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公开(公告)号：US10140929B2
公开(公告)日：2018-11-27
申请号：US15183644
申请日：2016-06-15
Applicant: Samsung Display Co., Ltd.
Inventor： Jin Woo Kim
IPC: G09G3/3283 , G01R15/09 , G01R19/00
Abstract: A current sensor includes a first resistor between a first node and a second node, a first voltage limiting device between the first node and the second node, and a second resistor between the second node and a third node, wherein a resistance level of the first resistor is greater than a resistance level of the second resistor, and wherein a current flowing from the third node to the first node is configured to be measured based on a voltage across the first resistor or a voltage across the second resistor.
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公开(公告)号：US10062328B2
公开(公告)日：2018-08-28
申请号：US15222582
申请日：2016-07-28
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jae Hoon Lee , Jin Woo Kim , Do Hyung Ryu , Jae Woo Song , Hae Goo Jung
IPC: G06F3/038 , G09G3/3233
CPC classification number: G09G3/3233 , G09G2320/0271 , G09G2320/0285 , G09G2320/045 , G09G2320/046 , G09G2320/048 , G09G2330/028
Abstract: An organic light emitting display device includes: pixels including driving transistors positioned in regions divided by scan lines and data lines; a data accumulating unit arranged to accumulate first data; a first storage unit storing current and voltage change information corresponding to a degradation of an organic light emitting diode (OLED); a second storage unit storing a compensation value corresponding at least partially to channel length modulation of the driving transistors; and a timing controller programmed to carry out an altering of first data corresponding to an ith pixel so as to generate second data to be supplied to the ith pixel, the altering carried out according to: accumulation stress information for the ith pixel, the accumulation stress information corresponding to the accumulated first data and being stored in the data accumulating unit, the current and voltage change information, and a compensation value corresponding to the ith pixel.
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公开(公告)号：US12217396B2
公开(公告)日：2025-02-04
申请号：US17812455
申请日：2022-07-14
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kyoung Hun Been , Mi Young Kim , Jin Woo Kim , Byeong Kyu Jeon
Abstract: A method for restoring an image of a fingerprint sensor is described. The method includes capturing, by the fingerprint sensor, a fake fingerprint image from a fake fingerprint; calculating a phase of the fake fingerprint from the fake fingerprint image; capturing a plurality of target fingerprint images at measurement times by a fingerprint sensor disposed on a rear side of a display panel; applying the calculated phase to each of the acquired target fingerprint images; and combining information from each of the plurality of target fingerprint images to generate a final fingerprint image.
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Patent Agency Ranking
公开(公告)号：US11810393B2
公开(公告)日：2023-11-07
申请号：US17341633
申请日：2021-06-08
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Soon Gyu Lee , Jin A Kang , Jin Woo Kim
CPC classification number: G06V40/1359 , G06F18/2163 , G06N5/04 , G06N20/00 , G06V10/25 , G06V10/30 , G06V10/993 , G06V40/1376
Abstract: A fingerprint authentication device includes a biometric sensor configured to generate a sensing signal by sensing biometric information, an image processor configured to generate a fingerprint image based on the sensing signal, a singular point determiner circuit configured to select at least one fingerprint piece based on the fingerprint image or the sensing signal, and determine a singular point of the fingerprint image by analyzing the selected at least one fingerprint piece, and an authenticator circuit. The image processor is further configured to extract an interest region including the singular point from the fingerprint image based on a coordinate of the singular point, and the authenticator circuit is configured to perform fingerprint authentication by comparing the interest region with registered fingerprint information.
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公开(公告)号：US11544955B2
公开(公告)日：2023-01-03
申请号：US17367165
申请日：2021-07-02
Applicant: Samsung Display Co., Ltd.
Inventor： Kyoung Hun Been , Jin Woo Kim , Byeong Kyu Jeon , Soon Gyu Lee
Abstract: An ultrasonic fingerprint sensing method includes: generating a first ultrasonic wave using a first frequency; receiving a first signal generated by reflection of the first ultrasonic wave from each of a ridge and a valley of a fingerprint; generating a first image based on the first signal; comparing the first image with a registered reference image to generate a matching score; and in response to the matching score being less than a threshold value, generating a second image using a second frequency.
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公开(公告)号：US20200175249A1
公开(公告)日：2020-06-04
申请号：US16785617
申请日：2020-02-09
Applicant: Samsung Display Co., Ltd.
Inventor： Jin Woo Kim , Jin Oh KWAG , Hai Jung IN , Won Jun CHOE
IPC: G06K9/00 , G06F21/32 , G09G3/3208 , G09G3/3233 , G09G3/3266 , G09G3/3275
Abstract: A display device including a display panel including a display area including a fingerprint sensing area and a plurality of pixels provided in the fingerprint sensing area; a sensor layer provided on one surface of the display panel overlapping the fingerprint sensing area, the sensor layer including a plurality of photo sensors; a panel driving circuit configured to output a data signal corresponding to image data to the display panel, corresponding to a first mode, and to output a driving signal to the display panel to allow the pixels to emit lights in a form corresponding to a predetermined light pattern, corresponding to a second mode; and a fingerprint detecting circuit configured to receive sensing signals from the photo sensors, corresponding to the second mode, the fingerprint detecting circuit detecting a fingerprint of a user, based on a sensing signal corresponding to the light pattern among the received sensing signals.
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公开(公告)号：US10510303B2
公开(公告)日：2019-12-17
申请号：US16162282
申请日：2018-10-16
Applicant: Samsung Display Co., Ltd.
Inventor： Jin Woo Kim
IPC: G09G3/3283 , G01R15/09 , G01R19/00
Abstract: A current sensor includes a first resistor between a first node and a second node, a first voltage limiting device between the first node and the second node, and a second resistor between the second node and a third node, wherein a resistance level of the first resistor is greater than a resistance level of the second resistor, and wherein a current flowing from the third node to the first node is configured to be measured based on a voltage across the first resistor or a voltage across the second resistor.
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公开(公告)号：US20180285619A1
公开(公告)日：2018-10-04
申请号：US15831317
申请日：2017-12-04
Applicant: Samsung Display Co., Ltd.
Inventor： Jin Woo Kim , Jin Oh Kwag , Hai Jung In , Won Jun Choe
IPC: G06K9/00 , G09G3/3233 , G09G3/3266 , G09G3/3275
Abstract: A display device including a display panel including a display area including a fingerprint sensing area and a plurality of pixels provided in the fingerprint sensing area; a sensor layer provided on one surface of the display panel overlapping the fingerprint sensing area, the sensor layer including a plurality of photo sensors; a panel driving circuit configured to output a data signal corresponding to image data to the display panel, corresponding to a first mode, and to output a driving signal to the display panel to allow the pixels to emit lights in a form corresponding to a predetermined light pattern, corresponding to a second mode; and a fingerprint detecting circuit configured to receive sensing signals from the photo sensors, corresponding to the second mode, the fingerprint detecting circuit detecting a fingerprint of a user, based on a sensing signal corresponding to the light pattern among the received sensing signals.
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