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公开(公告)号：US12237455B2
公开(公告)日：2025-02-25
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
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.
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公开(公告)号：US11568826B2
公开(公告)日：2023-01-31
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.
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Patent Agency Ranking
公开(公告)号：US11804179B2
公开(公告)日：2023-10-31
申请号：US17538477
申请日：2021-11-30
Applicant: LG Display Co., Ltd.
Inventor： Min Kim , Hyuck Jun Kim , Ji Su Choi , Tae Young Lee
IPC: G09G3/3233 , G09G3/3275
CPC classification number: G09G3/3233 , G09G3/3275 , G09G2300/0426 , G09G2300/0842 , G09G2310/08 , G09G2320/0233 , G09G2320/0295
Abstract: An electroluminescent display device according to an embodiment of the present disclosure includes a pixel including a driving element having a gate electrode connected to a data line and a source electrode connected to a readout line, a sensing circuit configured to sense a voltage of the readout line which changes according to a pixel current flowing through the driving element during sensing operation, and a boosting circuit connected between the data line and the readout line and configured to change a voltage of the data line according to the changed voltage in the readout line during the sensing operation.
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公开(公告)号：US11763755B2
公开(公告)日：2023-09-19
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 , G09G3/3233
CPC classification number: G09G3/3275 , G09G3/3233 , G09G2300/0809 , G09G2310/0291 , G09G2310/08 , G09G2320/0238 , G09G2330/021
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.
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公开(公告)号：US12272311B2
公开(公告)日：2025-04-08
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
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.
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公开(公告)号：US11580896B2
公开(公告)日：2023-02-14
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.
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公开(公告)号：US20220208095A1
公开(公告)日：2022-06-30
申请号：US17538477
申请日：2021-11-30
Applicant: LG Display Co., Ltd.
Inventor： Min Kim , Hyuck Jun Kim , Ji Su Choi , Tae Young Lee
IPC: G09G3/3233 , G09G3/3275
Abstract: An electroluminescent display device according to an embodiment of the present disclosure includes a pixel including a driving element having a gate electrode connected to a data line and a source electrode connected to a readout line, a sensing circuit configured to sense a voltage of the readout line which changes according to a pixel current flowing through the driving element during sensing operation, and a boosting circuit connected between the data line and the readout line and configured to change a voltage of the data line according to the changed voltage in the readout line during the sensing operation.
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