公开(公告)号：US20230337482A1

公开(公告)日：2023-10-19

申请号：US18157571

申请日：2023-01-20

Applicant: LG Display Co., Ltd.

Inventor： Min-Gu Kang ,  SeungChan Choi ,  Younghyun Ko ,  Uyhyun Choi ,  Jaeman Jang

IPC: H10K59/126 ,  H10K59/121 ,  H01L29/786 ,  H01L29/417

CPC classification number: H10K59/126 ,  H10K59/1213 ,  H01L29/7869 ,  H01L29/78696 ,  H01L29/78672 ,  H01L29/78633 ,  H01L29/41733

Abstract: An organic light emitting display device is disclosed that uses a hybrid type thin film transistor. The organic light emitting display device includes a conductive pattern with a higher etch resistance compared to an inorganic thin film in an upper edge of a semiconductor pattern, and is thereby capable of simplifying a manufacturing process of a substrate on which an array of hybrid type thin film transistors each including multiple layers is disposed, and improving the performance of thin film transistors formed on the array substrate. The organic light emitting display device can represent a variety of grayscale images at low grayscales as a driving thin film transistor including an oxide semiconductor pattern is designed to have an increased s-factor value.

公开(公告)号：US10916218B2

公开(公告)日：2021-02-09

申请号：US15634576

申请日：2017-06-27

Applicant: LG DISPLAY CO., LTD.

Inventor： KiTae Kim ,  SeungChan Choi ,  JunHo Lee ,  SungBin Ryu ,  Siu Yoon

IPC: G09G5/10 ,  G09G3/3266 ,  G09G3/3233

Abstract: Provided is an organic light emitting display. The organic light emitting display can include a gate driving circuit configured to supply a gate signal through each of a plurality of gate lines connected to a display panel, and a luminance control unit between the gate driving circuit and the display panel and electrically connected to the plurality of gate lines and a power supply line. A gate signal is supplied to the pixels in a distributed manner during a plurality of refresh periods. Therefore, it is possible to reduce a luminance decrease in the pixels during the entire refresh period.

公开(公告)号：US20240204076A1

公开(公告)日：2024-06-20

申请号：US18461336

申请日：2023-09-05

Applicant: LG Display Co., Ltd.

Inventor： KyungChul Ok ,  Uyhyun Choi ,  SeungChan Choi ,  Min-Gu Kang ,  Jaeman Jang ,  DaeHwan Kim ,  Seoyeon Im

IPC: H01L29/49 ,  H01L29/40 ,  H01L29/423 ,  H01L29/66 ,  H01L29/786

CPC classification number: H01L29/4908 ,  H01L29/401 ,  H01L29/42384 ,  H01L29/66969 ,  H01L29/78606 ,  H01L29/7869 ,  H01L21/02126

Abstract: The thin film transistor, fabrication method thereof, and display apparatus comprising the same are provided. The thin film transistor comprises a base substrate, an oxide semiconductor layer on the base substrate, a channel protection layer in contact with the oxide semiconductor layer, and a gate electrode spaced apart from the oxide semiconductor layer and at least partially overlapped with the oxide semiconductor layer, and the channel protection layer includes carbon.

公开(公告)号：US11514858B2

公开(公告)日：2022-11-29

申请号：US17404721

申请日：2021-08-17

Applicant: LG DISPLAY CO., LTD.

Inventor： Min-Gu Kang ,  SeungChan Choi ,  Younghyun Ko

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A display device and a driving method for a display device are provided. The display device uses a second storage capacitor and stably moves the threshold voltage of the driving transistor to a positive value in a diode-connected driving circuit. Accordingly, a compensation performance of a threshold voltage of a driving transistor may be improved.

公开(公告)号：US20230134901A1

公开(公告)日：2023-05-04

申请号：US17969499

申请日：2022-10-19

Applicant: LG Display Co., Ltd.

Inventor： Younghyun Ko ,  Jaeman Jang ,  SeungChan Choi ,  Min-Gu Kang ,  Sungju Choi

IPC: H01L27/32

Abstract: A thin film transistor and a display device comprising the same is disclosed. The thin film transistor comprises an active layer on a substrate, and a first gate electrode at least partially overlapped with the active layer, wherein the active layer includes a channel portion, a first connection portion that is in contact with one side of the channel portion, and a second connection portion that is in contact with the other side of the channel portion, and an effective gate voltage applied to a first area of the channel portion, which is in contact with the first connection portion, is greater than that applied to a second area of the channel portion, which is in contact with the second connection portion.

公开(公告)号：US11521548B2

公开(公告)日：2022-12-06

申请号：US17408136

申请日：2021-08-20

Applicant: LG Display Co., Ltd.

Inventor： Min-Gu Kang ,  SeungChan Choi

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

Abstract: Embodiments of the present disclosure relate to a display device and a driving method of the display device. More particularly, a subpixel includes a first control transistor for controlling a connection between a body of a driving transistor and a first node of the driving transistor, and a second control transistor for controlling a connection between the body of the driving transistor and a second node of the driving transistor, so that it is possible to improve mobility and on-current performance while increasing a S-factor of the driving transistor.

公开(公告)号：US10388219B2

公开(公告)日：2019-08-20

申请号：US15634736

申请日：2017-06-27

Applicant: LG DISPLAY CO., LTD.

Inventor： JunHo Lee ,  SeungChan Choi ,  SungBin Ryu ,  KiTae Kim ,  Siu Yoon

IPC: G09G3/3225 ,  G09G3/3233

Abstract: Provided is an organic light emitting display (OLED) device that can include a timing controller configured to generate control signals to be applied to a plurality of pixels, each pixel including a pixel driving circuit. An adjusted initialization voltage is input to a circuit driving circuit of the OLED device during an initialization period. Thus, a delay of a current flowing in an organic light emitting diode can be improved such that a flicker phenomenon can be suppressed or minimized.