公开(公告)号：US20210134215A1

公开(公告)日：2021-05-06

申请号：US17071725

申请日：2020-10-15

Applicant: LG Display Co., Ltd.

Inventor： KwangIl CHUN

IPC: G09G3/32

Abstract: A light-emitting display device and a method of driving the same including scan signals having a turn-on level voltage concurrently supplied to N scan lines of a plurality of scan lines during a first supply period in which the scan signals having a turn-on level voltage are supplied first, for each of the N scan lines corresponding to N subpixel lines included in each of M blocks into which subpixels are grouped, the scan signals having a turn-on level voltage may be supplied to the N scan lines during a second supply period for each of the N scan lines, in which the scan signals having a turn-on level voltage are supplied second, and time intervals of the N scan lines between the first supply period and the second supply period may be the same or have a difference within a preset range, thereby not only securing sensing and compensating times during driving of an image display through block driving, but also preventing luminance non-uniformity during the block driving.

公开(公告)号：US20190180675A1

公开(公告)日：2019-06-13

申请号：US16210587

申请日：2018-12-05

Applicant: LG Display Co., Ltd.

Inventor： YongHo JANG ,  KwangIl CHUN

IPC: G09G3/32

Abstract: A light emitting display apparatus includes a light emitting display panel including a plurality of pixels each operating in order of an initialization period, a sampling period, an offset voltage formation period, a data writing period, and a light emission period; a data driving circuit configured to supply data voltage to each of the pixels; a gate driving circuit configured to provide, to each of the pixels, a control signal having voltage levels determined for the initialization period, the sampling period, the offset voltage formation period, the data writing period, and the light emission period of a corresponding pixel; and a timing controller configured to control the data driving circuit and the gate driving circuit, wherein the offset voltage formation period is longer than the sampling period.

公开(公告)号：US20200184886A1

公开(公告)日：2020-06-11

申请号：US16703753

申请日：2019-12-04

Applicant: LG Display Co., Ltd.

Inventor： KwangIl CHUN

IPC: G09G3/3225 ,  G09G3/3291

Abstract: The present disclosure relates to a pixel circuit and an organic light emitting display device that include an organic light emitting diode, a first transistor receiving a pixel power source in response to a data signal and supplying a driving current to the organic light emitting diode, and a capacitor holding the data signal supplied to the first transistor, and to a method of driving the pixel circuit and the organic light emitting display device. In the capacitor, after a first voltage corresponding to a threshold voltage of the first transistor is stored, a second voltage resulting from compensating the first voltage relative to mobility of the first transistor is stored, and a value obtained by adding a third voltage corresponding to the data signal to the second voltage in response to the data signal is stored.

公开(公告)号：US20190130842A1

公开(公告)日：2019-05-02

申请号：US16176142

申请日：2018-10-31

Applicant: LG DISPLAY CO., LTD.

Inventor： YongHo JANG ,  WooSeok CHOI ,  KwangIl CHUN

IPC: G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2300/0814 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/0286 ,  G09G2310/06 ,  G09G2310/08

Abstract: According to an aspect of the present disclosure, a gate driver includes a plurality of stages which is dependently connected to each other and each of the plurality of pixels includes: a first output unit which outputs a sensing signal by voltages of a Q node and a QB node; a second output unit which outputs a reference signal by the voltages of the Q node and the QB node; a third output unit which outputs a scan signal by the voltages of the Q node and the QB node; a first controller which controls the Q node; and a second controller which controls the QB node, and at least two of the first to third output units share at least one clock signal among a plurality of clock signals, thereby reducing an area of the gate driver.

公开(公告)号：US20210225271A1

公开(公告)日：2021-07-22

申请号：US17224901

申请日：2021-04-07

Applicant: LG Display Co., Ltd.

Inventor： YongHo JANG ,  KwangIl CHUN

IPC: G09G3/32 ,  G09G3/3233

Abstract: A light emitting display apparatus includes a light emitting display panel including a plurality of pixels each operating in order of an initialization period, a sampling period, an offset voltage formation period, a data writing period, and a light emission period; a data driving circuit configured to supply data voltage to each of the pixels; a gate driving circuit configured to provide, to each of the pixels, a control signal having voltage levels determined for the initialization period, the sampling period, the offset voltage formation period, the data writing period, and the light emission period of a corresponding pixel; and a timing controller configured to control the data driving circuit and the gate driving circuit, wherein the offset voltage formation period is longer than the sampling period.

公开(公告)号：US20200184896A1

公开(公告)日：2020-06-11

申请号：US16690815

申请日：2019-11-21

Applicant: LG Display Co., Ltd.

Inventor： Dohyung LEE ,  ChanYong JEONG ,  JuHeyuck BAECK ,  KwangIl CHUN

IPC: G09G3/3266 ,  H01L27/12 ,  G09G3/3241

Abstract: A display device and a signal inversion device are provided. A display device includes: a display panel including: sub-pixels, and scan lines respectively connected to each of the sub-pixels, and light emission control lines respectively connected to each of the sub-pixels, a scan driver circuit for outputting respective scan signals to the scan lines, and a light emission control driver circuit for outputting respective light emission control signals to the light emission control lines, the light emission control driver circuit including: a resistance device electrically connected between: a first voltage node for receiving a first voltage, and an output node electrically connected to the light emission control lines, and a transistor electrically connected between the output node and a second voltage node for receiving a second voltage that is different from the first voltage, wherein an on/off operation of the transistor is controlled according to an input signal.

公开(公告)号：US20180190199A1

公开(公告)日：2018-07-05

申请号：US15858276

申请日：2017-12-29

Applicant: LG Display Co., Ltd.

Inventor： KwangIl CHUN

IPC: G09G3/3258 ,  H01L27/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0264 ,  G09G2320/043 ,  H01L27/3276

Abstract: Disclosed are an organic light emitting display panel and an organic light emitting display device including the same, which decrease a level of a storage capacitance in a sampling period in which a threshold voltage of a driving transistor is sensed, and increase a level of the storage capacitance in an emission period for image display.