公开(公告)号：US20220351689A1

公开(公告)日：2022-11-03

申请号：US17734381

申请日：2022-05-02

Applicant: LG Display Co., Ltd.

Inventor： Hyuck Jun KIM ,  Tae Young LEE ,  Ji Su CHOI

IPC: G09G3/3275

Abstract: A light emitting display (LED) device can include a display panel configured to display an image; and a data driver including a panel driving circuit configured to drive the display panel and a panel sensing circuit configured to sense a condition of the display panel, in which the panel driving circuit includes a first data voltage output circuit to output a voltage to both of a first data line and a first reference line of the display panel to display black on a first sub-pixel included in the display panel.

公开(公告)号：US20240257750A1

公开(公告)日：2024-08-01

申请号：US18544636

申请日：2023-12-19

Applicant: LG Display Co., Ltd.

Inventor： Ji Su CHOI ,  Kyung Hyun LIM ,  Yu Hee KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/045

Abstract: An electroluminescent display apparatus includes a display panel, a sensing circuit performing a first sensing process on some pixels of the display panel to obtain a normal sensing value during a first sensing period and performing a second sensing process on all pixels of the display panel to obtain a temporary sensing value during a second sensing period, and a compensation circuit calculating a temporary sensing deviation value between adjacent pixels, based on the temporary sensing value, obtaining a compensation value for the some pixels, based on the normal sensing value, and obtaining a delta compensation value for the other pixels except the some pixels, based on the normal sensing value and the temporary sensing deviation value.

公开(公告)号：US20240221655A1

公开(公告)日：2024-07-04

申请号：US18517244

申请日：2023-11-22

Applicant: LG Display Co., Ltd.

Inventor： Jin Woo LEE ,  Kyung Hyun LIM ,  Ji Su CHOI

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2320/0223 ,  G09G2320/0693

Abstract: The present disclosure provides a display device including a first subpixel configured to emit light and a second subpixel; a high-potential voltage line connected to the first subpixel and the second subpixel to deliver a high-potential voltage; a low-potential voltage line connected to the first subpixel and the second subpixel configured to deliver a low-potential voltage; and a circuit connected to the low-potential voltage line and configured to sense a value corresponding to the low-potential voltage line during operation of the second subpixel and compensate for a data signal to be supplied to the first subpixel based on the value.

公开(公告)号：US20240169885A1

公开(公告)日：2024-05-23

申请号：US18230224

申请日：2023-08-04

Applicant: LG Display Co., Ltd.

Inventor： Tae Young LEE ,  Ji Su CHOI ,  A Rom SO

IPC: G09G3/20 ,  G09G3/3258

CPC classification number: G09G3/2096 ,  G09G3/3258 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/021

Abstract: A display device includes a display panel including pixels connected to a plurality of power input lines and receiving EVSS power, a first power line connected to one end of each of the power input lines to apply first EVSS power, a second power line connected to the other end of each of the power input lines to apply second EVSS power having the same electric potential as that of the first EVSS power, and a power supply configured to apply the first EVSS power through the first power line or to apply the second EVSS power through the second power line.

公开(公告)号：US20220383826A1

公开(公告)日：2022-12-01

申请号：US17825969

申请日：2022-05-26

Applicant: LG Display Co., Ltd.

Inventor： Ji Su CHOI ,  Myung Gi LIM ,  Kyung Hyun LIM

IPC: G09G3/3291

Abstract: An electroluminescence display apparatus includes a pixel including a driving element generating a driving current, a data line connected to the pixel to transfer a data voltage needed for generating the driving current, a reference voltage line connected to the pixel to transfer a first reference voltage and/or a second reference voltage needed for generating the driving current, and a driving & sensing circuit configured to perform an integral on the driving current input through the reference voltage line, output an integral result to the data line, decrease a voltage of the data line from the data voltage to an off voltage for turning off the driving element, and detect an off voltage of the driving element from the data line.

公开(公告)号：US20220199876A1

公开(公告)日：2022-06-23

申请号：US17548046

申请日：2021-12-10

Applicant: LG DISPLAY CO., LTD.

Inventor： Ji Su CHOI ,  Myung Gi LIM ,  Byung Jae LEE ,  Jung HEO

IPC: H01L33/62 ,  H01L27/15 ,  G09G3/32

Abstract: An electroluminescence display apparatus includes a pixel and a sensing circuit supplying a pixel reference voltage to the pixel through a reference voltage line during display driving and sensing a pixel current, flowing in the pixel, through the reference voltage line during sensing driving succeeding the display driving operation. The sensing circuit includes a sensing channel terminal connected to the reference voltage line, a first switch between the sensing channel terminal and an input terminal for the pixel reference voltage, an integrator amplifier including a first input terminal, a second input terminal, and an output terminal, an input terminal for an integrator reference voltage connected to the second input terminal, a second switch between the first input terminal and the output terminal, a first capacitor between the sensing channel terminal and the first input terminal, and a second capacitor between the sensing channel terminal and the output terminal.

公开(公告)号：US20220122525A1

公开(公告)日：2022-04-21

申请号：US17469649

申请日：2021-09-08

Applicant: LG Display Co., Ltd.

Inventor： Myung Gi LIM ,  Tae Young LEE ,  Ji Su CHOI

IPC: G09G3/32

Abstract: An electroluminescence display apparatus includes a display panel including a first pixel and a second pixel, a first current integrator connected to the first pixel through a first sensing channel to sense a first current from the first pixel to generate a first output voltage, a second current integrator connected to the second pixel through a second sensing channel to sense a second current from the second pixel to generate a second output voltage, and a sampling capacitor connected to an output terminal of the first current integrator at one electrode thereof and connected to an output terminal of the second current integrator at the other electrode thereof, thereby sampling the first output voltage and the second output voltage.