公开(公告)号：US11735103B2

公开(公告)日：2023-08-22

申请号：US17721465

申请日：2022-04-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyung Tea Park ,  Ji Woong Kim ,  Hyung Gun Ma ,  Seong An Park ,  Seong Joo Lee ,  Tae Hun Lee ,  Sang Hyun Heo

IPC: G09G3/32 ,  H03F3/70

CPC classification number: G09G3/32 ,  H03F3/70 ,  G09G2310/0291 ,  G09G2310/0297

Abstract: An analog front-end includes a (1-1)-th charge amplifier configured to differentially amplify a first and second sensing signals provided to a (1-1)-th input terminal and a (1-2)-th input terminal, respectively, and output a (1-1)-th differential signal. A (1-2)-th charge amplifier is configured to differentially amplify the second sensing signal and a third sensing signal provided to a (1-3)-th input terminal and a (1-4)-th input terminal, respectively, and output a (1-2)-th differential signal. A second charge amplifier is configured to differentially amplify the (1-1)-th differential signal and the (1-2)-th differential signal provided to a (2-1)-th input terminal and a (2-2)-th input terminal, respectively, and output a (2-1)-th differential signal and a (2-2)-th differential signal. A demodulation circuit is configured to filter the (2-1)-th differential signal and the (2-2)-th differential signal and output demodulated differential signals. An analog-to-digital converter is configured to output a sensing value based on the demodulated differential signals.

公开(公告)号：US12260800B2

公开(公告)日：2025-03-25

申请号：US18611074

申请日：2024-03-20

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Hyun Heo ,  Joon Chul Goh ,  Oh Jo Kwon ,  Dong Soo Kim ,  Hyung Gun Ma ,  Jung Hun Yi

IPC: G09G3/20 ,  G09G3/3233 ,  H10K59/131

Abstract: A pixel may include: a first transistor including a second electrode, a first electrode electrically connected to a first power line, and a gate electrode connected to a first node; a second transistor including a second electrode, a first electrode electrically connected to a data line, and a gate electrode electrically connected to a first scan line; a third transistor connected between the first node and the data line, and including a gate electrode electrically connected to a second scan line; a first capacitor including a first electrode connected to the second electrode of the second transistor, and a second electrode connected to the first node; a second capacitor connected between the first power line and the first node; and a light emitting element between a second power line and the first transistor, and including a second electrode electrically connected to the second power line.

公开(公告)号：US12147623B2

公开(公告)日：2024-11-19

申请号：US17819071

申请日：2022-08-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Gun Ma ,  Sang Hyun Heo ,  Moon Jae Jeong

IPC: G06F3/041 ,  G09G3/20 ,  H03F3/68 ,  H03F3/70

Abstract: A sensor device of the present invention includes first sensors receiving a plurality of driving signals; second sensors outputting a plurality of sensing signals in response to the driving signals; and a sensor receiver connected receiving the sensing signals from the second sensors, and including a band pass filter filtering the sensing signals. The band pass filter includes a multi-path filter in which a frequency of the driving signals is set as a center frequency; a gain amplifier amplifying signals filtered through the multi-path filter according to a predetermined gain value; and a buffer isolating the multi-path filter and the gain amplifier from each other.

公开(公告)号：US12125426B2

公开(公告)日：2024-10-22

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 ,  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.

公开(公告)号：US11869438B2

公开(公告)日：2024-01-09

申请号：US17671969

申请日：2022-02-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Gun Ma ,  Ji Woong Kim ,  Jun Yong Song ,  Seong Joo Lee ,  Keum Dong Jung ,  Sang Hyun Heo

IPC: G09G3/32 ,  G09G3/3266 ,  H01L25/18 ,  G09G3/3275

CPC classification number: G09G3/3266 ,  H01L25/18 ,  G09G3/3275 ,  G09G2300/043 ,  G09G2300/0426 ,  G09G2300/0814 ,  G09G2310/0202 ,  G09G2310/0286 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2320/0219

Abstract: A display device includes a display panel including pixels connected to scan lines and data lines, and connection line connected to the scan lines, and a scan driver which drives scan lines. The scan driver includes a scan signal output circuit which outputs a first output signal as a scan signal to a first output line and outputs a second output signal to a second output line, a signal distribution circuit which outputs the first output signal to a first or third connection line and outputs the second output signal to a second or fourth connection line in response to first and second distribution control signals, and a scan-off circuit which outputs gate-off level to at least one of the scan lines in response to first and second scan-off control signals.

公开(公告)号：US11501718B2

公开(公告)日：2022-11-15

申请号：US17166482

申请日：2021-02-03

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

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.

公开(公告)号：US11322096B2

公开(公告)日：2022-05-03

申请号：US17197550

申请日：2021-03-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seong Joo Lee ,  Oh Jo Kwon ,  Ji Woong Kim ,  Hyung Gun Ma ,  Jun Yong Song ,  Sang Hyun Heo

IPC: G09G3/3275 ,  G09G3/3266

Abstract: A data driver includes: a signal generator which includes a staircase waveform gray voltage signal generator which generate a plurality of staircase waveform gray voltage signals using a lowest gamma reference voltage, a highest gamma reference voltage, and a plurality of gamma voltages having a magnitude between the lowest gamma reference voltage and the highest gamma reference voltage; and a channel driver which includes a decoder which output one staircase waveform gray voltage signal selected from the staircase waveform gray voltage signals, an output circuit which output a gray voltage corresponding to the selected staircase waveform gray voltage signal, and a reset unit which supplies one of the gamma voltages to the output circuit as a reset voltage.

公开(公告)号：US20220013070A1

公开(公告)日：2022-01-13

申请号：US17166482

申请日：2021-02-03

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

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.