公开(公告)号：US10515604B2

公开(公告)日：2019-12-24

申请号：US15710583

申请日：2017-09-20

Applicant: LG DISPLAY CO., LTD.

Inventor： Moonsoo Chung ,  Yousung Nam

IPC: G09G3/36 ,  G06F3/038

Abstract: A liquid-crystal display device and a driving method thereof are disclosed. The driving method of the liquid-crystal display device comprises: generating first and second power supply voltages; generating gamma-compensated voltages based on the first and second power supply voltages; converting data of an input image to the gamma-compensated voltages to output data voltages; distributing, by a multiplexer, the data voltages output from the data driver to a plurality of data lines; and varying at least one of the first and second power supply voltages at a given time interval.

公开(公告)号：US10156747B2

公开(公告)日：2018-12-18

申请号：US14808825

申请日：2015-07-24

Applicant: LG Display Co., Ltd.

Inventor： Yousung Nam ,  Changseung Woo ,  Soonhwan Hong

IPC: G02F1/1333 ,  G02F1/1337 ,  H01L29/786 ,  H01L27/12 ,  G02F1/1343 ,  H01L29/66 ,  G02F1/1368

Abstract: A display device optimized to operate in a low frame rate mode under certain predetermined conditions is provided. To reduce pixel discharge during the low frame rate mode, the display device employees the TFTs with metal oxide semiconductor layer, the optical alignment layer with an upper portion and a lower portion having different resistivity. In addition, a passivation layer is provided between the optical alignment layer and the pixel or the common electrode for compensating the low resistivity of the lower portion of the optical alignment layer. As such, various visual defects associated with the pixel discharge can be reduced even when the display device is operating under the low frame rate mode.

公开(公告)号：US11468851B2

公开(公告)日：2022-10-11

申请号：US17125099

申请日：2020-12-17

Applicant: LG Display Co., Ltd.

Inventor： Yousung Nam ,  Youngchul Kwon

IPC: G09G3/3291 ,  G09G3/3275 ,  G09G3/3225 ,  G09G3/3266

Abstract: Disclosed is an organic light-emitting diode display device including: a display panel in which pixels adjacent to each other are paired and arranged to share a single data line in pixel areas defined by gate and data lines; a gate driver configured to drive the plurality of gate lines; a data driver configured to output a data voltage to data voltage output channels on the basis of an arrangement of pixels; a data switcher configured to alternately select a data line and to electrically connect the data line with the data voltage output channel of the data driver; and a timing controller configured to control the data switcher and the gate and data drivers, thereby making it possible to drive a data driving circuit at high driving frequency and to reduce a deterioration of image quality and image distortion even in a simplified structure of the data driving circuit.

公开(公告)号：US10727255B2

公开(公告)日：2020-07-28

申请号：US16189688

申请日：2018-11-13

Applicant: LG Display Co., Ltd.

Inventor： Yousung Nam ,  Changseung Woo ,  Soonhwan Hong

IPC: H01L27/12 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/1368 ,  H01L29/66 ,  H01L29/786

Abstract: A display device optimized to operate in a low frame rate mode under certain predetermined conditions is provided. To reduce pixel discharge during the low frame rate mode, the display device employees the TFTs with metal oxide semiconductor layer, the optical alignment layer with an upper portion and a lower portion having different resistivity. In addition, a passivation layer is provided between the optical alignment layer and the pixel or the common electrode for compensating the low resistivity of the lower portion of the optical alignment layer. As such, various visual defects associated with the pixel discharge can be reduced even when the display device is operating under the low frame rate mode.