公开(公告)号：US20220208078A1

公开(公告)日：2022-06-30

申请号：US17386420

申请日：2021-07-27

Applicant: LG Display Co., Ltd.

Inventor： Seokhwan Choi ,  Jung-Min Lee

IPC: G09G3/32

Abstract: A display apparatus according to embodiments of the present disclosure includes a display panel including at least one light emitting element that emits light according to a difference in respective voltages applied to an anode electrode and a cathode electrode, and including a plurality of pixels that are connected to a plurality of data lines, a plurality of gate lines, and a plurality of light emitting control lines, wherein a reset voltage is supplied to the anode electrode, a data driver for supplying data signals to the data lines, a gate driver for supplying gate signals to the gate lines, and supplying a light emitting control signal to each of the light emitting control lines, and a timing controller for controlling the data driver and the gate driver, and enabling the reset voltage to be supplied in sync with a plurality of non-light emitting periods of the light emitting control signal included in one frame.

公开(公告)号：US10964761B2

公开(公告)日：2021-03-30

申请号：US16165897

申请日：2018-10-19

Applicant: LG Display Co., Ltd.

Inventor： Taewon Lee ,  Jongchan Park ,  Hyunchul Um ,  Jung-Min Lee ,  Jiyun Kim

IPC: H01L29/08 ,  H01L27/32 ,  G09G3/3233 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device may include an active area including a first area having a special-form portion and a second area not having a special-form portion and a bezel area including a third area close to the first area and having a special-form portion and a fourth area close to the second area and not having a special-form portion. Furthermore, the display device may include a first power supply electrode positioned in the third area of the bezel area, a semiconductor pattern positioned in the third area of the bezel area and overlapping the first power supply electrode, and a plurality of dummy gate lines positioned between the semiconductor pattern and the first power supply electrode and overlapping the semiconductor pattern to form a first compensation capacitance and overlapping the first power supply electrode to form a second compensation capacitance.

公开(公告)号：US10236326B2

公开(公告)日：2019-03-19

申请号：US15369375

申请日：2016-12-05

Applicant: LG DISPLAY CO., LTD.

Inventor： Jung-Min Lee ,  JungChul Kim ,  WooChan Kim

IPC: H01L27/32 ,  H01L51/52 ,  G09G3/3208

Abstract: Provided is an organic light emitting display device including a plurality of sub pixels. Areas of emission regions of green sub pixels of the plurality of sub pixels are the same as or larger than an area of an emission region of at least one non-green sub pixel of the plurality of sub pixels. Also the organic light emitting display device includes an area of an emission region of a green sub pixel having a low luminance lifetime being the same as or larger than areas of emission regions of non-green sub pixels. Accordingly, it is possible to make the luminance lifetime of the green sub pixel and the luminance lifetimes of the non-green sub pixels uniform. Further, it is possible to minimize a color change of the organic light emitting display device.

公开(公告)号：US12062340B2

公开(公告)日：2024-08-13

申请号：US17990170

申请日：2022-11-18

Applicant: LG Display Co., Ltd.

Inventor： Jiyun Kim ,  Jung-Min Lee

IPC: G09G3/32 ,  G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2300/0842 ,  G09G2310/0272 ,  G09G2310/061

Abstract: According to an aspect of the present disclosure, a display device includes a substrate in which a plurality of sub pixels having different areas is defined; a plurality of light emitting elements each on a corresponding one of the plurality of sub pixels and includes an anode and a cathode; a first anode reset line which is connected to some of the plurality of sub pixels and outputs a first anode reset voltage to anodes of the some of the plurality of sub pixels; and a second anode reset line which is connected to remaining sub pixels of the plurality of sub pixels and outputs a second anode reset voltage to anodes of the remaining sub pixels. Accordingly, according to the present disclosure, different anode reset voltages are applied according to areas of the plurality of sub pixels so that the voltage deviation and the color variation of the anode according to the areas of the plurality of sub pixels may be reduced.

公开(公告)号：US20240221662A1

公开(公告)日：2024-07-04

申请号：US18537684

申请日：2023-12-12

Applicant: LG Display Co., Ltd.

Inventor： Jieun Kang ,  Jung-Min Lee

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0252 ,  G09G2330/021 ,  G09G2340/0435

Abstract: The display device includes a pixel circuit, wherein the pixel circuit includes: a light-emitting element configured to emit light based on a driving current; a driving transistor configured to control the driving current, and including a gate electrode, a source electrode, and a drain electrode, wherein a data voltage is applied to the source electrode; a storage capacitor connected to and disposed between the gate electrode of the driving transistor and a power voltage; and a reset transistor configured to apply an initialization voltage to an anode electrode of the light-emitting element in response to a scan signal, wherein when the display device operates in a Variable Refresh Rate mode for a refresh frame, an operating frequency of the scan signal varies for an anode reset frame of the refresh frame. Thus, response and image quality characteristics at a low gray level are simultaneously improved.

公开(公告)号：US09224335B2

公开(公告)日：2015-12-29

申请号：US14135022

申请日：2013-12-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Sang-Hun Yoon ,  Jung-Min Lee

IPC: G09G3/32

CPC classification number: G09G3/3241 ,  G09G3/3225 ,  G09G3/3233 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/045

Abstract: Discussed are an organic light emitting diode (OLED) display device and a method for driving the same. The OLED display device includes pixels each including a light emitting element, and a pixel driving circuit. The pixel driving circuit includes a driving switching element connected in series between high and low-level voltage supply lines, together with the light emitting element, a first switching element for connecting a data line and a first node connected to a gate of the driving switching element in response to a first scan signal, a second switching element for connecting an initialization voltage supply line and a second node connected to a source of the driving switching element in response to a second scan signal, and a third switching element for connecting the high-level voltage supply line and a drain of the driving switching element in response to an emission signal.

Abstract translation: 讨论了有机发光二极管（OLED）显示装置及其驱动方法。 OLED显示装置包括各自包括发光元件的像素和像素驱动电路。 像素驱动电路包括驱动开关元件，串联连接在高电平电源线和低电平电源线之间，连同发光元件，用于连接数据线的第一开关元件和连接到驱动开关的栅极的第一节点 响应于第一扫描信号的第二开关元件，用于连接初始化电压供给线和响应于第二扫描信号连接到驱动开关元件的源的第二节点的第二开关元件，以及用于连接高电平的第三开关元件 并且响应于发射信号而驱动开关元件的漏极。