公开(公告)号：US12073759B2

公开(公告)日：2024-08-27

申请号：US17963352

申请日：2022-10-11

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  SinKyun Park

IPC: G09G3/20 ,  G09G3/32 ,  G09G3/3225 ,  G09G3/3291 ,  H10K59/12

CPC classification number: G09G3/2074 ,  G09G3/3225 ,  G09G3/32 ,  G09G3/3291 ,  G09G2300/0413 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/02 ,  G09G2320/0238 ,  G09G2320/0247 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2330/028 ,  G09G2340/0435

Abstract: A display device includes a sub-pixel comprising a light emitting device and a driving transistor DRT electrically connected to a first electrode of the light emitting device and configured to drive the light emitting device, and a reference voltage line electrically connected to the sub-pixel SP and applying an initialization voltage to the first electrode of the light emitting device, wherein a voltage level of the initialization voltage is changed according to a length of a blank period, thereby improving display quality of the image at a low refresh rate in a variable refresh rate mode.

公开(公告)号：US11996052B2

公开(公告)日：2024-05-28

申请号：US17976548

申请日：2022-10-28

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong ,  Uitaek Jeong ,  HyeonWoo Lee ,  DongKyu Yang ,  SinKyun Park ,  SeungWon Lee

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

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G3/3283 ,  G09G2300/0413 ,  G09G2300/0842 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/045 ,  G09G2330/021

Abstract: A display device can include a display panel having a plurality of subpixels; a gate driving circuit configured to supply a plurality of scan signals to the display panel through a plurality of gate lines, and output a feedback voltage; a data driving circuit configured to supply a plurality of data voltages to the display panel through a plurality of data lines; a power management circuit configured to supply a plurality of driving voltages to the gate driving circuit and the data driving circuit, and supply a compensating high-potential gate voltage to the gate driving circuit based on the feedback voltage transferred from the gate driving circuit. The display device can further include a timing controller configured to control the gate driving circuit, the data driving circuit, and the power management circuit.

公开(公告)号：US11967260B2

公开(公告)日：2024-04-23

申请号：US17980195

申请日：2022-11-03

Applicant: LG Display Co., Ltd.

Inventor： Jinwon Kim ,  MooKyoung Hong

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/3283 ,  G09G3/32

CPC classification number: G09G3/035 ,  G09G3/2074 ,  G09G3/3233 ,  G09G3/3283 ,  G09G3/32 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/021

Abstract: A display device is disclosed that includes a display panel on which one or more sub-pixels including a light emitting device and a driving transistor for driving the light emitting device are disposed in a display area, and whose shape is changed during a transforming period, a timing controller for receiving image data and a command signal defining the transforming period, and converting the image data to output converted image data, and a data driving circuit for receiving the converted image data and outputting a data voltage, wherein, in the transforming period, at least one sub-pixel emits light based on the image data input to the timing controller, and emits light with a luminance lower than a luminance corresponding to a grayscale of the image data. Accordingly, there may be provided a display device capable of changing a shape during an image display period.

公开(公告)号：US11842694B2

公开(公告)日：2023-12-12

申请号：US17977828

申请日：2022-10-31

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3275 ,  G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/029 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A display device is disclosed that includes: a display panel on which a plurality of pixels are disposed; a data driver configured to receive a sensing voltage from a reference voltage line connected to the plurality of pixels, convert the reference voltage into sensing data, and supply the data voltage to the plurality of pixels; a gate driver configured to supply a scan signal to the plurality of pixels; and a timing controller configured to output a data control signal for controlling an output timing of the data voltage and output a gate control signal for controlling an output timing of the scan signal, wherein one of the output timing of the data voltage and the output timing of the scan signal is adjusted based on the sensing data.

公开(公告)号：US11749205B2

公开(公告)日：2023-09-05

申请号：US17549552

申请日：2021-12-13

Applicant: LG Display Co., Ltd.

