公开(公告)号：US20230008552A1

公开(公告)日：2023-01-12

申请号：US17855152

申请日：2022-06-30

Applicant: LG Display Co., Ltd.

Inventor： Chang Hee KIM ,  Ki Min SON

IPC: G09G3/3233 ,  G09G3/3291

Abstract: A pixel circuit and a display panel including the same are disclosed. The pixel circuit may include a driving element including a gate connected to a first node to which a data voltage is configured to be applied, a first electrode connected to a high-potential voltage line, and a second electrode connected to a second node; a first switch element connected between the second node and a third node; a second switch element connected between the second node and a fourth node; a third switch element connected between the fourth node and a reference voltage line; a first capacitor connected between the first node and the third node; and a second capacitor connected between the third node and the fourth node.

公开(公告)号：US20240105122A1

公开(公告)日：2024-03-28

申请号：US18531453

申请日：2023-12-06

Applicant: LG Display Co., Ltd.

Inventor： Ki Min SON ,  Chang Hee KIM ,  Seok NOH

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/021

Abstract: A pixel circuit comprises a first switch element comprising a first electrode to which an initialization voltage is applied, a gate electrode to which a initialization pulse is applied, and a second electrode connected to a second node; a second switch element comprising a first electrode connected to a third node or a fourth node, a gate electrode to which a sensing pulse is applied, and a second electrode to which a reference voltage is applied; a third switch element comprising a first electrode to which a data voltage is applied, a gate electrode to which a scan pulse is applied, and a second electrode connected to the second node; and a fourth switch element comprising a first electrode connected to the third node, a gate electrode to which a first emission control pulse is applied, and a second electrode connected to the fourth node.

公开(公告)号：US20230070020A1

公开(公告)日：2023-03-09

申请号：US17899548

申请日：2022-08-30

Applicant: LG Display Co., Ltd.

Inventor： Ki Min SON ,  Chang Hee KIM

IPC: G09G3/3258 ,  G09G3/3291 ,  G09G3/3266

Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit of the present disclosure includes: a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a second electrode connected to a third node; a first switch element configured to supply a data voltage of pixel data to a fourth node in response to a scan pulse; a second switch element configured to supply an initialization voltage to the second node in response to a first initialization pulse; a third switch element configured to supply a reference voltage lower than the initialization voltage to the third node in response to a sensing pulse; and a fourth switch element configured to supply the reference voltage to the fourth node in response to a second initialization pulse.

公开(公告)号：US20230009113A1

公开(公告)日：2023-01-12

申请号：US17852906

申请日：2022-06-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki Min SON ,  Chang Hee KIM

IPC: G09G3/3233 ,  G09G3/3283 ,  G09G3/3266

Abstract: A pixel circuit of a display device includes a driving element comprising a first electrode connected to a first node to which a pixel driving voltage is applied, a first gate electrode connected to a second node, a second electrode connected to a third node, and a second gate electrode connected to a fourth node, and configured to supply an electric current to a light-emitting element; a first switch element configured to be turned on according to a gate-on voltage and supply a data voltage to the second node; a first capacitor connected between the second node and the third node; a second capacitor connected between the third node and the fourth node; and a third capacitor connected between the fourth node and the first node, or between the fourth node and a power line to which the pixel driving voltage is applied.

公开(公告)号：US20250131883A1

公开(公告)日：2025-04-24

申请号：US18988159

申请日：2024-12-19

Applicant: LG Display Co., Ltd.

Inventor： Ki Min SON ,  Chang Hee KIM ,  Seok NOH

IPC: G09G3/3233 ,  G09G3/3266

Abstract: A pixel circuit comprises a first switch element comprising a first electrode to which an initialization voltage is applied, a gate electrode to which a initialization pulse is applied, and a second electrode connected to a second node; a second switch element comprising a first electrode connected to a third node or a fourth node, a gate electrode to which a sensing pulse is applied, and a second electrode to which a reference voltage is applied; a third switch element comprising a first electrode to which a data voltage is applied, a gate electrode to which a scan pulse is applied, and a second electrode connected to the second node; and a fourth switch element comprising a first electrode connected to the third node, a gate electrode to which a first emission control pulse is applied, and a second electrode connected to the fourth node.

公开(公告)号：US20240257749A1

公开(公告)日：2024-08-01

申请号：US18539482

申请日：2023-12-14

Applicant: LG Display Co., Ltd.

Inventor： Ki Min SON ,  Ki Bok PARK ,  Chang Hee KIM

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0452 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/061 ,  G09G2310/08

Abstract: Disclosed are a display panel, a pixel circuit arranged therein and a display device including the same. The display panel includes a sub-pixel of a first color, a sub-pixel of a second color, and a sub-pixel of a third color. Each of the sub-pixels of the first color, the second color, and the third color includes: a driving element including a first electrode coupled to a first node, a gate electrode coupled to a second node, and a second electrode coupled to a third node. The display panel includes a light emitting element including an anode electrode connected to the fourth node and configured to be driven by a current from the driving element; a first capacitor connected between the second node and the third node; and a second capacitor coupled between a constant voltage line and the third node or between the third node and the fourth node.

公开(公告)号：US20230073753A1

公开(公告)日：2023-03-09

申请号：US17893987

申请日：2022-08-23

Applicant: LG Display Co., Ltd.

Inventor： Ki Min SON ,  Chang Hee KIM ,  Ki Bok PARK

IPC: G09G3/3233

Abstract: A pixel circuit and a display device including the pixel circuit are discussed. The pixel circuit can include a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a second electrode connected to a third node; a first switch element including a first electrode connected to the third node, a gate electrode to which a first light emission control pulse is applied, and a second electrode connected to a fourth node; a second switch element including a first electrode connected to the third node, a gate electrode to which a second light emission control pulse is applied, and a second electrode connected to a fifth node; and a light emitting device including an anode connected to the fifth node, and a cathode electrode to which a low potential power voltage is applied.

公开(公告)号：US20240169919A1

公开(公告)日：2024-05-23

申请号：US18477396

申请日：2023-09-28

Applicant: LG Display Co., Ltd.

Inventor： Ki Min SON ,  Chang Hee KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0443

Abstract: A pixel circuit and a display panel including the same are disclosed. The display panel includes: an individual switch element configured to supply a pixel driving voltage to a first sub-pixel in response to a gate signal; and a shared switch element configured to supply the pixel driving voltage to second and third sub-pixels in response to the gate signal. Each of the individual switch element and the shared switch element is a transistor having a channel width. The channel width of the shared switch element is larger than the channel width of the individual switch element.

公开(公告)号：US20240013720A1

公开(公告)日：2024-01-11

申请号：US18369257

申请日：2023-09-18

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki Min SON ,  Chang Hee KIM

IPC: G09G3/3233 ,  G09G3/3283 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3283 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2300/0426 ,  G09G2300/0861 ,  G09G2310/0297 ,  G09G2310/08

Abstract: A pixel circuit of a display device includes a driving element comprising a first electrode connected to a first node to which a pixel driving voltage is applied, a first gate electrode connected to a second node, a second electrode connected to a third node, and a second gate electrode connected to a fourth node, and configured to supply an electric current to a light-emitting element; a first switch element configured to be turned on according to a gate-on voltage and supply a data voltage to the second node; a first capacitor connected between the second node and the third node; a second capacitor connected between the third node and the fourth node; and a third capacitor connected between the fourth node and the first node, or between the fourth node and a power line to which the pixel driving voltage is applied.