公开(公告)号：US20240233435A9

公开(公告)日：2024-07-11

申请号：US18374547

申请日：2023-09-28

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun Dae LEE ,  Il Nam KIM ,  Hyoung Wook JANG ,  Kang Bin JO ,  Go Eun CHA ,  Hee Chul HWANG

IPC: G06V40/13 ,  G06F1/16 ,  G06V40/12

CPC classification number: G06V40/1318 ,  G06F1/1643 ,  G06V40/1341 ,  G06V40/1365 ,  G06V2201/07

Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.

公开(公告)号：US20210142029A1

公开(公告)日：2021-05-13

申请号：US16927622

申请日：2020-07-13

Applicant: Samsung Display Co., Ltd.

Inventor： Seung Hyun MOON ,  Yun Ho KIM ,  Jin Oh KWAG ,  Won Sang PARK ,  Bong Hyun YOU ,  Keum Dong JUNG ,  Chul KIM ,  Jun Hee MOON ,  Deok Hwa WOO ,  Hee Chul HWANG

IPC: G06K9/00

Abstract: A display device includes a display panel including a plurality of pixels configured to display an image, a photo sensor on one surface of the display panel to sense light, and a fingerprint detector configured to control a fake determination image pattern of a fingerprint sensing area of the display panel configured to sense a fingerprint, and to perform fingerprint authentication and fake fingerprint determination, based on a sensing signal supplied from the photo sensor.

公开(公告)号：US20210125577A1

公开(公告)日：2021-04-29

申请号：US16928463

申请日：2020-07-14

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Ha HONG ,  Dong Joon KWAG ,  Hyung Jin KIM ,  Ji-Eun PARK ,  Hye-Sang PARK ,  Hyun Seuk YOO ,  Hee Chul HWANG

IPC: G09G5/02

Abstract: In a method of generating compensation data for a display device, first color, second color, and third color compensation value sets may be obtained by capturing first color, second color, and third color images displayed by the display device, respectively, white, first color, second color, and third color loading luminances may be obtained by capturing white, first color, second color, and third color loading patterns displayed by the display device, respectively, first color, second color, and third color scale factors may be calculated by dividing a luminance decrease ratio of the white loading luminance by luminance decrease ratios of the first color, second color, and third color loading luminances, respectively, and the first color, second color, and third color compensation value sets and the first color, second color, and third color scale factors may be stored in the display device.

公开(公告)号：US20250022308A1

公开(公告)日：2025-01-16

申请号：US18901115

申请日：2024-09-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Il Nam KIM ,  Seung Hyun MOON ,  Dong Wook YANG ,  Hyun Dae LEE ,  Kang Bin JO ,  Go Eun CHA ,  Hee Chul HWANG

IPC: G06V40/13 ,  G09G3/3233 ,  H10K39/34 ,  H10K59/131

Abstract: A display device including: scan lines including first and second scan lines; pixels connected to the scan lines; photo sensors connected to some of the scan lines, the photo sensors including a first photo sensor connected to the first scan line and a readout line, and a second photo sensor connected to the second scan line and the readout line; a scan driver to provide scan signals to the scan lines; and a readout circuit to receive, through the readout line, detection signals which are outputted from the photo sensors in response to the scan signals, wherein, while the scan signals are provided to the first and second scan lines, the readout circuit samples a detection signal of one of the first photo sensor and the second photo sensor without sampling a detection signal of the other one of the first photo sensor and the second photo sensor.

公开(公告)号：US20150049958A1

公开(公告)日：2015-02-19

申请号：US14454246

申请日：2014-08-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hassan KAMAL ,  Hee Chul HWANG

IPC: G06T5/00

CPC classification number: G09G3/2044 ,  G09G3/28 ,  G09G3/3208 ,  G09G3/3666 ,  G09G2300/0439 ,  G09G2300/0452 ,  G09G2320/0228 ,  G09G2320/0285

Abstract: A method for detecting noise includes determining whether a data value of a candidate pixel in a predetermined region of an image matches a first dynamic false contour (DFC) candidate value, determining whether a data value of at least one pixel adjacent to the candidate pixel matches a second DFC candidate value, and changing the data value of the candidate pixel the prior two determinations. The data value of the candidate pixel may be changed to a value in a lookup table. The first and second DFC candidate values may also be stored in one or more lookup tables.

