公开(公告)号：US09396675B2

公开(公告)日：2016-07-19

申请号：US14584071

申请日：2014-12-29

Applicant: LG Display Co., Ltd.

Inventor： Changhee Kim ,  Kilhwan Oh ,  Hunki Shin

IPC: G09G3/00 ,  G09G3/32

CPC classification number: G09G3/006 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/0814 ,  G09G2300/0842 ,  G09G2310/0216 ,  G09G2310/027 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/12

Abstract: A method for sensing degradation of an organic light emitting display includes an initialization step for applying a sensing data voltage to a gate node of a driving TFT and applying an initialization voltage to a source node of the driving TFT, a boosting step for floating the gate node and the source node of the driving TFT and applying a drain-to-source current of the driving TFT to an organic element, a sensing step for again applying the initialization voltage to the source node of the driving TFT, setting a gate-to-source voltage of the driving TFT depending on a degradation degree of the organic element, and storing the drain-to-source current of the driving TFT determined by the set gate-to-source voltage in a line capacitor, and a sampling step for outputting a voltage stored in the line capacitor as a sensing voltage.

Abstract translation: 用于感测有机发光显示器的劣化的方法包括：初始化步骤，用于将感测数据电压施加到驱动TFT的栅极节点，并将初始化电压施加到驱动TFT的源极节点;升压步骤，用于浮置栅极 节点和驱动TFT的源节点，并将驱动TFT的漏极 - 源极电流施加到有机元件;感测步骤，用于再次将初始化电压施加到驱动TFT的源极节点，将栅极设置为 驱动TFT的源电压取决于有机元件的劣化程度，并将由设置的栅极 - 源极电压确定的驱动TFT的漏 - 源电流存储在线电容器中，以及采样步骤 输出存储在线路电容器中的电压作为感测电压。

公开(公告)号：US10541286B2

公开(公告)日：2020-01-21

申请号：US15697024

申请日：2017-09-06

Applicant: LG Display Co., Ltd.

Inventor： Hyemin Park ,  Hunki Shin ,  Dongik Kim ,  Jinwoo Lee

IPC: H01L27/32 ,  H01L29/423 ,  H01L51/10

Abstract: The present disclosure relates to an organic light emitting display device which comprises a plurality of sub-pixels each of which comprises an OLED, a driving TFT, a first TFT for applying a data voltage to a gate electrode of the driving TFT, a second TFT for applying a reference voltage to a source electrode of the driving TFT, and a storage capacitor, a data driver for outputting the data voltage to a data line and the reference voltage to a reference line, and a gate driving unit for outputting signals to a first gate line connected to the gate electrode of the first TFT and a second gate line connected to the gate electrode of the second TFT, wherein two adjacent sub-pixels emitting a same color is supplied with the data voltages through different data lines and share the first gate line and the second gate line.

公开(公告)号：US10460662B2

公开(公告)日：2019-10-29

申请号：US15802877

申请日：2017-11-03

Applicant: LG Display Co., Ltd.

Inventor： Eunji Song ,  Kiwon Son ,  Hunki Shin ,  Dongik Kim

IPC: G09G3/32 ,  G09G3/325 ,  G09G3/00 ,  G09G3/3258 ,  G09G3/3283 ,  G09G3/3291 ,  G09G3/3233 ,  G09G3/20

Abstract: An electroluminescent display and a method of sensing electrical characteristics of the electroluminescent display are disclosed. The electroluminescent display includes a display panel including a plurality of pixels, a plurality of gate lines, and a plurality of data lines and a driver integrated circuit connected to the data line through a channel terminal. The driver integrated circuit includes a data voltage generator configured to generate a data voltage to be supplied to the pixel, a first switch connected between the channel terminal and the data voltage generator, a sensor configured to sense electrical characteristics of the pixel, and a second switch connected between the channel terminal and the sensor.

公开(公告)号：US10366676B2

公开(公告)日：2019-07-30

申请号：US15786948

申请日：2017-10-18

Applicant: LG Display Co., Ltd.

Inventor： Dongik Kim ,  Joondong Kim ,  Hunki Shin

IPC: G09G5/10 ,  G09G3/3233

Abstract: A display device includes a plurality of pixels, and a pixel disposed in a n-th pixel line has a light emitting diode, a driving TFT to control a current flowing the light emitting diode, a capacitor connecting a source of the driving TFT and a gate of the driving TFT, a first TFT controlled by a first gate signal which is transferred through a first gate line to connect the gate of the driving TFT to one of data lines, a second TFT controlled by a second gate signal which is transferred through a second gate line to connect the gate of the driving TFT to an initialization voltage, and a third TFT controlled by the second gate signal transferred to a pixel disposed in a (n−1)-th pixel line to connect the source of the driving TFT to a reference voltage, n being a natural number.

公开(公告)号：US20180144717A1

公开(公告)日：2018-05-24

申请号：US15786948

申请日：2017-10-18

Applicant: LG Display Co., Ltd.

Inventor： Dongik Kim ,  Joondong Kim ,  Hunki Shin

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G3/3233 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0202

Abstract: A display device includes a plurality of pixels, and a pixel disposed in a n-th pixel line has a light emitting diode, a driving TFT to control a current flowing the light emitting diode, a capacitor connecting a source of the driving TFT and a gate of the driving TFT, a first TFT controlled by a first gate signal which is transferred through a first gate line to connect the gate of the driving TFT to one of data lines, a second TFT controlled by a second gate signal which is transferred through a second gate line to connect the gate of the driving TFT to an initialization voltage, and a third TFT controlled by the second gate signal transferred to a pixel disposed in a (n−1)-th pixel line to connect the source of the driving TFT to a reference voltage, n being a natural number.

公开(公告)号：US09449560B2

公开(公告)日：2016-09-20

申请号：US14584214

申请日：2014-12-29

Applicant: LG Display Co., Ltd.

Inventor： Hyemi Oh ,  Hunki Shin ,  Changhee Kim

IPC: G09G5/00 ,  G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/325 ,  G09G3/3283 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2300/0465 ,  G09G2300/0847 ,  G09G2310/027 ,  G09G2320/029 ,  G09G2320/045

Abstract: An organic light emitting display includes a display panel including a plurality of pixels, each of the plurality of pixels including an organic light emitting diode (OLED) and a driving thin film transistor (TFT) to control an emission amount of the OLED, the plurality of pixels connected to respective sensing lines; and at least one sensing unit connected to a corresponding one of the pixels through the respective sensing line, the at least one sensing unit configured to sense an amount of carriers accumulated in a parasitic capacitor of the OLED of the corresponding one of the pixels when a driving current flows in the OLED, the at least one sensing unit thereby sensing a degradation of the OLED.

Abstract translation: 有机发光显示器包括包括多个像素的显示面板，所述多个像素中的每一个包括有机发光二极管（OLED）和用于控制OLED的发射量的驱动薄膜晶体管（TFT），所述多个 的像素连接到相应的感测线; 以及至少一个感测单元，其通过相应的感测线连接到相应的一个像素，所述至少一个感测单元被配置为：当所述至少一个感测单元被配置成感测累积在所述像素中的相应一个像素的所述OLED的寄生电容器中的载流量 在OLED中驱动电流流动，所述至少一个感测单元从而感测OLED的劣化。