公开(公告)号：US10147348B2

公开(公告)日：2018-12-04

申请号：US15391460

申请日：2016-12-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Tae Woo Kim ,  Sangyong Kim

IPC: G09G3/20 ,  G09G3/3291 ,  G09G3/3266 ,  G09G3/3233

Abstract: A voltage conversion circuit includes a reference voltage setting unit configured to generate a positive voltage and a negative voltage to be supplied to a display panel, an amplifier, and first and second switching units disposed between the output terminal of the amplifier and the ground. Accordingly, it is possible to selectively output different base voltages. An organic light-emitting display device includes a display panel, a data driver, a gate driver, a voltage supply unit, and a voltage conversion unit configured to selectively supply different base voltages. Accordingly, it is possible to selectively output a base voltage to be supplied to a cathode of an organic light-emitting diode of each sub pixel.

公开(公告)号：US12100326B2

公开(公告)日：2024-09-24

申请号：US17491040

申请日：2021-09-30

Applicant: LG Display Co., Ltd.

Inventor： Sangyong Kim ,  Sangjae Lee ,  Chanhui Seol

IPC: G09G3/00 ,  G09G3/3233 ,  H05K5/02

CPC classification number: G09G3/035 ,  G09G3/3233 ,  H05K5/0217 ,  G09G2300/0439 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/029 ,  G09G2320/043

Abstract: Discussed are a flexible display device, a rollable display apparatus including the flexible display device, and a method for controlling the flexible display device. According to embodiments, a sensing operation is performed based on whether a display panel included in the flexible display device moves and based on an exposed area of the display panel. Accordingly, an inaccurate sensed value due to a physical change of the display panel are not considered, such that accurate sensing and deterioration compensation for deterioration of the display panel can be achieved. Further, an image quality of each of the flexible display device, and the rollable display apparatus including the flexible display device can be improved.

公开(公告)号：US10424253B2

公开(公告)日：2019-09-24

申请号：US15682367

申请日：2017-08-21

Applicant: LG DISPLAY CO., LTD.

Inventor： Sangyong Kim ,  Moo Kyoung Hong

IPC: G09G3/3275 ,  G09G3/36 ,  G09G3/3225

Abstract: A display device and a power monitoring circuit. The power monitoring circuit monitors whether or not first power is ordinarily output from a power management integrated circuit (PMIC). When the first power is not ordinarily output, the power monitoring circuit outputs an error detection signal indicative of an abnormality in the PMIC to a main controller. The display device includes the power monitoring circuit. The operating state of the PMIC supplying power required for the driving of a display panel can be monitored.