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公开(公告)号：US20240176450A1
公开(公告)日：2024-05-30
申请号：US18432158
申请日：2024-02-05
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： JI WOONG KIM , Moon Jae Jeong , Hyung Gun Ma , Tae Hun Lee , Keum Dong Jung , Sang Hyun Heo
CPC classification number: G06F3/04182 , G06F3/0446 , G06F3/0447
Abstract: An input sensing device includes first driving electrodes, second driving electrodes, and sensing electrodes, and a sensing driver that transmits a first driving signal to the first driving electrodes at a first frequency, transmits a second driving signal to the second driving electrodes at a second frequency, and determines a touch or approach of an external object based on sensing signals received from the sensing electrodes. The sensing driver includes analog front-end circuits that separate a sensing signal of the first frequency and a sensing signal of the second frequency that are received from the respective sensing electrodes, and generate digital sensing data based on a result of a recombination of the separated sensing signals.
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公开(公告)号：US20230260441A1
公开(公告)日：2023-08-17
申请号：US17985554
申请日：2022-11-11
Inventor： Hyung Gun Ma , Gyu Wan Lim , Gyeong Gu Kang , Hyun Sik Kim , Keum Dong Jung , Moon Jae Jeong
IPC: G09G3/20
CPC classification number: G09G3/20 , H01L27/323
Abstract: A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.
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公开(公告)号：US11423691B2
公开(公告)日：2022-08-23
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 , Chui Kim , Jun Hee Moon , Deok Hwa Woo , Hee Chui Hwang
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.
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公开(公告)号：US11287933B2
公开(公告)日：2022-03-29
申请号：US16924078
申请日：2020-07-08
Applicant: Samsung Display Co., Ltd.
Inventor： Chui Kim , Soo Jung Lee , Keum Dong Jung
IPC: G06F3/044 , H01L27/32 , G06F3/0354 , G06K9/00
Abstract: A pen sensing unit and a display device are disclosed. The pen sensing unit comprises a first pen line, a pen scan line, and a pen sensor member. The first pen line extends in a first direction. The pen scan line extends in a second direction that intersects the first direction. The pen sensor member is connected to the first pen line and the pen scan line. The pen sensor member is configured to sense input from a pen. The pen sensor member comprises a pen sensor and a pen sensor circuit. The pen sensor circuit is connected to a first end of the pen sensor. The pen sensor circuit comprises a first thin film transistor.
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公开(公告)号：US10650213B2
公开(公告)日：2020-05-12
申请号：US15890581
申请日：2018-02-07
Applicant: Samsung Display Co., Ltd.
Inventor： Keum Dong Jung , Ki Seo Kim , Il Nam Kim , Jae-Kyoung Kim , Kyung Tea Park , Jong In Baek
IPC: G06K9/00
Abstract: A fingerprint sensing device includes: a fingerprint sensor including scan lines and initialization lines extending in a first direction and arranged in a second direction, sensing lines extending in the second direction and arranged in the first direction, and sensing pixels connected to the scan lines, the initialization lines, and the sensing lines and disposed in a matrix configuration; a scan driver configured to apply an enable-level initialization signal to a-numbered sensing pixel rows while applying a disable-level initialization signal to b-numbered sensing pixel rows, and applying an enable-level scan signal to one sensing pixel row in the b-numbered sensing pixel rows; and a sensing driver configured to receive a sensing signal from the sensing pixel row to which the scan signal is applied through the sensing lines, wherein the a and b are positive numbers that are greater than 2.
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Patent Agency Ranking
公开(公告)号：US20180246387A1
公开(公告)日：2018-08-30
申请号：US15959689
申请日：2018-04-23
Applicant: Samsung Display Co. Ltd.
