公开(公告)号：US12148385B2

公开(公告)日：2024-11-19

申请号：US18464047

申请日：2023-09-08

Applicant: LG Display Co., Ltd.

Inventor： Hyun Soo Lee ,  Seo Jun Yeom

IPC: G09G3/3233 ,  G09G3/3291

Abstract: A sensing circuit and a display device including the same are disclosed. The sensing circuit includes: a first external power line connected to a pixel power line applying a pixel driving voltage to pixels; a second external power line connected to the pixel power line; a first selection switch element connected between the first external power line and a voltage source; a current sensor connected to the second external power line; and a second selection switch element connected between the current sensor and the voltage source, wherein the first selection switch element is turned on responsive to a first signal to supply the pixel driving voltage to the first external power line during an image display period, and the second selection switch element is turned on responsive to the second signal and the current sensor measures a current flowing through the second external power line during a sensing period.

公开(公告)号：US20240203348A1

公开(公告)日：2024-06-20

申请号：US18491197

申请日：2023-10-20

Applicant: LG Display Co., Ltd.

Inventor： Hyun Soo Lee ,  Sung Ho Hong ,  Se Jin Shin

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2320/064 ,  G09G2330/021

Abstract: The present disclosure relates to a pixel circuit and a display device including the same. The pixel circuit includes: a first voltage node; a second voltage node; a driving element including a first electrode to which a pixel driving voltage is applied, a gate electrode connected to a first node, and a second electrode connected to a second node; a light emitting element including an anode electrode and a cathode electrode and configured to be driven by a current from the driving element, a capacitor connected between the first node and the second node; a first switch element connected between a data line to which a data voltage is applied and the first node and turned on in response to a first gate signal; and a second switch element connected between the second node and the second voltage node and turned on in response to a second gate signal.

公开(公告)号：US20240177674A1

公开(公告)日：2024-05-30

申请号：US18464047

申请日：2023-09-08

Applicant: LG Display Co., Ltd.

Inventor： Hyun Soo Lee ,  Seo-Jun Yeom

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2320/0295 ,  G09G2320/045

Abstract: A sensing circuit and a display device including the same are disclosed. The sensing circuit includes: a first external power line connected to a pixel power line applying a pixel driving voltage to pixels; a second external power line connected to the pixel power line; a first selection switch element connected between the first external power line and a voltage source; a current sensor connected to the second external power line; and a second selection switch element connected between the current sensor and the voltage source, wherein the first selection switch element is turned on responsive to a first signal to supply the pixel driving voltage to the first external power line during an image display period, and the second selection switch element is turned on responsive to the second signal and the current sensor measures a current flowing through the second external power line during a sensing period.

公开(公告)号：US12243495B2

公开(公告)日：2025-03-04

申请号：US18487542

申请日：2023-10-16

Applicant: LG Display Co., Ltd.

Inventor： Hyun Soo Lee ,  Sung Ho Hong ,  Seo Jun Yeom

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

Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit includes a driving element including a first electrode connected to a first power line, a gate electrode connected to a first node, and a second electrode connected to a second node, a first switch element connected between a data line through which a first or second data voltage is applied and the first node, and supplies the first data voltage to the first node responsive to a first gate signal, a second switch element connected between the data line and the second node and supplies the second data voltage to the second node responsive to a second gate signal, a light-emitting element including an anode connected to the second node and a cathode connected to a second power line, and a capacitor connected between the first and second nodes.

公开(公告)号：US11776476B2

公开(公告)日：2023-10-03

申请号：US17839174

申请日：2022-06-13

Applicant: LG Display Co., Ltd.

Inventor： Hyun Soo Lee ,  Yong Won Lee ,  Seo Jun Yeom

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

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/04 ,  G09G2330/021

Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit 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 third electrode connected to a third node; a light emitting element including an anode electrode connected to the third node, and a cathode electrode to which a pixel ground voltage supply voltage is applied; a first switch element configured to supply a data voltage to the second node in response to a scan pulse; and a second switch element configured to supply a first initialization voltage set to a negative voltage that is less than the pixel ground voltage supply voltage to the third node in response to a first initialization pulse.

公开(公告)号：US11663971B2

公开(公告)日：2023-05-30

申请号：US17855290

申请日：2022-06-30

Applicant: LG Display Co., Ltd.

Inventor： Yong Won Lee ,  Hyun Soo Lee

IPC: G09G3/3233 ,  H10K59/131

CPC classification number: G09G3/3233 ,  H10K59/131 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2330/02 ,  H10K59/88

Abstract: A pixel circuit and a display device including the pixel circuit are disclosed. The pixel circuit according to embodiments includes a first pixel circuit connected in parallel to an initialization voltage line to which an initialization voltage is applied, and including a first-first switch element connected to a first-first gate line and a first-second switch element connected to a first-second gate line; and a second pixel circuit connected in parallel to the initialization voltage line, and including a second-first switch element connected to a second-first gate line and a second-second switch element connected to a second-second gate line, and the first-second gate line and the second-first gate line are electrically connected.

公开(公告)号：US20230012381A1

公开(公告)日：2023-01-12

申请号：US17839174

申请日：2022-06-13

Applicant: LG Display Co., Ltd.

Inventor： Hyun Soo Lee ,  Yong Won Lee ,  Seo Jun Yeom

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

Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit 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 third electrode connected to a third node; a light emitting element including an anode electrode connected to the third node, and a cathode electrode to which a pixel ground voltage supply voltage is applied; a first switch element configured to supply a data voltage to the second node in response to a scan pulse; and a second switch element configured to supply a first initialization voltage set to a negative voltage that is less than the pixel ground voltage supply voltage to the third node in response to a first initialization pulse.

公开(公告)号：US11908405B2

公开(公告)日：2024-02-20

申请号：US17840072

申请日：2022-06-14

Applicant: LG Display Co., Ltd.

Inventor： Yong Won Lee ,  Hyun Soo Lee

IPC: G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0842

Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit of this 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, 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 of a scan pulse to supply a data voltage to the second node; and a second switch element configured to be turned off according to a gate-off voltage of a light emitting control pulse generated in antiphase of the scan pulse.

公开(公告)号：US20230009834A1

公开(公告)日：2023-01-12

申请号：US17855290

申请日：2022-06-30

Applicant: LG Display Co., Ltd.

Inventor： Yong Won Lee ,  Hyun Soo Lee

IPC: G09G3/3233 ,  H01L27/32

Abstract: A pixel circuit and a display device including the pixel circuit are disclosed. The pixel circuit according to embodiments includes a first pixel circuit connected in parallel to an initialization voltage line to which an initialization voltage is applied, and including a first-first switch element connected to a first-first gate line and a first-second switch element connected to a first-second gate line; and a second pixel circuit connected in parallel to the initialization voltage line, and including a second-first switch element connected to a second-first gate line and a second-second switch element connected to a second-second gate line, and the first-second gate line and the second-first gate line are electrically connected.

公开(公告)号：US20230008371A1

公开(公告)日：2023-01-12

申请号：US17840072

申请日：2022-06-14

Applicant: LG Display Co., Ltd.

Inventor： Yong Won Lee ,  Hyun Soo Lee

IPC: G09G3/3233 ,  G09G3/3291

Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit of this 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, 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 of a scan pulse to supply a data voltage to the second node; and a second switch element configured to be turned off according to a gate-off voltage of a light emitting control pulse generated in antiphase of the scan pulse.