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：US20220122513A1

公开(公告)日：2022-04-21

申请号：US17471997

申请日：2021-09-10

Applicant: SAMSUNG DISPLAY CO., LTD. ,  Korea University Research and Business Foundation

Inventor： YOUNG SOO HWANG ,  Joon Chul Goh ,  Oh Jo Kwon ,  Ki Duk Kim ,  Jeong Min Kim ,  Bong Hyun You ,  Hyung Min Lee ,  Seung Hun Choi

IPC: G09G3/20

Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.

公开(公告)号：US11200853B2

公开(公告)日：2021-12-14

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: G09G3/3233 ,  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：US11158248B2

公开(公告)日：2021-10-26

申请号：US16538597

申请日：2019-08-12

Applicant: Samsung Display Co., Ltd.

Inventor： Hyungryul Kang ,  Oh Jo Kwon ,  Yoshimura Hideo ,  Bong-Hyun You ,  Jaekeun Lim

IPC: G09G3/30 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device includes: a display panel including a plurality of pixels; a scan driver connected to the plurality of pixels through a plurality of scan lines; a data driver connected to the plurality of pixels through a plurality of data lines; an emission driver connected to the plurality of pixels through a plurality of emission control lines; a sensing circuit connected to the plurality of pixels through a plurality of sensing lines; and a controller configured to control the scan driver, the data driver, the emission driver and the sensing circuit, wherein, in an active period of each frame period, the scan driver sequentially applies a sensing pulse and a scan pulse to at least one scan line of the plurality of scan lines, and applies the scan pulse to remaining scan lines of the plurality of scan lines.

公开(公告)号：US11030950B2

公开(公告)日：2021-06-08

申请号：US16586534

申请日：2019-09-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Oh Jo Kwon ,  Joo Hyung Lee ,  Kyung Youl Min

IPC: G09G3/3233 ,  G09G3/3275 ,  G09G3/3291

Abstract: An organic light-emitting display includes: a display panel including first and second pixels, each having an organic light-emitting diode; and a data driver including a first operational amplifier having a non-inverting terminal coupled to a reference voltage terminal and an inverting terminal coupled to the first pixel, and a second operational amplifier having a non-inverting terminal coupled to the reference voltage terminal and an inverting terminal coupled to the second pixel. The first pixel includes a sensing transistor, a first driving transistor, and a first switch transistor. The second pixel includes a second driving transistor and a second switch transistor.

公开(公告)号：US10783827B2

公开(公告)日：2020-09-22

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 ,  G09G3/3216 ,  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：US09818341B2

公开(公告)日：2017-11-14

申请号：US14660808

申请日：2015-03-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Oh Jo Kwon ,  Kyung Youl Min ,  Choong Sun Shin ,  Young Uk Won

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0291 ,  G09G2320/0295

Abstract: An organic light-emitting display device includes: pixels; and a data driver including a plurality of current measurers connected to the pixels via at least one data line, each of the current measurers including: a first measurement circuit including: a first operational amplifier including a non-inverted input terminal to which a first reference voltage is applied, and an inverted input terminal connected to a first pixel from among the pixels; and a first feedback capacitor connected between the inverted input terminal and an output terminal of the first operational amplifier; and a second measurement circuit including: a second operational amplifier including a non-inverted input terminal to which a second reference voltage is applied, and an inverted input terminal connected to a second pixel from among the pixels; and a second feedback capacitor connected between the inverted input terminal and an output terminal of the second operational amplifier.

公开(公告)号：US09734765B2

公开(公告)日：2017-08-15

申请号：US14301311

申请日：2014-06-10

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

Inventor： Oh Jo Kwon ,  Choong Sun Shin ,  Hyun Sik Kim ,  Jun Suk Bang ,  Gyu Hyeong Cho

IPC: G06F3/038 ,  G09G5/00 ,  G09G3/3291 ,  G09G3/3233

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2310/0251 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043

Abstract: A display device includes: a plurality of pixels, each being coupled to a corresponding data line among a plurality of data lines and a corresponding scan line among a plurality of scan lines; a scan driver to supply a scan signal to the scan lines; a sensor coupled to the pixels and the data lines and configured to detect a sensing current according to a test signal input to the data lines; and a controller configured to detect a pixel current of a pixel corresponding to a scan line to which the scan signal is supplied, by using a first sensing current corresponding to a first pixel and a second sensing current corresponding to a second pixel, when the scan signal is selectively supplied to a first scan line coupled to the first pixel and a second scan line coupled to the second pixel.

公开(公告)号：US20160155381A1

公开(公告)日：2016-06-02

申请号：US14690303

申请日：2015-04-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Oh Jo Kwon ,  Joo Hyung Lee ,  Kyung Youl Min

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2330/12

Abstract: An organic light-emitting display includes: a display panel including first and second pixels, each having an organic light-emitting diode; and a data driver including a first operational amplifier having a non-inverting terminal coupled to a reference voltage terminal and an inverting terminal coupled to the first pixel, and a second operational amplifier having a non-inverting terminal coupled to the reference voltage terminal and an inverting terminal coupled to the second pixel. The first pixel includes a sensing transistor, a first driving transistor, and a first switch transistor. The second pixel includes a second driving transistor and a second switch transistor.

Abstract translation: 有机发光显示器包括：包括第一和第二像素的显示面板，每个具有有机发光二极管; 以及数据驱动器，其包括具有耦合到参考电压端子的非反相端子和耦合到所述第一像素的反相端子的第一运算放大器，以及耦合到所述参考电压端子的非反相端子的第二运算放大器和 耦合到第二像素的反相端子。 第一像素包括感测晶体管，第一驱动晶体管和第一开关晶体管。 第二像素包括第二驱动晶体管和第二开关晶体管。

公开(公告)号：US20160155380A1

公开(公告)日：2016-06-02

申请号：US14660808

申请日：2015-03-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Oh Jo Kwon ,  Kyung Youl Min ,  Choong Sun Shin ,  Young Uk Won

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0291 ,  G09G2320/0295

Abstract: An organic light-emitting display device includes: pixels; and a data driver including a plurality of current measurers connected to the pixels via at least one data line, each of the current measurers including: a first measurement circuit including: a first operational amplifier including a non-inverted input terminal to which a first reference voltage is applied, and an inverted input terminal connected to a first pixel from among the pixels; and a first feedback capacitor connected between the inverted input terminal and an output terminal of the first operational amplifier; and a second measurement circuit including: a second operational amplifier including a non-inverted input terminal to which a second reference voltage is applied, and an inverted input terminal connected to a second pixel from among the pixels; and a second feedback capacitor connected between the inverted input terminal and an output terminal of the second operational amplifier.

Abstract translation: 有机发光显示装置包括：像素; 以及数据驱动器，包括经由至少一个数据线连接到像素的多个电流测量器，每个电流测量器包括：第一测量电路，包括：第一运算放大器，包括非反相输入端，第一参考 施加电压，并且反相输入端子从像素中连接到第一像素; 以及连接在所述反相输入端子和所述第一运算放大器的输出端子之间的第一反馈电容器; 以及第二测量电路，包括：第二运算放大器，包括施加了第二参考电压的非反相输入端子和从像素中连接到第二像素的反相输入端子; 以及连接在所述反相输入端子和所述第二运算放大器的输出端子之间的第二反馈电容器。