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.

公开(公告)号：US20190163313A1

公开(公告)日：2019-05-30

申请号：US16198661

申请日：2018-11-21

Applicant: Samsung Display Co., Ltd.

Inventor： Ji Woong Kim

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/042

Abstract: A display device may include: a first touch sensor including first sensing electrodes and second sensing electrodes, arranged in a sensing area intersecting each other; a display panel including: pixels arranged in a display area overlapping with the sensing area; and a second touch sensor including photo sensors disposed between the pixels or in the pixels; and a driving circuit configured to drive the first touch sensor and the display panel, wherein the driving circuit may be configured to detect a touch input by comparing a first touch detection value detected by the first touch sensor and a second touch detection value detected by the photo sensors.

公开(公告)号：US08976137B2

公开(公告)日：2015-03-10

申请号：US13684868

申请日：2012-11-26

Applicant: Samsung Display Co., Ltd.

Inventor： Nam-Hee Goo ,  Ji Woong Kim ,  Chul Kim ,  Yu-Han Bae ,  Byoung Jun Lee

IPC: G06F3/044 ,  G06F3/041 ,  G02F1/1333 ,  G02F1/1347 ,  G02B27/22

CPC classification number: G06F3/044 ,  G02B27/22 ,  G02F1/13338 ,  G02F1/13471 ,  G06F3/0412

Abstract: A touch barrier panel having a touch sensing capability and a 3-dimensional image display capability is disposed on a display panel such that manufacturing cost may be reduced and the thickness thereof is relatively thin. Also, the negative liquid crystal that is not affected by the vertical electric field is used such that a mode change speed and response speed may be improved.

Abstract translation: 具有触摸感测能力和3维图像显示能力的触摸屏障板设置在显示面板上，使得制造成本可以降低并且其厚度相对较薄。 而且，使用不受垂直电场影响的负极液晶，从而可以提高模式变化速度和响应速度。

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

IPC: G06F3/044 ,  G06F3/041 ,  H03M1/66

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.

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

IPC: G06F3/041 ,  G06F3/044

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.

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

IPC: G06F3/041 ,  G06F1/04

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：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.

公开(公告)号：US20200294451A1

公开(公告)日：2020-09-17

申请号：US16817527

申请日：2020-03-12

Applicant: Samsung Display Co., Ltd.

Inventor： Ji Woong Kim ,  Oh Jo Kwon ,  Hyo Jin Lee ,  Se Hyuk Park

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A method of driving a pixel including: during a first period of a first frame, applying a first scan signal having a turn-on level to the first scan line, applying a data voltage to a data line, and applying a second scan signal having the turn-on level to the second scan line; and during a second period of a second frame, applying the first scan signal having the turn-on level to the first scan line, applying a bias voltage to the data line, and applying the second scan signal having a turn-off level to the second scan line, the second frame is a frame subsequent to the first frame, the second period is longer than the first period, and a light-emitting diode emits light at luminance based on the data voltage during at least a portion of the first frame and at least a portion of the second frame.