公开(公告)号：US09947269B2

公开(公告)日：2018-04-17

申请号：US15164554

申请日：2016-05-25

Applicant: LG Display Co., Ltd.

Inventor： Sanghoon Jung ,  Jungchul Kim ,  Junyoung Kwon ,  Jungyoup Suk ,  Kiyoung Sung

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/20 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/2085 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0216 ,  G09G2310/0264 ,  G09G2320/045 ,  G09G2330/021 ,  G09G2330/028

Abstract: An organic light emitting display comprises a display panel having a plurality of pixels, a gate drive circuit that drives scan lines and emission lines on the display panel, and a data drive circuit that drives data lines on the display panel. Each of the pixels is arranged in an nth row. A single frame for the organic light emitting display comprises an initial period in which the gate voltage of a driving transistor is initialized, a sampling period for compensating the threshold voltage of the driving transistor, and a light emission period in which an organic light emitting diode emits light. A value corresponding to an image signal to be displayed by the organic light emitting diode is applied to a data line during the sampling period, and an initial voltage is applied to one electrode of a capacitor during the initial period.

公开(公告)号：US10692430B2

公开(公告)日：2020-06-23

申请号：US16109616

申请日：2018-08-22

Applicant: LG Display Co., Ltd.

Inventor： Jungchul Kim ,  Junyoung Kwon ,  Jungyoup Suk ,  Heeyoung An

IPC: G09G3/3233

Abstract: In pixels included in a display panel of an light emitting diode display, each pixel on an nth pixel row, where n is a natural number, includes a light emitting diode including an anode electrode connected to a node C and a cathode electrode connected to an input terminal of a low potential driving voltage, a driving TFT including a gate electrode connected to a node A, a drain electrode connected to a node B, and a source electrode connected to a node D, a first TFT connected between the node A and the node B, a second TFT connected to the node C, a third TFT connected between a data line and the node D, a fourth TFT connected between an input terminal of a high potential driving voltage and the node B, and a fifth TFT connected between the node D and the node C.

公开(公告)号：US10565929B2

公开(公告)日：2020-02-18

申请号：US16016438

申请日：2018-06-22

Applicant: LG Display Co., Ltd.

Inventor： Daekyu Kim ,  Jungchul Kim ,  Heekwang Kang ,  Junyoung Kwon

IPC: G09G3/32 ,  G09G3/3241 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

Abstract: An organic light emitting display comprises a display panel having a plurality of pixels, a gate drive circuit that drives scan lines and emission lines on the display panel, and a data drive circuit that drives data lines on the display panel, (n−1)th and nth pixels arranged in a row, a transistor array having a driving transistor, a sampling transistor, and a first initial transistor, and a capacitor connected between an initial voltage input terminal and the sampling transistor. A gate electrode of the first initial transistor for initializing the driving transistor of the nth pixel is connected to a scan line in the (n−1)th pixel.

公开(公告)号：US10535300B2

公开(公告)日：2020-01-14

申请号：US15188447

申请日：2016-06-21

Applicant: LG DISPLAY CO., LTD.

Inventor： Jungchul Kim ,  Junyoung Kwon

IPC: G09G3/3233

Abstract: Provided is an organic light emitting diode (OLED) display which includes a driving circuit and pixels arranged on pixel rows. In a (j−1)-th horizontal period, the driving circuit samples a threshold voltage of a driving Transistor (DT) of each pixel arranged on the (j−1)-th pixel row, and initializes a voltage of a gate electrode of a driving TFT of each pixel arranged on the j-th pixel row. In addition, in a j-th horizontal period, the driving circuit samples a threshold voltage of the driving TFT of each pixel arranged on the j-th pixel row.

公开(公告)号：US10930210B2

公开(公告)日：2021-02-23

申请号：US15472503

申请日：2017-03-29

Applicant: LG Display Co., Ltd.

Inventor： Hyunsuk Lee ,  Junyoung Kwon ,  Seungtae Jin

IPC: G09G3/3233

Abstract: An OLED display includes a plurality of pixel lines each connected to a plurality of pixels, the plurality of pixel lines including at least two adjacent pixel lines, each pixel including a driving TFT, a first switching TFT, a second switching TFT, and an emission control TFT connected to the driving TFT. The OLED display also includes a first scan driver controlling the first switching TFTs for the two pixel lines. The OLED display also includes a second scan driver controlling the second switching TFTs for the two pixel lines. The OLED display also includes a third scan driver configured so that all of the emission control TFTs for the two pixel lines are turned on in a programming period, maintain a turn-on state for a portion of an emission period, and can adjust an on-time duty of the emission period after the portion of time.

公开(公告)号：US10032413B2

公开(公告)日：2018-07-24

申请号：US15164704

申请日：2016-05-25

Applicant: LG Display Co., Ltd.

Inventor： Daekyu Kim ,  Jungchul Kim ,  Heekwang Kang ,  Junyoung Kwon

IPC: G09G3/3241 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3241 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2310/0262 ,  G09G2310/0278 ,  G09G2320/0238 ,  G09G2320/043

Abstract: An organic light emitting display comprises a display panel having a plurality of pixels, a gate drive circuit that drives scan lines and emission lines on the display panel, and a data drive circuit that drives data lines on the display panel, (n−1)th and nth pixels arranged in a row, a transistor array having a driving transistor, a sampling transistor, and a first initial transistor, and a capacitor connected between an initial voltage input terminal and the sampling transistor. A gate electrode of the first initial transistor for initializing the driving transistor of the nth pixel is connected to a scan line in the (n−1)th pixel.

公开(公告)号：US09805657B2

公开(公告)日：2017-10-31

申请号：US14745697

申请日：2015-06-22

Applicant: LG Display Co., Ltd.

Inventor： Junyoung Kwon ,  Jaeho Sim ,  Jungchul Kim ,  Euncheol Eom

IPC: G09G5/00 ,  G09G3/3266

CPC classification number: G09G3/3266 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2310/0286 ,  G09G2320/0247 ,  G09G2320/045 ,  G09G2330/026

Abstract: A circuit has a first portion configured to act as a shift register to provide an output signal via an output terminal, and a second portion configured to act as an inverter to invert the output signal at the output terminal of said first portion from a logic high state to a logic low state or vice versa. This is to forcibly turn off one or more transistors in a pixel circuit that provides subpixel or pixel-related control in an OLED display, such that an anode voltage of an organic light emitting diode does not exceed a turn-on voltage thereof.