Inventor： HaeSeung Lee ,  MooKyoung Hong

IPC: G09G3/3266

CPC classification number: G09G3/3266 ,  G09G2310/027 ,  G09G2310/0291

Abstract: A display device is provided that includes a display panel including one or more sub-pixels and a gate driving circuit supplying a gate signal to the sub-pixels through gate lines, the gate driving circuit including a gate output buffer circuit including a pull-up transistor that controls a connection between a clock input node and a gate output node, and a pull-down transistor that controls a connection between a low level voltage node and the gate output node, a control circuit capable of controlling the gate output buffer circuit, and a dummy pull-down transistor whose a gate node is shared with a gate node of the pull-down transistor.

公开(公告)号：US20230215387A1

公开(公告)日：2023-07-06

申请号：US17974414

申请日：2022-10-26

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2310/08 ,  G09G2310/0294 ,  G09G2310/0278 ,  G09G2320/0626

Abstract: A display device includes: a display panel on which a plurality of pixels are disposed; a timing controller configured to receive Nth frame data and (N+1)th frame data and output a luminance control signal; and a power supply configured to output a reference voltage from a plurality of reference voltages each having a different level in response to the luminance control signal, in which output luminance of the plurality of pixels is determined according to the level of the reference voltage thereby maximizing an HDR effect.

公开(公告)号：US20230213974A1

公开(公告)日：2023-07-06

申请号：US17976122

申请日：2022-10-28

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  SinKyun Park

IPC: G06F1/16 ,  G09G3/3291

CPC classification number: G06F1/1652 ,  G06F1/1677 ,  G09G3/3291 ,  G09G2300/0828

Abstract: A display device can include a display panel including a display area in which sub-pixels are disposed, and a non-display area adjacent to the display area and in which a second pad portion is disposed, a printed circuit board including a first pad portion for outputting voltages to the display panel, and a circuit film including a first end connected to the first pad portion of the printed circuit board and a second end connected to the second pad portion of the display panel. The display device can further include an analog-to-digital converter to receive a voltage output from the first pad portion or the second pad portion through a line in the circuit film electrically connecting the first pad portion with the second pad portion, and output a value corresponding to the voltage input for detecting a bonding state of at least one internal component within the display device.

公开(公告)号：US11594186B2

公开(公告)日：2023-02-28

申请号：US17525147

申请日：2021-11-12

Applicant: LG Display Co., Ltd.

Inventor： Jinhee Jung ,  MooKyoung Hong

IPC: G09G3/30 ,  G09G3/36 ,  G09G3/3275

Abstract: A display device and a driving circuit are discussed. According to an embodiment of the present disclosure, it is possible to stably maintain the output signal of the driving circuit when the lock signal indicating the synchronization state of the clock signal is changed due to an operation error such as overcurrent in a display device using a point-to-point interface. In addition, according to an embodiment of the present disclosure, it is possible to prevent damage to the display panel due to an overload generated in the output signal of the driving circuit by an operation error. In addition, according to an embodiment of the present disclosure, it is possible to prevent overload of the driving circuit and damage to the display panel by controlling the operation of the driving circuit through a differential input voltage between the timing controller and the driving circuit.

公开(公告)号：US11430395B2

公开(公告)日：2022-08-30

申请号：US17463986

申请日：2021-09-01

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3291

Abstract: A display device and a driving circuit are discussed. According to an embodiment of the present disclosure, it is possible to reduce a compensation offset for a driving characteristic value of a display panel. In addition, according to an embodiment of the present disclosure, the number of times of detecting a dummy sensing voltage through a dummy channel is greater than the number of times of detecting a sensing voltage through a sensing channel, thereby reducing the compensation offset. Further, according to an embodiment of the present disclosure, offset noise can be reduced by accumulating a dummy sensing voltage repeatedly detected through the dummy channel.

公开(公告)号：US20220148515A1

公开(公告)日：2022-05-12

申请号：US17518445

申请日：2021-11-03

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3275

Abstract: Embodiments of the present disclosure relate to a display device, a driving circuit and a driving method. According to an embodiment of the present disclosure, it is possible to actively control the output characteristics of data packets in a display device using a point-to-point interface. In addition, according to embodiments of the present disclosure, it is possible to actively control the output characteristics of data packets by determining a connection status or signal transmission characteristics between a timing controller and the driving circuit in a display device using a point-to-point interface.