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公开(公告)号：US20230316966A1
公开(公告)日：2023-10-05
申请号：US18086659
申请日：2022-12-22
发明人： Go Eun CHA , Il Nam KIM , Seung Hyun MOON , Dong Wook YANG , Hyun Dae LEE , Kang Bin JO
CPC分类号： G09G3/006 , G01R31/2879 , G06V40/13
摘要： A test system, a method of testing a display cell using the same, and a display device are provided. There is provided a test system comprising: a display cell including a pixel and a data line connected to the pixel, an optical sensor and a readout line connected to the optical sensor, and a signal selection unit for selectively connecting a test signal line to any one of the data line and the readout line; and a test member configured to apply a first test control signal to the signal selection unit in a data test mode and apply a second test control signal to the signal selection unit in a sensing test mode.
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公开(公告)号：US20210142029A1
公开(公告)日：2021-05-13
申请号：US16927622
申请日：2020-07-13
发明人： 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分类号： G06K9/00
摘要： 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.
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公开(公告)号：US20220058363A1
公开(公告)日：2022-02-24
申请号：US17338002
申请日：2021-06-03
发明人： Seung Hyun MOON , Dong Wook Yang , Go Eun Cha , Kyung Tea Park , Kang Bin Jo
摘要： A display device includes a display panel including a pinhole optical system and an optical sensor overlapping the pinhole optical system. A fingerprint detection method which detects a user's fingerprint using the display device includes obtaining fingerprint sensing data by sensing a user's fingerprint using the display device, detecting misalignment information indicating a degree of misalignment between the pinhole optical system and the optical sensor, generating calibration data using at least one piece of reference data corresponding to at least one reference folding angle according to the detected misalignment information, generating fingerprint data by correcting the fingerprint sensing data using the calibration data, and detecting the user's fingerprint according to the fingerprint data.
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公开(公告)号：US20190156095A1
公开(公告)日：2019-05-23
申请号：US16110898
申请日：2018-08-23
发明人： Seung Hyun MOON
IPC分类号： G06K9/00 , G09G3/3275
摘要： A display device may include a display unit, a finger print sensing unit, and a timing control unit. The display unit includes a plurality of pixel units and includes a fingerprint recognition unit, which may generate first fingerprint data related to a fingerprint. The fingerprint sensing unit may extract a plurality of maxima corresponding to ridge portions of the fingerprint from the first fingerprint data to generate second fingerprint data and may generate luminance data based on the second fingerprint data. The timing control unit may calculate a degree of deterioration of the fingerprint recognition unit based on the luminance data to generate compensation data. The fingerprint recognition unit may receive a data signal corresponding to the compensation data.
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公开(公告)号：US20230360427A1
公开(公告)日：2023-11-09
申请号：US18135791
申请日：2023-04-18
发明人： Il Nam KIM , Seung Hyun MOON , Dong Wook YANG , Hyun Dae LEE , Kang Bin JO , Go Eun CHA , Hee Chul HWANG
IPC分类号： G06V40/13 , G09G3/3233 , H10K59/131 , H10K39/34
CPC分类号： G06V40/1318 , G09G3/3233 , H10K59/131 , H10K39/34 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2310/0202 , G09G2310/08 , G09G2360/14 , G09G2354/00
摘要： 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.
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公开(公告)号：US20210064839A1
公开(公告)日：2021-03-04
申请号：US16943534
申请日：2020-07-30
发明人： Hyun Dae LEE , Seung Hyun MOON , Dong Wook YANG , Hee Chul HWANG , Deok Hwa WOO , Young Eun LEE
摘要： 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.
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公开(公告)号：US20230154411A1
公开(公告)日：2023-05-18
申请号：US17887973
申请日：2022-08-15
发明人： Hyun Dae LEE , Il Nam KIM , Seung Hyun MOON , Dong Wook YANG , Kang Bin JO , Go Eun CHA
IPC分类号： G09G3/3266 , G06V40/13
CPC分类号： G09G3/3266 , G06V40/1318 , G09G2310/08 , G09G2310/0294 , G09G2300/0828 , G09G2360/14 , G09G2310/061
摘要： A display device comprises a display panel which comprises scan lines, sensing lines, pixels electrically connected to each of the scan lines, and photo sensors electrically to each of the scan lines and the sensing lines, a scan driver which outputs scan signals to the scan lines according to a scan control signal, a timing controller which outputs the scan control signal to the scan driver, and a readout circuit which receives light sensing signals of the photo sensors from the sensing lines. The timing controller sets a frame frequency of the scan control signal to a first frame frequency in a first mode in which the display panel displays an image. The timing controller sets the frame frequency of the scan control signal to a second frame frequency in a second mode in which the photo sensors sense a fingerprint.
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8.发明申请公开(公告)号：US20220058254A1
公开(公告)日：2022-02-24
申请号：US17520699
申请日：2021-11-07
发明人： Won Sang PARK , Jin Oh KWAG , ILNAM KIM , Ji Hun RYU , Seung Hyun MOON , Bong Hyun YOU , Jong Hyun LEE , Hee Chul HWANG
摘要： 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.
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公开(公告)号：US20210365661A1
公开(公告)日：2021-11-25
申请号：US17392179
申请日：2021-08-02
发明人： Hyun Dae LEE , Seung Hyun MOON , Dong Wook YANG , Hee Chul HWANG , Deok Hwa WOO , Young Eun LEE
摘要： 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.
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