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。

公开(公告)号：US10964273B2

公开(公告)日：2021-03-30

申请号：US16593182

申请日：2019-10-04

Applicant: LG Display Co., Ltd.

Inventor： Hyemi Oh ,  Minkyu Song ,  Jisu Choi ,  Byungjae Lee ,  Myunggi Lim ,  Kyoungdon Woo ,  Seungtae Kim ,  Bumsik Kim

IPC: G09G3/3291

Abstract: A pixel sensing device, an organic light emitting display device and a pixel compensation method thereof are disclosed. The pixel sensing device comprises a plurality of current integrators for sensing driving characteristics of pixels. Each current integrator comprises: an operational amplifier equipped with an inverting input terminal to which a first input voltage is applied according to a pixel current of the pixels, a non-inverting input terminal to which a second input voltage is applied according to the pixel current, and an output terminal through which an integral voltage corresponding to the pixel current is output; and a feedback capacitor connected between the inverting input terminal and the output terminal. The operational amplifier comprises: a pre-amplifying unit for lowering an amplifier input gain and being equipped with the inverting and non-inverting input terminals; and two gain amplifying units for receiving an output of the pre-amplifying unit and for making an amplifier output gain higher than the amplifier input gain.

公开(公告)号：US10236335B2

公开(公告)日：2019-03-19

申请号：US15806049

申请日：2017-11-07

Applicant: LG Display Co., Ltd.

Inventor： Hyemi Oh ,  Bumsik Kim ,  Younsub Kim

IPC: H01L27/32

Abstract: The present disclosure is provided a display device. The display device includes subpixels and at least one scan line. The subpixels are formed on a first substrate, and each of the subpixels includes an emission area, in which a light emitting element for emitting light is disposed, and a circuit area in which a circuit for driving the light emitting element is disposed. The at least one scan line may be disposed on the circuit area in a horizontal direction. The at least one scan line may include: an upper scan line and a lower scan line spaced apart from each other; and a scan connection line positioned between the upper scan line and the lower scan line and electrically connecting the upper scan line and the lower scan line.

公开(公告)号：US12125439B2

公开(公告)日：2024-10-22

申请号：US17970422

申请日：2022-10-20

Applicant: LG Display Co., Ltd.

Inventor： Hyemi Oh ,  Sangwook Lee ,  Sojung Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2360/16

Abstract: A display device, a data driving circuit and a display driving method are discussed. The display device can include a display panel in which a plurality of subpixel circuits including a light emitting element, a driving transistor, and a sensing transistor are disposed. The display device further can include a gate driving circuit configured to supply a plurality of scan signals to the display panel through a plurality of gate lines, a data driving circuit configured to supply a plurality of data voltages to the display panel through a plurality of data lines and supply a constant current to the plurality of subpixel circuits during a resistance sensing period, and a timing controller configured to control the gate driving circuit and the data driving circuit, and supply compensation image data to the display panel by using the resistance of the sensing transistor detected in the resistance sensing period.