公开(公告)号：US20240029651A1

公开(公告)日：2024-01-25

申请号：US18219544

申请日：2023-07-07

Applicant: LG Display Co., Ltd. ,  Industry-University Cooperation Foundation Hanyang University

Inventor： Harkjin Kim ,  Kwanghwan Ji ,  Byong-Deok Choi ,  Bum Sik Kim ,  Dong-Young Kim ,  Yong Duck Kim ,  June Hee Lee

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

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2310/08 ,  G09G2300/0842

Abstract: Disclosed are a display device and a method for driving a pixel of the display device. The device and method is capable of securing a time to sense a threshold voltage of a driving transistor and of compensating for the threshold voltage during operation of the pixel. Each of a plurality of pixels has a 5T1C structure including first to fourth transistors and a driving transistor. The first to fourth transistors are configured to apply driving signals through first to fourth scan lines, respectively. Thus, even without increasing the number of driving signals applied to each pixel, a long time for sensing a threshold voltage of each pixel can be secured.

公开(公告)号：US10236310B2

公开(公告)日：2019-03-19

申请号：US15824974

申请日：2017-11-28

Applicant: LG Display Co., Ltd.

Inventor： SeHee Park ,  HongRak Choi ,  PilSang Yun ,  HyungJoon Koo ,  Kwanghwan Ji ,  Jaeyoon Park

IPC: H01L27/12 ,  H01L27/32 ,  H01L29/49 ,  H01L29/78 ,  H01L51/56 ,  H01L29/417 ,  H01L27/07 ,  H01L29/786

Abstract: Disclosed are a transistor substrate, an organic light emitting display panel including the same, a method of manufacturing the transistor substrate, and an organic light emitting display device including the organic light emitting display panel, in which a driving transistor and a switching transistor are provided and each include an oxide semiconductor of which both ends are covered by an insulation layer, and a gate of the driving transistor and a gate of the switching transistor are provided on different layers.

公开(公告)号：US12057071B2

公开(公告)日：2024-08-06

申请号：US18219544

申请日：2023-07-07

Applicant: LG Display Co., Ltd. ,  Industry-University Cooperation Foundation Hanyang University

Inventor： Harkjin Kim ,  Kwanghwan Ji ,  Byong-Deok Choi ,  Bum Sik Kim ,  Dong-Young Kim ,  Yong Duck Kim ,  June Hee Lee

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2310/08

Abstract: Disclosed are a display device and a method for driving a pixel of the display device. The device and method is capable of securing a time to sense a threshold voltage of a driving transistor and of compensating for the threshold voltage during operation of the pixel. Each of a plurality of pixels has a 5T1C structure including first to fourth transistors and a driving transistor. The first to fourth transistors are configured to apply driving signals through first to fourth scan lines, respectively. Thus, even without increasing the number of driving signals applied to each pixel, a long time for sensing a threshold voltage of each pixel can be secured.

公开(公告)号：US10680117B2

公开(公告)日：2020-06-09

申请号：US16199945

申请日：2018-11-26

Applicant: LG Display Co., Ltd.

Inventor： Kwanghwan Ji

IPC: H01L29/786 ,  H01L29/66 ,  G09G3/36 ,  H01L29/49 ,  H01L29/51 ,  H01L29/423

Abstract: A thin film transistor is disclosed, which includes an oxide semiconductor layer on a substrate; a gate insulating film on the oxide semiconductor layer; a gate electrode on the gate insulating film; a hydrogen supply layer on the gate insulating film; a source electrode connected with the oxide semiconductor layer; and a drain electrode spaced apart from the source electrode and connected with the oxide semiconductor layer, wherein the oxide semiconductor layer includes a channel portion overlapped with the gate electrode and a connecting portion not overlapped with the gate electrode, a hydrogen concentration of the connecting portion is higher than that of the channel portion, and the gate insulating film includes a first area overlapped with the gate electrode and a second area not overlapped with the gate electrode, and a hydrogen concentration of the second area is higher that of the first area.

公开(公告)号：US20180175077A1

公开(公告)日：2018-06-21

申请号：US15828207

申请日：2017-11-30

Applicant: LG Display Co., Ltd.

Inventor： HyungJoon Koo ,  SeHee Park ,  Kwanghwan Ji ,  PilSang Yun ,  Jaeyoon Park ,  HongRak Choi

IPC: H01L27/12

CPC classification number: H01L27/1255 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1251 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3272 ,  H01L29/78633 ,  H01L29/78648 ,  H01L29/7869

Abstract: Disclosed is a thin film transistor substrate which facilitates to realize a bottom gate structure where a gate electrode is disposed below an active layer, and to increase an area for a storage capacitor, and a display device including the same, wherein the thin film transistor substrate may include a light shielding layer, a buffer layer for covering the light shielding layer, and a driving transistor prepared on the buffer layer while being overlapped with the light shielding layer, and provided to supply a driving current to an organic light emitting device.

