公开(公告)号：US12014566B2

公开(公告)日：2024-06-18

申请号：US18132262

申请日：2023-04-07

Applicant: Samsung Display Co., Ltd.

Inventor： Kee Yong Kim ,  Jung Hun Sin ,  Young Sik Kim ,  Tae Joon Kim ,  Hee Woong Park ,  Sang Wook Yoo

IPC: G06V40/13 ,  G06V40/12

CPC classification number: G06V40/13 ,  G06V40/1347 ,  G06V40/1365

Abstract: Provided is a fingerprint authentication device comprising a biometric sensor that senses biometric information to generate a sensing signal; an image processor that extracts a calibration function based on calibration data and generates a fingerprint image based on the calibration function and the sensing signal; and an authenticator that performs fingerprint authentication by comparing the fingerprint image and registered fingerprint information. The calibration data includes information on a calibration coefficient of the calibration function.

公开(公告)号：US11551468B2

公开(公告)日：2023-01-10

申请号：US17365050

申请日：2021-07-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kee Yong Kim

IPC: G06V40/13 ,  H04N5/235 ,  G06V40/12

Abstract: An input sensing device includes a display panel, a sensor pixel, and a fingerprint detector. The display panel displays a fingerprint detection pattern corresponding to a target object. The sensor pixel generates a sensing signal by detecting light reflected from the fingerprint detection pattern by the target object. The fingerprint detector detects a fingerprint for the target object based on the sensing signal, and changes an exposure time of the sensor pixel based on a size of the fingerprint detection pattern.

公开(公告)号：US20220230427A1

公开(公告)日：2022-07-21

申请号：US17713286

申请日：2022-04-05

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Mun Su KIM ,  Kee Yong Kim ,  Jung Hun Sin ,  Han Su Cho

IPC: G06V10/98 ,  G06V10/141 ,  G06V10/145 ,  G06V10/147 ,  G06V40/13

Abstract: Provided herein are a calibration method for a fingerprint sensor and a display device using the calibration method, where, in the calibration method for a fingerprint sensor, the fingerprint sensor includes a substrate, a light-blocking layer located on a first surface of the substrate and having openings formed in a light-blocking mask, a light-emitting element layer located on the light-blocking layer and having a plurality of light-emitting elements, and a sensor layer located on a second surface of the substrate and having a plurality of photosensors; and the calibration method includes generating calibration data through white calibration and dark calibration, and applying offsets to the plurality of photosensors using the calibration data.

公开(公告)号：US11055509B2

公开(公告)日：2021-07-06

申请号：US16672043

申请日：2019-11-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kee Yong Kim

IPC: G06K9/00

Abstract: A display device includes: a display portion that includes a plurality of pixels, and displays an image through light emitted from the plurality of pixels; a sensor that includes a plurality of light sensing pixels that receive light and acquires a first image when the display portion displays a test image that includes a marker; a memory that stores calibration image data for calibrating an image acquired by the sensor; and a sensor controller that calculates a movement amount of a marker in the first image and corrects or updates the calibration image data using the movement amount of the at least one marker.