公开(公告)号：US12260046B2

公开(公告)日：2025-03-25

申请号：US18341729

申请日：2023-06-26

Applicant: Samsung Display Co., LTD.

Inventor： Jun Young Ko ,  Tae Hyeon Yang ,  Han Su Cho ,  Tae Joon Kim ,  Hyun Wook Cho ,  Jae Woo Choi

IPC: G06F3/041 ,  G09G3/3275

Abstract: A driving circuit includes: a display driver to generate a horizontal synchronization signal and a vertical synchronization signal according to a first clock signal of a first oscillator; a sensor driver to generate a touch signal according to a second clock signal of a second oscillator; and a determination circuit to detect a cycle of at least one of the horizontal synchronization signal or the vertical synchronization signal according to the second clock signal, and output a detection signal when the cycle is out of a range. The determination circuit is a part of the display driver or the sensor driver.

公开(公告)号：US11580722B2

公开(公告)日：2023-02-14

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: G06K9/20 ,  G06V10/98 ,  G06V10/141 ,  G06V10/145 ,  G06V10/147 ,  G06V40/13 ,  G09G3/3208

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：US20210158069A1

公开(公告)日：2021-05-27

申请号：US17009030

申请日：2020-09-01

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G06K9/03 ,  G06K9/00 ,  G06K9/20

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：US20210048339A1

公开(公告)日：2021-02-18

申请号：US16989782

申请日：2020-08-10

Applicant: Samsung Display Co., LTD.

Inventor： Kee Yong Kim ,  Chang Yeob Kim ,  Jung Hun Sin ,  Han Su Cho

IPC: G01H11/08 ,  H04R29/00 ,  H04N17/00 ,  G06F1/16 ,  G06F3/16 ,  G10K9/122

Abstract: A sound inspection method of a display device and a sound inspection device including preparing a display device including a display panel and a sound generator disposed on a first surface of the display panel, placing a vibration sensor on a second surface opposite to the first surface of the display panel, vibrating the sound generator at a first reference frequency, vibrating the display panel, and then sensing a vibration of the vibration sensor that vibrates along with a vibration of the display panel; and determining whether a frequency of the vibration of the vibration sensor is included in a first threshold frequency region.

公开(公告)号：US11709094B2

公开(公告)日：2023-07-25

申请号：US16989782

申请日：2020-08-10

Applicant: Samsung Display Co., LTD.

Inventor： Kee Yong Kim ,  Chang Yeob Kim ,  Jung Hun Sin ,  Han Su Cho

IPC: G06F3/16 ,  G01H11/08 ,  H04R29/00 ,  H04N17/00 ,  G10K9/122 ,  G06F1/16

CPC classification number: G01H11/08 ,  G06F1/1605 ,  G06F3/16 ,  G10K9/122 ,  H04N17/004 ,  H04R29/001 ,  H04N2017/006

Abstract: A sound inspection method of a display device and a sound inspection device including preparing a display device including a display panel and a sound generator disposed on a first surface of the display panel, placing a vibration sensor on a second surface opposite to the first surface of the display panel, vibrating the sound generator at a first reference frequency, vibrating the display panel, and then sensing a vibration of the vibration sensor that vibrates along with a vibration of the display panel; and determining whether a frequency of the vibration of the vibration sensor is included in a first threshold frequency region.

公开(公告)号：US11314978B2

公开(公告)日：2022-04-26

申请号：US17009030

申请日：2020-09-01

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G06K9/20 ,  G06K9/03 ,  G06K9/00 ,  G09G3/3208

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：US12087192B1

公开(公告)日：2024-09-10

申请号：US18469768

申请日：2023-09-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tae Hyeon Yang ,  Jun Young Ko ,  Han Su Cho ,  Tae Joon Kim ,  Jae Woo Choi

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/00 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G06F3/0412 ,  G06F3/04166 ,  G06F3/0418 ,  G06F3/0446 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2330/12

Abstract: A display device includes a touch panel and a display panel. The touch panel outputs touch sensing signals. At least one of a plurality of touch sensing signals is converted from a time domain to a frequency domain, and then information on a thickness of a common electrode is detected based on a peak of the converted touch sensing signal. As a result, it is possible to inspect whether the common electrode is formed with a uniform thickness without destroying the display device.

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.