公开(公告)号：US20250104648A1

公开(公告)日：2025-03-27

申请号：US18740299

申请日：2024-06-11

Applicant: Samsung Display Co., LTD.

Inventor： JUNGHWAN HWANG

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A gate driver includes at least one stage including: a first transistor including a control electrode receiving a first clock signal, a first electrode receiving a previous stage gate signal, and a second electrode connected to a first node; a third transistor including a control electrode directly receiving the first clock signal, a first electrode receiving a first power voltage, and a second electrode connected to a third node; a fourth transistor including a control electrode connected to a second node, a first electrode receiving a second clock signal different from the first clock signal, and a second electrode connected to the third node; and a first capacitor including a first electrode connected to the second node and a second electrode connected to the third node, wherein the least one stage outputs a voltage of the third node as a gate signal.

公开(公告)号：US20210256926A1

公开(公告)日：2021-08-19

申请号：US17088182

申请日：2020-11-03

Applicant: Samsung Display Co., Ltd.

Inventor： HUIGYEONG YUN ,  JUNGHWAN HWANG

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/133 ,  G02F1/1343

Abstract: The present disclosure provides a display device. The display device includes a display panel including each of gate lines extending in a first direction, each of sub-gate lines which extends in a second direction crossing the first direction and is electrically connected to the gate line, each of first data lines, each of second data lines, each of first pixels, and each of second pixels, and a driving circuit for providing a gate signal and data signals, wherein a second capacitance between a second drain electrode and a second gate electrode of the second pixel is greater than a first capacitance between a first drain electrode and a first gate electrode of the first pixel.

公开(公告)号：US20230145013A1

公开(公告)日：2023-05-11

申请号：US18092402

申请日：2023-01-02

Applicant: Samsung Display Co., Ltd.

Inventor： JUNGHWAN HWANG

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0413 ,  G09G2310/08 ,  G09G2310/0275

Abstract: A gate driver includes a plurality of active stages and a plurality of dummy stages. The active stage is configured to output a plurality of gate signals to a display region. The dummy stage is c connected to respective active stages and configured to output a plurality of dummy carry signals to the respective active stages. The active stage is configured to output the plurality of gate signals and a plurality of active carry signals. The plurality of dummy stages are configured to output the plurality of dummy carry signals, respectively, and not to output any gate signal.

公开(公告)号：US20220343857A1

公开(公告)日：2022-10-27

申请号：US17720907

申请日：2022-04-14

Applicant: Samsung Display Co., Ltd.

Inventor： YANG-HWA CHOI ,  HYUK KIM ,  JUNGHWAN HWANG

IPC: G09G3/3266

Abstract: A display device includes a plurality of pixels connected to a plurality of first scan lines, a plurality of second scan lines, and a plurality of data lines, where the pixels are arranged in a plurality of rows, a plurality of first stages connected to the first scan lines, a plurality of second stages connected to the second scan lines, and a data driver connected to the data lines. Each of the first scan lines is connected to pixels arranged in a corresponding row among the rows. Each of the second scan lines is commonly connected to pixels arranged in corresponding 8h rows among the plurality of rows, where h is a natural number.

公开(公告)号：US20220335898A1

公开(公告)日：2022-10-20

申请号：US17572938

申请日：2022-01-11

Applicant: Samsung Display Co., Ltd.

Inventor： JUNGHWAN HWANG ,  YANG-HWA CHOI

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A pixel includes a first transistor, a second transistor, a third transistor, a capacitor, and a light emitting diode. During a non-emission period of a low frequency mode, the third transistor electrically connects a first terminal of the light emitting diode to an initialization voltage line in response to a second scan signal. An initialization voltage transferred from the initialization voltage line has a first voltage level during a normal mode different from the low frequency mode, and has a second voltage level different from the first voltage level during the non-emission period of the low frequency mode.

公开(公告)号：US20220351674A1

公开(公告)日：2022-11-03

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：US20220115494A1

公开(公告)日：2022-04-14

申请号：US17361712

申请日：2021-06-29

Applicant: Samsung Display Co., LTD.

Inventor： HYUK KIM ,  YANG-HWA CHOI ,  JUNGHWAN HWANG

IPC: H01L27/32

Abstract: A display device includes: a plurality of pixels disposed in a display area; a plurality of first voltage lines electrically connected to the plurality of pixels, the plurality of first voltage lines including a plurality of first common voltage lines extending in a first direction and a plurality of second common voltage lines extending in a second direction intersecting the first direction; and a plurality of second voltage lines electrically connected to the pixels, the plurality of second voltage lines including a plurality of first driving voltage lines extending in the first direction and a plurality of second driving voltage lines extending in the second direction. The number of the first common voltage lines are greater than the number of the first driving voltage lines.

公开(公告)号：US20210319737A1

公开(公告)日：2021-10-14

申请号：US17143207

申请日：2021-01-07

Applicant: Samsung Display Co., Ltd.

Inventor： JUNGHWAN HWANG

IPC: G09G3/20

Abstract: A gate driver includes a plurality of active stages and a plurality of dummy stages. The active stage is configured to output a plurality of gate signals to a display region. The dummy stage is c connected to respective active stages and configured to output a plurality of dummy carry signals to the respective active stages. The active stage is configured to output the plurality of gate signals and a plurality of active carry signals. The plurality of dummy stages are configured to output the plurality of dummy carry signals, respectively, and not to output any gate signal.