公开(公告)号：US20170294165A1

公开(公告)日：2017-10-12

申请号：US15299250

申请日：2016-10-20

Applicant: Samsung Display Co., Ltd.

Inventor： Jun-Hyun Park ,  Sung-Hwan Kim ,  Kyoung-Ju Shin ,  Sang-Uk Lim ,  Yang-Hwa Choi

IPC: G09G3/3266 ,  G09G3/3291 ,  G09G3/3233 ,  G09G3/325

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G3/325 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0214 ,  G11C19/28

Abstract: A gate driver includes a plurality of stages outputting a plurality of gate output signals, respectively. Each stage includes a first input circuit applying an input signal to a first node in response to a first clock signal, a second input circuit applying the first clock signal to a second node in response to a voltage of the first node, a first output circuit controlling a gate output signal to a first logic level in response to the voltage of the first node, a second output circuit controlling the gate output signal to a second logic level in response to a voltage of the second node, and a leakage current blocking circuit applying a first power voltage corresponding to the first logic level to the first input circuit in response to the voltage of the first node.

公开(公告)号：US09626903B2

公开(公告)日：2017-04-18

申请号：US14195654

申请日：2014-03-03

Applicant: Samsung Display Co., Ltd.

Inventor： Soon-Dong Kim ,  Yang-Hwa Choi ,  Cheol-Min Kim ,  Hyung-Ryul Kang

IPC: G09G3/30 ,  G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0852

Abstract: An organic light-emitting diode (OLED) display panel is disclosed. In one aspect, the panel includes a first transistor which receives a data signal transferred through a data line in response to a scan signal transferred through a gate line and a second transistor which receives a first power signal in response to a bias signal and outputs a source-driving signal. The panel also includes a third transistor which receives the source-driving signal in response to an output signal of the first transistor and outputs a driving signal, an organic light-emitting element which comprises a first electrode being connected to the third transistor and which receives the driving signal and a second electrode which receives a second power signal. The panel further includes a fourth transistor which is electrically connected to the third transistor and which receives the driving signal.

公开(公告)号：US10950180B2

公开(公告)日：2021-03-16

申请号：US16272452

申请日：2019-02-11

Applicant: Samsung Display Co., Ltd.

Inventor： Junhyun Park ,  Cheol-Gon Lee ,  Yang-Hwa Choi

IPC: G09G3/32 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/36 ,  H01L27/32 ,  G09G3/3275

Abstract: A display panel includes a plurality of pixels each including a first transistor between a first node and a second node and having a gate electrode to receive the scan signal, a second transistor between the second node and a third node in series with the first transistor and having a gate electrode to receive the initialization control signal, a driving transistor between the first power voltage providing line and the third node and having a gate electrode connected to the first node, a third transistor between the third node and a fourth node and having a gate electrode to receive the emission control signal, an organic light emitting diode, between the fourth node and the second power voltage providing line, a first capacitor between the first power voltage providing line and the first node, and a second capacitor between the second node and one of the data lines.

公开(公告)号：US10650738B2

公开(公告)日：2020-05-12

申请号：US16234327

申请日：2018-12-27

Applicant: Samsung Display Co., Ltd.

Inventor： Junhyun Park ,  Cheol-Gon Lee ,  Yang-Hwa Choi

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

Abstract: A pixel circuit includes three transistors, a capacitor, and an OLED. The first transistor includes a gate terminal for receiving a first control signal, a first terminal connected to a first node, and a second terminal connected to a second node. The second transistor includes a gate terminal for receiving a second control signal, a first terminal connected to the second node, and a second terminal connected to a third node. The third transistor includes a gate terminal connected to the first node, a first terminal for receiving a first power signal, and a second terminal connected to the third node. The capacitor may receive an initialization signal and is connected to the first node. The OLED is connected to the third node and may receive a second power signal. The control signals have same voltage levels in a data writing period and have different voltage levels in other periods.

公开(公告)号：US09449558B2

公开(公告)日：2016-09-20

申请号：US14579619

申请日：2014-12-22

Applicant: Samsung Display Co., Ltd.

Inventor： Yang-Hwa Choi

IPC: G09G3/32 ,  G09G3/36 ,  G11C19/28

CPC classification number: G09G3/3266 ,  G09G3/3677 ,  G09G2310/0286 ,  G11C19/28

Abstract: A scan driver and display device using the same are disclosed. In one aspect, the scan driver includes a plurality of stages. Each stage includes a first transistor electrically connected between a first voltage input terminal and an output terminal, wherein the first transistor comprises a gate electrode electrically connected to a first node. Each stage also includes a second transistor electrically connected between the output terminal and a second clock signal input terminal and having a gate electrode electrically connected to a second node. Furthermore, each stage includes third and fourth transistors electrically connected in series. Each stage further includes a fifth transistor having first and second electrodes and a gate electrode electrically connected to the second node, the first electrode is electrically connected between the third and fourth transistors, and the second electrode is electrically connected to a second voltage input terminal configured to receive a second voltage.

