公开(公告)号：US11348530B2

公开(公告)日：2022-05-31

申请号：US16707994

申请日：2019-12-09

Applicant: Samsung Display Co., Ltd.

Inventor： Yang Hwa Choi ,  Jun Hyun Park ,  Dong Woo Kim ,  Kang Moon Jo ,  Sung Jae Moon ,  An Su Lee ,  Woong Sik Choi

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

Abstract: A stage of a scan driver includes: a first driving controller for controlling a voltage of a first node and a voltage of a second node; a second driving controller for controlling a voltage of a first driving node, based on a sensing-on signal, a next carry signal, a first control clock signal, a second control clock signal, the voltage of the first node, and a voltage of a sampling node, and controlling a voltage of a second driving node, based on the voltage of the sampling node and the voltage of the first driving node; an output buffer for outputting a carry signal, the first scan signal, and the second scan signal; and a coupling controller. The second driving controller maintains the voltage of the first driving node as a gate-off voltage in response to the voltage of the second driving node and a third control clock signal.

公开(公告)号：US20160372047A1

公开(公告)日：2016-12-22

申请号：US14993046

申请日：2016-01-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong Woo Kim ,  Keum Nam Kim ,  Yang Hwa Choi

IPC: G09G3/3266 ,  G09G3/3258

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2300/0861 ,  G09G2310/0283 ,  G09G2320/045

Abstract: A method of driving an organic light emitting display device may include concurrently initializing pixels by adjusting a voltage level of a power voltage which is provided to the pixels during an initialization period of a (2k−1)-th image frame, sequentially writing a first data signal including the (2k−1)-th image frame into the pixels by sequentially performing a scanning operation on a plurality of scan lines in a first direction, displaying the (2k−1)-th image frame by sequentially providing an emission signal to emission lines in the first direction, concurrently initializing the pixels during an initialization period of a (2k)-th image frame, sequentially writing a second data signal including the (2k)-th image frame into the pixels by sequentially performing the scanning operation on the scan lines in a second direction, and displaying the (2k)-th image frame by sequentially providing the emission signal to the emission lines in the second direction.

Abstract translation: 驱动有机发光显示装置的方法可以包括通过在（2k-1）图像帧的初始化周期期间调整提供给像素的电源电压的电压电平来同时初始化像素，顺序地写入第一 通过在第一方向上对多个扫描线顺序执行扫描操作，将包括（2k-1）个图像帧的数据信号包括在像素中，通过顺序地提供发射信号来显示第（2k-1）个图像帧 在第（2k）图像帧的初始化期间同时初始化像素，顺序地将包括第（2k）个图像帧的第二数据信号写入像素中，以顺序地执行扫描操作 在第二方向上的扫描线上，并且通过在第二方向上顺序地向发射线提供发射信号来显示第（2k）个图像帧。

公开(公告)号：US12272297B2

公开(公告)日：2025-04-08

申请号：US18375566

申请日：2023-10-02

Applicant: Samsung Display Co., Ltd.

Inventor： Yang Hwa Choi ,  Bo Yong Chung

IPC: G09G3/32 ,  G09G3/3266

Abstract: A scan driver includes a first transistor including gate, first, and second electrodes coupled to a Q node, a scan clock line, and a scan line. A second transistor includes gate and first electrodes coupled to a scan carry line, and a second electrode coupled to the Q node. A third transistor includes gate and first electrodes coupled to a first control line and a sensing carry line. A fourth transistor includes a gate and first electrode coupled to the sensing carry line and the third transistor first electrode. A fifth transistor includes gate, first, and second electrodes coupled to a fourth transistor second electrode, a second control line, and a node. A capacitor includes first and second electrodes coupled to the fifth transistor first and gate electrodes. A sixth transistor includes gate, first, and second electrodes coupled to a third control line, the node, and the Q node.

公开(公告)号：US11183124B2

公开(公告)日：2021-11-23

申请号：US17065075

申请日：2020-10-07

Applicant: Samsung Display Co., LTD.

Inventor： Yang Hwa Choi ,  Bo Yong Chung ,  Tak Young Lee ,  Sang Uk Lim

IPC: G09G3/32 ,  G09G3/3266 ,  G09G3/3233

Abstract: A scan driver for a display device includes a plurality of stages outputting scan signals. A first stage of the plurality of stages includes first to sixth transistors connected to a first carry clock line, a carry line, a previous carry line, and a second carry clock line. In a first frame period, the second carry clock line is configured to receive a second carry clock signal having at least one pulse with substantially the same phase as at least one of first pulses of a first carry clock signal to be applied to the first carry clock line.

公开(公告)号：US11100847B2

公开(公告)日：2021-08-24

申请号：US16781187

申请日：2020-02-04

Applicant: Samsung Display Co., Ltd.

