyowon KU ,  Youngsik KIM

IPC: G06K9/00 ,  H01L27/32

Abstract: A display device includes: a display unit configured to display an image; a fingerprint sensing unit on one surface of the display unit and comprising fingerprint sensing pixels configured to sense a fingerprint; and a readout circuit configured to receive a fingerprint sensing signal from the fingerprint sensing pixels, wherein the readout circuit is configured to generate and output a normal fingerprint image and a dry fingerprint image, which correspond to the fingerprint sensing signal, during a fingerprint registration mode.

公开(公告)号：US20210217358A1

公开(公告)日：2021-07-15

申请号：US17088583

申请日：2020-11-04

Applicant: Samsung Display Co., Ltd.

Inventor： Soongyu LEE ,  Kyowon KU ,  Youngsik KIM ,  Junghak KIM ,  Jinwoo KIM

IPC: G09G3/3208 ,  G06K9/00 ,  H01L27/32

Abstract: A method of driving a display device including driving a display panel including a sensing area defined above a fingerprint sensor in an initial mode, driving the sensing area in a first color pattern and a second color pattern having a color different from a color of the first color pattern, sensing a fingerprint through the fingerprint sensor that receives a light reflected by the fingerprint when the fingerprint is adjacent to the sensing area, determining whether the sensed fingerprint is a duplicate fingerprint, and performing a user authentication mode when the sensed fingerprint is a normal fingerprint. The first color pattern has a light transmittance higher than a light transmittance of the second color pattern.

公开(公告)号：US20230090283A1

公开(公告)日：2023-03-23

申请号：US17739356

申请日：2022-05-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jinwoo KIM ,  Soongyu LEE

IPC: G06F3/041 ,  G06F3/044

Abstract: A method for driving a display device includes operating an input sensing part in a direct sensing mode. The input sensing part includes first sensing electrodes connected to transmission lines and second sensing electrodes connected to the sensing lines. The input sensing part operates in a noise sensing mode and proximity sensing mode when a call mode is performed. The proximity sensing mode includes generation of a proximity sensing signal concerning proximity of a user to the display device. Noise sensed in the noise sensing mode is removed from the proximity sensing signal when the proximity sensing signal indicates the user is proximate. At least one of a voltage level of a drive signal, a number of simultaneous transmission lines to which the drive signal is simultaneously applied, or a frequency of the drive signal is differently set in the noise sensing mode as compared to the proximity sensing mode.