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公开(公告)号：US12038475B2
公开(公告)日：2024-07-16
申请号：US17718846
申请日：2022-04-12
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jun Seong Lee , Jun Young Ko , Kee Yong Kim , Eun Sol Seo , Jung Hun Sin , Jae Woo Choi
IPC: G01R31/28
CPC classification number: G01R31/2891
Abstract: A touch testing apparatus includes: a pogo pad area including input and output test pogo pads respectively connected to input and output test pads disposed in a pad area of a touch detection module; a test touch driver circuit configured to detect compression deviations between the input test pad and the input test pogo pad and between the output test pad and the output test pogo pad, and to correct touch data of the touch detection module based on the detected compression deviations; and a test board on which the test touch driver circuit is mounted, wherein the test board is configured to electrically connect the test touch driver circuit with the input and output test pogo pads.
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公开(公告)号：US11995918B2
公开(公告)日：2024-05-28
申请号：US17451736
申请日：2021-10-21
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kee Yong Kim
CPC classification number: G06V40/40 , G02B5/20 , G06V40/1318 , G06V40/1365 , H01L27/1462 , H01L27/14678
Abstract: A display device includes a sensor on a display panel, an optical filter, and a fingerprint detector. The sensor includes a first area and a second area and is configured to sense light transmitted through the display panel. The optical filter is between the display panel and sensor, and overlaps with the first area but not the second area. The optical filter blocks light corresponding to a first wavelength range in a wavelength range of the light. The fingerprint detector determine whether a fingerprint is a fake fingerprint or a pre-registered fingerprint based on a first sensing signal and a second sensing signal. The first sensing signal correspond to an area in contact with a finger in the second area, and the second sensing signal corresponds to an area not in contact with the finger among sensing signals from the sensor.
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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.
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4.发明授权公开(公告)号：US11682366B2
公开(公告)日：2023-06-20
申请号：US17341219
申请日：2021-06-07
Applicant: Samsung Display Co., Ltd.
Inventor： Kee Yong Kim
CPC classification number: G09G5/10 , G09G3/20 , G09G2320/0686 , G09G2360/145
Abstract: A display device having an optical sensor includes a display panel including display pixels; and a sensor controller; and sensor pixels, wherein the sensor pixels include an optical sensor located on a first area of the display panel, the display pixels display a pattern including a plurality of markers in the first area, the sensor pixels image the pattern to generate a first image, the sensor controller divides the first image into sub-images corresponding to the markers, the sensor controller calculates first representative coordinates obtained by adding an integer part and a decimal part with respect to the sub-images, a unit of the integer part is the number of the sensor pixels, and each of the integer part and the decimal part independently includes a first dimensional value for a first direction and a second dimensional value for a second direction orthogonal to the first direction.
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公开(公告)号：US11244136B2
公开(公告)日：2022-02-08
申请号：US16929221
申请日：2020-07-15
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kee Yong Kim , Mun Su Kim , Chang Yeob Kim , Jae-Sung Cha
IPC: G06K9/00
Abstract: A display apparatus includes: a display panel configured to display an image; a fingerprint sensor disposed on the display panel and configured to capture a fingerprint image and to generate fingerprint sensing data; and a fingerprint sensor controller configured to generate a compensation characteristic function of each pixel of the fingerprint sensor using a plurality of test patterns, to extract a coefficient of the compensation characteristic function of each pixel and to compensate the fingerprint sensing data using the coefficient of the compensation characteristic function.
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Patent Agency Ranking
公开(公告)号：US11232725B2
公开(公告)日：2022-01-25
申请号：US16225345
申请日：2018-12-19
Applicant: Samsung Display Co., Ltd.
Inventor： Kee Yong Kim
IPC: G09G3/00 , G01R31/317 , G06F11/27 , G06F11/32
Abstract: A display device includes a panel unit including a display unit, a first circuit board connected to the display unit, and a first connecting member connected to the first circuit board, an input unit including a connection member configured to attach to the first connecting member, and to provide an image signal to the panel unit, a master configured to output a transmitting signal for diagnosing an electrical connection between the first connecting member and the connection member, a transmitting line connected to the master, an inspecting line configured to connect to the transmitting line through the connection member, and a slave configured to connect to the master through the inspecting line, to receive the transmitting signal as a receiving signal, and to enable determination of on-time duty and off-time duty of the receiving signal to determine whether a connection error between the panel unit and the input unit exists.
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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
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.
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8.发明申请公开(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
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.
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9.发明授权公开(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
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.
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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.
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