公开(公告)号：US20240272752A1

公开(公告)日：2024-08-15

申请号：US18643849

申请日：2024-04-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Moon Jae JEONG

IPC: G06F3/044 ,  H03H11/12 ,  H03H19/00 ,  H04B1/10

CPC classification number: G06F3/044 ,  H03H11/126 ,  H03H19/004 ,  H04B1/10

Abstract: A sensor device includes: first sensors; second sensors which form capacitances with the first sensors; a sensor transmitter connected to the first sensors, where the sensor transmitter supplies driving signals to the first sensors; and a sensor receiver connected to the second sensors, where the sensor receiver receives sensing signals from the second sensors, and the sensor receiver includes a band pass filter which filters the sensing signals. The band pass filter includes: a first integrator including a first amplifier; a first high pass filter converter connected to a first input terminal, a second input terminal and a first output terminal of the first amplifier, where the first high pass filter converter time-divisionally provides N high pass filter conversion paths; and a first gain auxiliary component connected to the first input terminal and the first output terminal of the first amplifier while the first integrator performs an integral function.

公开(公告)号：US20230121263A1

公开(公告)日：2023-04-20

申请号：US17818442

申请日：2022-08-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Moon Jae JEONG

IPC: H03H11/04 ,  G06F3/041

Abstract: A bandpass filter comprises first and second input terminals configured to receive a plurality of radio frequency signals having a phase difference, first and second load resistors connected in series to the first and second input terminals, respectively, a first switching unit connected in series to the first and second load resistors, a capacitor unit connected in series to the first switching unit, a second switching unit connected between the capacitor unit and a ground, and first and second output terminals connected between the first switching unit and the first and second load resistors, respectively.

公开(公告)号：US20230280869A1

公开(公告)日：2023-09-07

申请号：US17992173

申请日：2022-11-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Moon Jae JEONG

IPC: G06F3/044 ,  H03H11/12 ,  H03H19/00 ,  H04B1/10

CPC classification number: G06F3/044 ,  H03H11/126 ,  H03H19/004 ,  H04B1/10

Abstract: A sensor device includes: first sensors; second sensors which form capacitances with the first sensors; a sensor transmitter connected to the first sensors, where the sensor transmitter supplies driving signals to the first sensors; and a sensor receiver connected to the second sensors, where the sensor receiver receives sensing signals from the second sensors, and the sensor receiver includes a band pass filter which filters the sensing signals. The band pass filter includes: a first integrator including a first amplifier; a first high pass filter converter connected to a first input terminal, a second input terminal and a first output terminal of the first amplifier, where the first high pass filter converter time-divisionally provides N high pass filter conversion paths; and a first gain auxiliary component connected to the first input terminal and the first output terminal of the first amplifier while the first integrator performs an integral function.

公开(公告)号：US20230152922A1

公开(公告)日：2023-05-18

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

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/0446

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.

公开(公告)号：US20230326384A1

公开(公告)日：2023-10-12

申请号：US18210960

申请日：2023-06-16

Applicant: SAMSUNG DISPLAY CO., LTD. ,  KOREAN ADVANCE INSTITUTE OF SCIENCE AND TECHNOLOGY

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 ,  G09G3/3208 ,  G09G2310/027 ,  G09G2300/0871

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.

公开(公告)号：US20230152924A1

公开(公告)日：2023-05-18

申请号：US17817403

申请日：2022-08-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Moon Jae JEONG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04182 ,  G06F3/0446 ,  G06F2203/04112

Abstract: A display device includes driving electrodes and sensing electrodes; analog front-end circuits; a selector connected to the analog front-end circuits to select an output of the analog front-end circuits; an A/D converter generating a sensed value based on output signals of the selector; and a signal processor. Each of the analog front-end circuits includes a charge amplifier differentially amplifying first and second sensing signals provided to first and second input terminals, and outputting first and second differential signals to first and second output terminals; a filter filtering the first and second differential signals to output first and second filtered signals; a demodulator outputting an in-phase signal (I-signal) and a quadrature signal (Q-signal) of the first and second filtered signals; and a complex band-pass filter that filters the I-signal and the Q-signal.

公开(公告)号：US20240310954A1

公开(公告)日：2024-09-19

申请号：US18672319

申请日：2024-05-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Moon Jae JEONG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04182 ,  G06F3/0446 ,  G06F2203/04112

Abstract: A display device includes driving electrodes and sensing electrodes; analog front-end circuits; a selector connected to the analog front-end circuits to select an output of the analog front-end circuits; an A/D converter generating a sensed value based on output signals of the selector; and a signal processor. Each of the analog front-end circuits includes a charge amplifier differentially amplifying first and second sensing signals provided to first and second input terminals, and outputting first and second differential signals to first and second output terminals; a filter filtering the first and second differential signals to output first and second filtered signals; a demodulator outputting an in-phase signal (I-signal) and a quadrature signal (Q-signal) of the first and second filtered signals; and a complex band-pass filter that filters the I-signal and the Q-signal.

公开(公告)号：US20230259236A1

公开(公告)日：2023-08-17

申请号：US18301444

申请日：2023-04-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Moon Jae JEONG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04182 ,  G06F3/0446 ,  G06F2203/04112

Abstract: A display device includes driving electrodes and sensing electrodes; analog front-end circuits; a selector connected to the analog front-end circuits to select an output of the analog front-end circuits; an A/D converter generating a sensed value based on output signals of the selector; and a signal processor. Each of the analog front-end circuits includes a charge amplifier differentially amplifying first and second sensing signals provided to first and second input terminals, and outputting first and second differential signals to first and second output terminals; a filter filtering the first and second differential signals to output first and second filtered signals; a demodulator outputting an in-phase signal (I-signal) and a quadrature signal (Q-signal) of the first and second filtered signals; and a complex band-pass filter that filters the I-signal and the Q-signal.

公开(公告)号：US20230117808A1

公开(公告)日：2023-04-20

申请号：US17730549

申请日：2022-04-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Gun MA ,  Moon Jae JEONG

IPC: G06F3/044 ,  H03F3/70 ,  G06F3/041 ,  H03F3/68 ,  H03M1/12

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.