Abstract translation: 公开了一种使用其的扫描驱动器和显示装置。 在一个方面，扫描驱动器包括多个级。 每个级包括电连接在第一电压输入端和输出端之间的第一晶体管，其中第一晶体管包括电连接到第一节点的栅电极。 每个级还包括电连接在输出端和第二时钟信号输入端之间并具有电连接到第二节点的栅电极的第二晶体管。 此外，每个级包括串联电连接的第三和第四晶体管。 每个级还包括具有第一和第二电极的第五晶体管和与第二节点电连接的栅电极，第一电极电连接在第三和第四晶体管之间，第二电极电连接到配置的第二电压输入端 以接收第二电压。

公开(公告)号：US20140292624A1

公开(公告)日：2014-10-02

申请号：US14033394

申请日：2013-09-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yang-Hwa Choi ,  Cheol-Min Kim

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2360/16

Abstract: An organic light emitting display device includes: pixels at crossing regions of data lines and scan lines, each of the pixels including an organic light emitting diode (OLED); a scan driver configured to drive the scan lines; a data driver configured to drive the data lines; a control line driving unit configured to drive control lines; and a compensation unit configured to extract at least one of deterioration information of the OLED or threshold voltage information of a driving transistor from at least one of the pixels during a sensing period. The data driver is further configured to supply a same first data signal to each of the pixels other than the at least one of the pixels in the sensing period.

Abstract translation: 有机发光显示装置包括：数据线和扫描线的交叉区域的像素，每个像素包括有机发光二极管（OLED）; 配置为驱动扫描线的扫描驱动器; 配置为驱动数据线的数据驱动器; 配置为驱动控制线的控制线驱动单元; 以及补偿单元，被配置为在感测周期期间从至少一个像素提取OLED的劣化信息或驱动晶体管的阈值电压信息中的至少一个。 数据驱动器还被配置为向感测周期中的至少一个像素以外的每个像素提供相同的第一数据信号。

公开(公告)号：US11501699B1

公开(公告)日：2022-11-15

申请号：US17683763

申请日：2022-03-01

Applicant: Samsung Display Co., Ltd.

Inventor： Yang-Hwa Choi ,  Junghwan Hwang

IPC: G09G3/32

Abstract: A display device includes a display panel including a pixel and a panel driver which drives the display panel at a first panel frequency in a first driving mode and drives the display panel at a second panel frequency in a second driving mode. The pixel includes a light emitting element and first, second, third, and fourth transistors. The first transistor is connected between a power line and the light emitting element. The second transistor is connected between a data line and the first transistor and receives a first scan signal. The third transistor is connected between the first transistor and an initialization voltage line and receives a second scan signal. The fourth transistor is connected between the first transistor and a reset voltage line and receives a third scan signal. The third scan signal is inactivated in the first driving mode and is activated in the second driving mode.

公开(公告)号：US20220351680A1

公开(公告)日：2022-11-03

申请号：US17707906

申请日：2022-03-29

Applicant: Samsung Display Co., Ltd.

Inventor： Yang-Hwa Choi ,  Hyuk Kim ,  Junghwan Hwang

IPC: G09G3/3233

Abstract: An electronic device includes a pixel driving circuit to operate in a light emitting mode or a sensing mode and including a reference voltage line for receiving a reference voltage comprising a first reference voltage and a second reference voltage different from the first reference voltage and a light emitting diode including a first electrode, a light emitting element, and a second electrode. The light emitting diode has in an on-state or an off-state in the light emitting mode, the first reference voltage is applied to the reference voltage line in the light emitting mode, a first voltage is applied to the first electrode in the off-state, a second voltage is applied to the first electrode in the on-state, the sensing mode includes an initialization period and a sensing period, and the second reference voltage is applied to the reference voltage line in the initialization period.

公开(公告)号：US09634272B2

公开(公告)日：2017-04-25

申请号：US14959864

申请日：2015-12-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yang-Hwa Choi ,  Keum Nam Kim

IPC: H01L51/05 ,  H01L51/00 ,  H01L27/32

CPC classification number: H01L51/055 ,  H01L27/3262 ,  H01L51/0097 ,  H01L2251/5338 ,  Y02E10/549

Abstract: A foldable display according to the present disclosure includes: a substrate having a folding portion which is folded; and a plurality of transistors in the substrate each of the transistors including: a gate electrode on the substrate; a channel overlapping the gate electrode; and a source electrode and a drain electrode positioned at respective sides of the channel, wherein the gate electrode is divided into a plurality of sub-gate electrodes by at least one gate cutout.

公开(公告)号：US09520082B2

公开(公告)日：2016-12-13

申请号：US14033394

申请日：2013-09-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yang-Hwa Choi ,  Cheol-Min Kim

IPC: G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2360/16

Abstract: An organic light emitting display device includes: pixels at crossing regions of data lines and scan lines, each of the pixels including an organic light emitting diode (OLED); a scan driver configured to drive the scan lines; a data driver configured to drive the data lines; a control line driving unit configured to drive control lines; and a compensation unit configured to extract at least one of deterioration information of the OLED or threshold voltage information of a driving transistor from at least one of the pixels during a sensing period. The data driver is further configured to supply a same first data signal to each of the pixels other than the at least one of the pixels in the sensing period.

Abstract translation: 有机发光显示装置包括：数据线和扫描线的交叉区域的像素，每个像素包括有机发光二极管（OLED）; 配置为驱动扫描线的扫描驱动器; 配置为驱动数据线的数据驱动器; 配置为驱动控制线的控制线驱动单元; 以及补偿单元，被配置为在感测周期期间从至少一个像素提取OLED的劣化信息或驱动晶体管的阈值电压信息中的至少一个。 数据驱动器还被配置为向感测周期中的至少一个像素以外的每个像素提供相同的第一数据信号。