Abstract translation: 一种用于检测噪声的方法包括确定图像的预定区域中的候选像素的数据值是否匹配第一动态假轮廓（DFC）候选值，确定与候选像素相邻的至少一个像素的数据值是否匹配 第二DFC候选值，并且改变先前两次确定的候选像素的数据值。 可以将候选像素的数据值改变为查找表中的值。 第一和第二DFC候选值也可以存储在一个或多个查找表中。

公开(公告)号：US20240161684A1

公开(公告)日：2024-05-16

申请号：US18387807

申请日：2023-11-07

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Dae LEE ,  Kang Bin JO ,  Il Nam KIM ,  Go Eun CHA ,  Hee Chul HWANG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0861 ,  G09G2310/061 ,  G09G2310/08

Abstract: A display device includes: a display panel; an emission driver; a scan driver; and a timing controller. The display panel includes light emitting pixels and photosensitive pixels, where the photosensitive pixels are operated in an initialization period, a light exposure period and a sensing period. The emission driver supplies emission control signals to emission control lines connected to the light emitting pixels, based on an emission start signal. The scan driver supplies scan signals to scan lines connected to the light emitting pixels and the photosensitive pixels, based on a scan start signal. The timing controller generates the emission start signal having a single pulse of a gate-off level and the scan start signal having a single pulse of a gate-on level in a last frame period among frame periods corresponding to the light exposure period and in each of frame periods corresponding to the sensing period.

公开(公告)号：US20230402014A1

公开(公告)日：2023-12-14

申请号：US18191765

申请日：2023-03-28

Applicant: Samsung Display Co., LTD.

Inventor： Il Nam KIM ,  Hyun Dae LEE ,  Kang Bin JO ,  Go Eun CHA ,  Hee Chul HWANG

IPC: G09G3/3266 ,  G06V40/13 ,  G06F3/041

CPC classification number: G09G3/3266 ,  G06V40/1318 ,  G06F3/04184 ,  G09G2360/14 ,  G09G2354/00 ,  G09G2310/061

Abstract: A display device includes: a display panel; a scan driver to provide scan signals to scan lines; an emission driver to provide emission control signals to emission control lines; and a readout circuit to receive a sensing signal from a readout line. The display panel includes: a first pixel in a first row, and connected to a first sub-scan line from among the scan lines, and a first emission control line; a first photo sensor in the first row, and connected to the first sub-scan line, a reset control line, and the readout line; a second pixel in a second row, and connected to a second sub-scan line from among the scan lines, and a second emission control line; and a second photo sensor in the second row, and connected to the second sub-scan line, a third emission control line, and the readout line.

公开(公告)号：US20220058254A1

公开(公告)日：2022-02-24

申请号：US17520699

申请日：2021-11-07

Applicant: Samsung Display Co., Ltd.

Inventor： Won Sang PARK ,  Jin Oh KWAG ,  ILNAM KIM ,  Ji Hun RYU ,  Seung Hyun MOON ,  Bong Hyun YOU ,  Jong Hyun LEE ,  Hee Chul HWANG

IPC: G06F21/32 ,  G06F3/042 ,  G06K9/00

Abstract: A display device including a fingerprint sensor including a first layer having at least one photo sensor to generate a fingerprint image corresponding to reflected light from a fingerprint contact surface, light emitting elements to transmit light reflected by the fingerprint, and a second layer including pin holes to allow reflected light to be incident upon the at least one photo sensor; and a fingerprint detector to receive the fingerprint image from the fingerprint sensor, to extract a first image corresponding to a first region of the fingerprint and a second image corresponding to a second region of the fingerprint, to compare the first and second images to determine similarity, and to perform fingerprint authentication, based on similarity determination, where the fingerprint first region is in contact with the fingerprint contact surface and the fingerprint second region is not in contact with the fingerprint contact surface.

公开(公告)号：US20210365661A1

公开(公告)日：2021-11-25

申请号：US17392179

申请日：2021-08-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Dae LEE ,  Seung Hyun MOON ,  Dong Wook YANG ,  Hee Chul HWANG ,  Deok Hwa WOO ,  Young Eun LEE

IPC: G06K9/00 ,  G06T3/40

Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.

公开(公告)号：US20240135744A1

公开(公告)日：2024-04-25

申请号：US18374547

申请日：2023-09-27

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun Dae LEE ,  Il Nam KIM ,  Hyoung Wook JANG ,  Kang Bin JO ,  Go Eun CHA ,  Hee Chul HWANG

IPC: G06V40/13 ,  G06F1/16 ,  G06V40/12

CPC classification number: G06V40/1318 ,  G06F1/1643 ,  G06V40/1341 ,  G06V40/1365 ,  G06V2201/07

Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.