公开(公告)号：US11676970B2

公开(公告)日：2023-06-13

申请号：US17671452

申请日：2022-02-14

Applicant: LG Display Co. Ltd.

Inventor： Kwanghwan Ji ,  HongRak Choi ,  Jeyong Jeon ,  Jaeyoon Park

IPC: H01L27/12 ,  H01L29/417 ,  H01L29/45 ,  H01L29/66 ,  H01L29/78 ,  H01L49/02 ,  H01L29/786

CPC classification number: H01L27/1225 ,  H01L27/1255 ,  H01L27/1288 ,  H01L28/60 ,  H01L29/41733 ,  H01L29/45 ,  H01L29/66969 ,  H01L29/7869

Abstract: A panel comprises a substrate; a transistor disposed on the substrate and including: a source electrode, a drain electrode, a gate electrode, a gate insulation layer, an active layer, an auxiliary source electrode configured to electrically connect one end of the active layer to the source electrode, and an auxiliary drain electrode configured to electrically connect an other end of the active layer to the drain electrode; and a capacitor disposed on the substrate and including a first plate and a second plate. The first plate of the capacitor is made of a same material as the auxiliary source electrode and the auxiliary drain electrode.

公开(公告)号：US10396099B2

公开(公告)日：2019-08-27

申请号：US15391636

申请日：2016-12-27

Applicant: LG Display Co., Ltd.

Inventor： JongUk Bae ,  YongHo Jang ,  JunHyeon Bae ,  Kwanghwan Ji ,  PilSang Yun ,  Jiyong Noh

IPC: H01L27/12 ,  G02F1/1368 ,  H01L27/32 ,  G02F1/1362 ,  H01L29/786 ,  G09G3/36 ,  G09G3/3266 ,  G09G3/3258 ,  G09G3/3275 ,  H01L29/417 ,  H01L29/66

Abstract: Disclosed are an oxide thin film transistor (TFT), a method of manufacturing the same, and a display panel and a display device using the same, in which a first conductor and a second conductor are provided at end portions of a semiconductor layer formed of oxide semiconductor. The first conductor and second conductor are electrically connected to a first electrode and a second electrode, and covered by a gate insulation layer. The oxide TFT includes a semiconductor layer provided on a buffer and including an oxide semiconductor, a gate insulation layer covering the semiconductor layer and the buffer, a gate electrode provided on the gate insulation layer to overlap a portion of the semiconductor layer, and a passivation layer covering the gate and the gate insulation layer.

公开(公告)号：US20180151114A1

公开(公告)日：2018-05-31

申请号：US15828194

申请日：2017-11-30

Applicant: LG Display Co., Ltd.

Inventor： HongRak Choi ,  SeHee Park ,  PilSang Yun ,  HyungJoon Koo ,  Kwanghwan Ji ,  Jaeyoon Park

IPC: G09G3/325 ,  H01L27/32

Abstract: Disclosed are a transistor assembly, an organic light emitting display panel including the same, and an organic light emitting display device including the organic light emitting display panel, in which a first electrode of a switching transistor is used as a gate of a driving transistor.

公开(公告)号：US11854497B2

公开(公告)日：2023-12-26

申请号：US18012550

申请日：2021-06-21

Applicant: LG DISPLAY CO., LTD. ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY

Inventor： Joon-Hyuk Chang ,  Kwanghwan Ji ,  Kwan-Ho Park ,  Kiseok Chang ,  Junghoon Seo ,  Kipyo Hong ,  Hyojung Park ,  Seunghyuck Lee

IPC: G09G3/3291 ,  G06N3/08 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G06N3/08 ,  G09G3/3266 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/046 ,  G09G2360/16

Abstract: The present invention relates to a display apparatus that allows a compensated data voltage to be supplied to each pixel by compensating for the data voltage so as to prevent burn-in from occurring in a display panel, a method for compensating a data signal thereof, and a method for generating a deep learning-based compensation model. To implement same, the present invention provides the display apparatus comprising a timing controller having mounted therein the compensation model generated by learning, in a deep learning method, the temperature, time, average brightness, and data voltage for each pixel. Accordingly, the present invention has an effect of preventing burn-in from occurring in each pixel by supplying each pixel with the compensated data voltage generated via the compensation model.

公开(公告)号：US10741126B2

公开(公告)日：2020-08-11

申请号：US15828194

申请日：2017-11-30

Applicant: LG Display Co., Ltd.

Inventor： HongRak Choi ,  SeHee Park ,  PilSang Yun ,  HyungJoon Koo ,  Kwanghwan Ji ,  Jaeyoon Park

IPC: G09G3/325 ,  H01L27/32 ,  H01L27/12 ,  G09G3/3233 ,  G02F1/1676

Abstract: Disclosed are a transistor assembly, an organic light emitting display panel including the same, and an organic light emitting display device including the organic light emitting display panel, in which a first electrode of a switching transistor is used as a gate of a driving transistor.