Inventor： Keum Dong Jung , Seung Hwan Moon , Seong Young Lee
IPC: G02F1/1362 , G09G3/36 , G02F1/133 , G02F1/1343
CPC classification number: G02F1/136286 , G02F1/13306 , G02F1/136213 , G02F2001/134345 , G09G3/3648 , G09G2300/0443 , G09G2300/0814 , G09G2320/028
Abstract: A liquid crystal display includes a display panel including first and second subpixels, where the first subpixel includes a first switching device including a first electrode connected to the j-th data line, a second electrode connected to a first subpixel electrode and a gate electrode connected to an i-th gate line, the second subpixel includes a second switching device including a first electrode connected to a j-th data line, a second electrode connected to a second subpixel electrode and a gate electrode connected to the i-th gate line, a third switching device including a first electrode connected to the second subpixel electrode and a gate electrode connected to the i-th gate line, and a fourth switching device including a first electrode connected to the j-th data line, a second electrode connected to the first electrode of the third switching device and a gate electrode connected to the i-th gate line.
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公开(公告)号：US11947764B2
公开(公告)日：2024-04-02
申请号：US17750566
申请日：2022-05-23
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Ji Woong Kim , Oh Jo Kwon , Kyung Tea Park , Keum Dong Jung , Sang Hyun Heo
CPC classification number: G06F3/0446 , G06F3/04166 , H03M1/662
Abstract: An input sensing unit includes a touch sensing unit, which includes a plurality of driving electrodes, a plurality of sensing electrodes, and a driving signal generating unit which provides driving signals to the driving electrodes. The sensing electrodes are insulated from and intersect the driving electrodes. The driving signal generating unit includes touch drivers connected to driving electrodes and a digital-to-analog converter configured to provide a first signal or a second signal, and each of the touch drivers is connected to a preset number of driving electrodes among the driving electrodes.
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公开(公告)号：US11893186B2
公开(公告)日：2024-02-06
申请号：US18176440
申请日：2023-02-28
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Ji Woong Kim , Moon Jae Jeong , Hyung Gun Ma , Tae Hun Lee , Keum Dong Jung , Sang Hyun Heo
CPC classification number: G06F3/04182 , G06F3/0446 , G06F3/0447
Abstract: An input sensing device includes first driving electrodes, second driving electrodes, and sensing electrodes, and a sensing driver that transmits a first driving signal to the first driving electrodes at a first frequency, transmits a second driving signal to the second driving electrodes at a second frequency, and determines a touch or approach of an external object based on sensing signals received from the sensing electrodes. The sensing driver includes analog front-end circuits that separate a sensing signal of the first frequency and a sensing signal of the second frequency that are received from the respective sensing electrodes, and generate digital sensing data based on a result of a recombination of the separated sensing signals.
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公开(公告)号：US11721265B1
公开(公告)日：2023-08-08
申请号：US17985554
申请日：2022-11-11
Inventor： Hyung Gun Ma , Gyu Wan Lim , Gyeong Gu Kang , Hyun Sik Kim , Keum Dong Jung , Moon Jae Jeong
IPC: G09G3/20 , G06F3/044 , G09G3/3208 , H10K59/40
CPC classification number: G09G3/20 , G06F3/044 , G09G3/3208 , G09G2300/0828 , G09G2300/0852 , G09G2300/0871 , G09G2310/027 , G09G2310/0291 , G09G2330/028 , H10K59/40
Abstract: A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.
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公开(公告)号：US10572085B2
公开(公告)日：2020-02-25
申请号：US16004447
申请日：2018-06-11
Applicant: Samsung Display Co., Ltd.
Inventor： Keum Dong Jung , Ki Seo Kim , Il Nam Kim , Kyung Tea Park , Yun Ho Kim , Jae Kyoung Kim , Won Sang Park , Jong In Baek
Abstract: A fingerprint sensor including first, second, and third lines, and a unit sensor coupled to the first, the second, and the third lines. The unit sensor includes a pixel electrode coupled between the first line and the second line, a first capacitance element coupled between the first line and the pixel electrode, a second capacitance element coupled between the second line and the pixel electrode, a switching element coupled between the pixel electrode and one of the first line, the second line, a first line of an adjacent unit sensor, and a second line of the adjacent unit sensor, and including a control electrode coupled to the third line, and a third capacitance element coupled between the third line and the pixel electrode, in which at least one of the first and the second capacitance elements includes a variable capacitance element.
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