公开(公告)号：US20230051918A1

公开(公告)日：2023-02-16

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

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：US20220335871A1

公开(公告)日：2022-10-20

申请号：US17500875

申请日：2021-10-13

Applicant: Samsung Display Co., Ltd. ,  Korea Advanced Institute of Science and Technology

Inventor： Seong Joo LEE ,  Seok Tae KOH ,  Gyeong Gu KANG ,  Oh Jo KWON ,  Hyun Sik KIM ,  Gyu Wan LIM ,  Keum Dong JUNG

IPC: G09G3/20

Abstract: An output buffer is disclosed that includes: a buffer circuit that outputs an output signal to an output terminal based on a first input signal provided to a first input terminal and a second input signal provided to a second input terminal; and a current supply circuit that is connected in parallel to the buffer circuit, and provides an auxiliary current to the output terminal based on the first input signal and the second input signal.

公开(公告)号：US20230073395A1

公开(公告)日：2023-03-09

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: G09G3/32

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：US20210335277A1

公开(公告)日：2021-10-28

申请号：US17232061

申请日：2021-04-15

Applicant: Samsung Display Co., Ltd. ,  Korea University Research and Business Foundation

Inventor： Young-Soo HWANG ,  Joon-Chul GOH ,  Oh Jo KWON ,  Ki-Duk KIM ,  Jeongmin KIM ,  Bong Hyun YOU ,  Hyung-Min LEE ,  Seung Hun CHOI

IPC: G09G3/3275

Abstract: A data driver includes a gamma voltage generator configured to generate gamma voltages based on a number of data bits of a pixel data; a first digital-to-analog block configured to generate a plurality of time-division gamma voltage signals respectively corresponding to a plurality of gamma voltage groups; a plurality of time-division gamma voltage line groups for transferring the plurality of time-division gamma voltage signals; a second digital-to-analog block configured to select a time-division gamma voltage signal among the time-division gamma voltage signals according to upper bits of the pixel data in each channel; a time-division gamma voltage select block configured to select a gamma voltage according to lower bits of the pixel data in each channel; and an output buffer block configured to output the selected gamma voltage in each channel.

公开(公告)号：US20250006097A1

公开(公告)日：2025-01-02

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：US20200090590A1

公开(公告)日：2020-03-19

申请号：US16402169

申请日：2019-05-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jeon Kyoo KIM ,  Oh Jo KWON ,  Jiwoong KIM ,  JunYong SONG ,  Dong Won LEE ,  Jae Keun LIM

IPC: G09G3/3258 ,  G09G3/3266

Abstract: A display device includes data lines, scan lines, and pixels. Each of the pixels includes an organic light emitting diode, a first transistor (OLED), and a second transistor. The first transistor is electrically connected to an anode of the OLED. The second transistor is electrically connected to the first transistor, a scan line among the scan lines, and a data line among the data lines. The second transistors of the pixels may receive instances of a reference voltage from the data lines during a first period of a frame. The second transistors of the pixels may simultaneously receive instances of a turn-on scan signal from the scan lines during the first period of the frame. Cathodes of the OLEDs of the pixels may receive instances of a turn-off voltage for the OLEDs to turn off during the first period of the frame.

公开(公告)号：US20240395192A1

公开(公告)日：2024-11-28

申请号：US18590940

申请日：2024-02-29

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: G09G3/32

Abstract: According to embodiments of the disclosure, a pixel includes a driving transistor including a gate electrode, a first electrode electrically connected to a first power line and a second electrode electrically connected to a light emitting element, a body of a semiconductive layer constituting the driving transistor being electrically connected to the first power line.

公开(公告)号：US20210359699A1

公开(公告)日：2021-11-18

申请号：US17168448

申请日：2021-02-05

Applicant: SAMSUNG DISPLAY CO., LTD. ,  Korea Advanced Institute of Science and Technology

Inventor： Seong Joo LEE ,  Oh Jo KWON ,  Gyeong Gu KANG ,  Seok Tae KOH ,  Joon Chul GOH ,  Hyun Sik KIM ,  Bong Hyun YOU

IPC: H03M1/66 ,  G09G3/20

Abstract: A digital-to-analog converter (“DAC”) converts digital image data into analog image signals. The DAC includes a stage outputting different voltages to a first output terminal and a second output terminal based on a voltage supplied to a first input terminal, a voltage supplied to a second input terminal, and a first input bit. The stage includes a switch circuit including switches that are alternately turned on by a control signal, and outputting an intermediate output voltage to a third output terminal based on a first input voltage supplied to the first input terminal and a second input voltage supplied to the second input terminal, and a selector outputting one of the first input voltage and the second input voltage, and the intermediate output voltage.

公开(公告)号：US20180082639A1

公开(公告)日：2018-03-22

申请号：US15699162

申请日：2017-09-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jeong Hwan SHIN ,  Sung Hoon BANG ,  Sang Jae YEO ,  Oh Jo KWON

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device includes pixels connected to data lines and scan lines, a first compensator which is connected to sensing lines and senses deviation information of the sensing lines while supplying different voltages to adjacent sensing lines, and a sensing unit which is connected to the first compensator and senses characteristic information of each of the pixels.

公开(公告)号：US20240241598A1

公开(公告)日：2024-07-18

申请号：US18469714

申请日：2023-09-19

Applicant: SAMSUNG DISPLAY CO., LTD. ,  Research & Business Foundation Sungkyunkwan University

Inventor： Ji Woong KIM ,  Kang Yoon LEE ,  Oh Jo KWON ,  Dong Gyu KIM ,  Chang Hyeon KIM

IPC: G06F3/041 ,  G06F3/044 ,  H03K17/96

CPC classification number: G06F3/04166 ,  G06F3/044 ,  H03K17/962

Abstract: A touch detection device supplies driving signals generated based on orthogonal carriers and a CDMA scheme to driving electrodes. A touch driving circuit drives the driving electrodes in groups including a first group and a second group, supplies first driving signals based on a designated first frequency and first orthogonal codes set to correspond to the driving electrodes of the first group, respectively, to the driving electrodes of the first group, and supplies second multiple driving signals based on a second frequency orthogonal to the first frequency and second orthogonal codes set to correspond to the driving electrodes of the second group, respectively, to the driving electrodes of the second group.