Inventor： Yang Hwa Choi ,  Sun Kwang Kim ,  Sang Jin Jeon

IPC: G09G3/32

Abstract: A scan driver includes two or more scan signal output circuits (SSOC), each being coupled to a first scan line (FSL) and a second scan line (SSL), and including a driving circuit, a first buffer circuit (FBC), and a second buffer circuit (SBC). The driving circuit applies a first driving signal (DS) to a first driving node (DN) and applies a second DS to a second DN based on an input signal, a clock signal (CS), a display-on signal, and an on-level voltage. The input signal is a scan start signal or a previous scan signal. The FBC outputs a sensing signal to the SSL based on the first DS, the second DS, an off-level voltage, and a sensing CS. The SBC outputs a scan signal to the FSL based on the first DS, the second DS, the off-level voltage, and a scan CS.

公开(公告)号：US11699399B2

公开(公告)日：2023-07-11

申请号：US17577301

申请日：2022-01-17

Applicant: Samsung Display Co., Ltd.

Inventor： Jong Hee Kim ,  Tak Young Lee ,  Bo Yong Chung ,  Yang Hwa Choi

IPC: G09G3/3266 ,  G09G3/3258

CPC classification number: G09G3/3266 ,  G09G3/3258 ,  G09G2310/0202

Abstract: A scan driver including a plurality of scan stages. A first scan stage among the plurality of scan stages includes first-to-sixth transistors and a first capacitor. The first transistor is connected to a first Q node, a first scan clock line, and a first scan line. A second transistor is connected to a first scan carry line and the first Q node. A third transistor is connected to a first sensing carry line and a second sensing carry line. A fourth transistor is connected to a first control line and the third transistor. A fifth transistor is connected to the fourth transistor, a second control line, and a first node. A first capacitor is connected to the fifth transistor. A sixth transistor is connected to a third control line, the first node, and the first Q node.

公开(公告)号：US20210065617A1

公开(公告)日：2021-03-04

申请号：US16941140

申请日：2020-07-28

Applicant: Samsung Display Co., Ltd.

Inventor： Yang Hwa Choi ,  Bo Yong Chung

IPC: G09G3/32

Abstract: A scan driver includes a first transistor including gate, first, and second electrodes coupled to a Q node, a scan clock line, and a scan line. A second transistor includes gate and first electrodes coupled to a scan carry line, and a second electrode coupled to the Q node. A third transistor includes gate and first electrodes coupled to a first control line and a sensing carry line. A fourth transistor includes a gate and first electrode coupled to the sensing carry line and the third transistor first electrode. A fifth transistor includes gate, first, and second electrodes coupled to a fourth transistor second electrode, a second control line, and a node. A capacitor includes first and second electrodes coupled to the fifth transistor first and gate electrodes. A sixth transistor includes gate, first, and second electrodes coupled to a third control line, the node, and the Q node.

公开(公告)号：US10777131B2

公开(公告)日：2020-09-15

申请号：US15215476

申请日：2016-07-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keum Nam Kim ,  Dong Woo Kim ,  Yang Hwa Choi

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3258 ,  G09G3/3275

Abstract: A pixel of an organic light emitting display device includes a first transistor connected between a data line and a first node, a second transistor connected between a second node and a third node, a third transistor connected between the second node and a fourth node, a fourth transistor connected between the first node and the second node, a fifth transistor connected between the third node and an initializing power source, a sixth transistor connected between a first power source and the third node, a capacitor connected between the first node and the fourth node, and an organic light emitting diode (OLED) connected between the second node and a second power source.

公开(公告)号：US11804170B2

公开(公告)日：2023-10-31

申请号：US17517734

申请日：2021-11-03

Applicant: Samsung Display Co., Ltd.

Inventor： Hyuk Kim ,  Yang Hwa Choi ,  Jung Hwan Hwang

IPC: G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G2320/0247 ,  G09G2340/0435

Abstract: A display device of the present inventive concept includes a processor supplying grayscale data in active periods of frame periods and stopping supply of the grayscale data in blank periods of the frame periods; a switch controller generating a first switch control signal when a blank period is longer than a predetermined period, and generating a second switch control signal when the blank period ends; a power supply supplying a voltage different from a first power voltage to a first power line when the first switch control signal is received and supplying the first power voltage to the first power line when the second switch control signal is received; and pixels commonly connected to the first power line.

公开(公告)号：US11227552B2

公开(公告)日：2022-01-18

申请号：US16903307

申请日：2020-06-16

Applicant: Samsung Display Co., LTD.

Inventor： Jong Hee Kim ,  Tak Young Lee ,  Bo Yong Chung ,  Yang Hwa Choi

IPC: G09G3/3266 ,  G09G3/3258

Abstract: A scan driver including a plurality of scan stages. A first scan stage among the plurality of scan stages includes first-to-sixth transistors and a first capacitor. The first transistor is connected to a first Q node, a first scan clock line, and a first scan line. A second transistor is connected to a first scan carry line and the first Q node. A third transistor is connected to a first sensing carry line and a second sensing carry line. A fourth transistor is connected to a first control line and the third transistor. A fifth transistor is connected to the fourth transistor, a second control line, and a first node. A first capacitor is connected to the fifth transistor. A sixth transistor is connected to a third control line, the first node, and the first Q node.