公开(公告)号：US20180357964A1

公开(公告)日：2018-12-13

申请号：US16005358

申请日：2018-06-11

Applicant: LG Display Co., Ltd.

Inventor： Sungsoo SHIN ,  Sohee CHOI ,  Yewon Hong

IPC: G09G3/3258 ,  H01L27/32

CPC classification number: G09G3/3258 ,  G09G2300/0819 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/0219 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255 ,  H01L27/3262 ,  H01L27/3265 ,  H01L29/78675 ,  H01L29/7869

Abstract: An electroluminescent display including pixels arranged in a matrix is disclosed. Each pixel includes a pixel circuit configured to sample a threshold voltage of a driving element for driving a light emitting element and compensate for a data voltage. The pixel circuit includes a first switch element connected to a data voltage path supplied with the data voltage, a second switch element connected to a reference voltage path supplied with a predetermined reference voltage, a third switch element connected between a gate of the driving element and the first and second switch elements, a fourth switch element connected to an initialization voltage path supplied with a predetermined initialization voltage, and a fifth switch element connected to a power path supplied with a predetermined pixel driving voltage higher than the reference voltage and the initialization voltage.

公开(公告)号：US20180350286A1

公开(公告)日：2018-12-06

申请号：US15991045

申请日：2018-05-29

Applicant: LG Display Co., Ltd.

Inventor： Sohyung LEE ,  Namyong GONG ,  Sungsoo SHIN ,  Jungyul YANG ,  Heesung LEE

IPC: G09G3/14 ,  G09G3/3225

Abstract: An electroluminescence display is provided. The electroluminescence display comprises data lines and gate lines intersecting each other and pixels arranged in a matrix, wherein each of subpixels of each pixel comprises: a first driver configured to drive a light-emitting element by using a first EM switching element, which switches the current path between a power supply line to which a pixel driving voltage is applied and the light-emitting element in response to a first light-emission control signal, and a first driving element connected between the first EM switching element and the light-emitting element; and a second driver configured to drive the light-emitting element by using a second EM switching element, which switches the current path between the power supply line and the light-emitting element in response to a second light-emission control signal, and a second driving element connected between the second EM switching element and the light-emitting element.

公开(公告)号：US20180151099A1

公开(公告)日：2018-05-31

申请号：US15821359

申请日：2017-11-22

Applicant: LG Display Co., Ltd.

Inventor： Sohee CHOI ,  Namyong GONG ,  Sungsoo SHIN

IPC: G09G3/00 ,  G09G3/3233 ,  H01L27/12 ,  H01L29/786

CPC classification number: G09G3/006 ,  G09G3/3233 ,  G09G2300/0814 ,  G09G2310/08 ,  G09G2330/10 ,  H01L27/1222 ,  H01L27/1225 ,  H01L29/78672

Abstract: A display device is disclosed. The display device includes subpixels including data lines, scan lines, and one or more thin film transistors (TFTs). The display device includes a second switching TFT configured to output a reference signal input through a drain node to a source node according to a second scan signal input through a gate node, a first switching TFT configured to have a drain node connected to the source node of the second switching TFT, and form a current path such that the reference signal input through the drain node is transmitted to the data line according to a first scan signal input to a gate node, and an integrated circuit (IC) unit configured to sense a voltage of a current transmitted to the data line through the first switching TFT and sense a threshold voltage of the first switching TFT based on the sensed voltage.