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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：US11908422B2
公开(公告)日：2024-02-20
申请号：US17986675
申请日：2022-11-14
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Hyung Gun Ma , Oh Jo Kwon , Ji Woong Kim , Jun Yong Song , Seong Joo Lee , Sang Hyun Heo
IPC: G09G3/3275 , H03M1/66 , G09G3/32
CPC classification number: G09G3/3275 , H03M1/66 , G09G3/32 , G09G2310/027 , G09G2310/0259 , G09G2310/0291 , G09G2330/021 , G09G2330/028
Abstract: A digital-analog converter of the disclosure converts digital image data to generate analog data signals. The digital-analog converter includes a voltage divider which generates a plurality of gamma reference voltages based on a first reference voltage and a second reference voltage; a global ramp including a plurality of gamma decoders which generates a plurality of global gamma voltages based on the gamma reference voltages; a decoder which selects one of the global gamma voltages according to the digital image data to generate the analog data signals; and a ramp controller which turns off at least some of the gamma decoders based on the digital image data.
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公开(公告)号：US20240004499A1
公开(公告)日：2024-01-04
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：US12093489B2
公开(公告)日：2024-09-17
申请号：US17730549
申请日：2022-04-27
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Hyung Gun Ma , Moon Jae Jeong
CPC classification number: G06F3/044 , G06F3/04182 , H03F3/68 , H03F3/70 , H03M1/12 , G06F1/04 , G09G3/3275
Abstract: A sensor device includes: first sensors; second sensors generating a mutual capacitance with the first sensors; a sensor transmitter connected to the first sensors, the sensor transmitter supplying driving signals to the first sensors; and a sensor receiver connected to the second sensors. The sensor receiver receives sensing signals from the second sensors. The sensor receiver includes a band pass filter including a plurality of paths connected in parallel. A first path among the plurality of paths sequentially includes an input mixer, a filter, and an output mixer.
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Patent Agency Ranking
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：US20230305657A1
公开(公告)日：2023-09-28
申请号：US18075845
申请日：2022-12-06
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Keum Dong JUNG , Oh Jo Kwon , Ji Woong Kim , Hyung Gun Ma , Seong An Park , Sang Hyun Heo
CPC classification number: G06F3/0418 , G06F1/04 , G06F3/0446
Abstract: A sensor device including: first sensors; second sensors configured to form capacitances with the first sensors; a sensor transmitter connected to the first sensors and configured to supply driving signals having a first frequency to the first sensors; and a sensor receiver connected to the second sensors and configured to receive sensing signals from the second sensors, wherein the sensor receiver includes: a multipath filter having a center frequency set to the first frequency; and a first chopper integrator connected to the multipath filter, and having a center frequency set to the first frequency.
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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：US12130987B2
公开(公告)日：2024-10-29
申请号：US18075845
申请日：2022-12-06
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Keum Dong Jung , Oh Jo Kwon , Ji Woong Kim , Hyung Gun Ma , Seong An Park , Sang Hyun Heo
CPC classification number: G06F3/0418 , G06F1/04 , G06F3/0446
Abstract: A sensor device including: first sensors; second sensors configured to form capacitances with the first sensors; a sensor transmitter connected to the first sensors and configured to supply driving signals having a first frequency to the first sensors; and a sensor receiver connected to the second sensors and configured to receive sensing signals from the second sensors, wherein the sensor receiver includes: a multipath filter having a center frequency set to the first frequency; and a first chopper integrator connected to the multipath filter, and having a center frequency set to the first frequency.
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公开(公告)号：US11868560B2
公开(公告)日：2024-01-09
申请号：US17809091
申请日：2022-06-27
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Keum Dong Jung , Ji Woong Kim , Hyung Gun Ma , Kyung Tea Park , Moon Jae Jeong , Sang Hyun Heo
CPC classification number: G06F3/04166 , G06F3/0446 , G06F3/0412 , G06F3/0448 , G06F2203/04112
Abstract: A sensor device of the present invention includes first sensors; second sensors forming capacitance with the first sensors; a multi-frequency generator generating a first frequency signal and a second frequency signal having different frequencies; a sensor transmitter supplying first driving signals based on the first frequency signal to first sensors of a first group among the first sensors, supplying second driving signals based on the second frequency signal to first sensors of a second group among the first sensors, and simultaneously supplying the first driving signals and the second driving signals; and a sensor receiver simultaneously receiving sensing signals from the second sensors.
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