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.

公开(公告)号：US12217683B2

公开(公告)日：2025-02-04

申请号：US18428688

申请日：2024-01-31

Applicant: Samsung Display Co., LTD.

Inventor： Joon Chul Goh ,  Sang Hyun Heo

IPC: G09G3/3233

Abstract: Provided herein is a sub-pixel including first to seventh transistors, first and second capacitors, and a light emitting element, and a display device including the sub-pixel. A body terminal of the first transistor is connected to a first power line. In the sub-pixel and the display device including the sub-pixel in accordance with embodiments of the present disclosure, mitigation of the body effect may lead to an improvement in display quality.

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

IPC: G06F3/041 ,  G06F1/04 ,  G06F3/044

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.

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

IPC: G06F3/041 ,  G06F3/044

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.

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.