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：US20200105195A1

公开(公告)日：2020-04-02

申请号：US16583011

申请日：2019-09-25

Applicant: LG Display Co., Ltd.

Inventor： Eunji Song ,  Kimin Son

IPC: G09G3/3241 ,  G09G3/3291

Abstract: A current sensing device and an organic light emitting display device including the same are disclosed. The current sensing device includes a sensing unit selectively connected to a pixel and a reference current source through a sensing line. The sensing unit includes a plurality of resistors connected to a first node and setting a divided voltage according to a pixel current input from the pixel and a reference current input from the reference current source, a first MOS transistor connected between the first node and a second node, a second MOS transistor diode-connected to the second node, and a comparator having an inverting input terminal connected to a third node, a non-inverting input terminal connected to a fourth node, comparing a reference voltage charged at the third node when the reference current is input and a pixel voltage charged at the fourth node when the pixel current is input, and outputting a comparison result.

公开(公告)号：US10818234B2

公开(公告)日：2020-10-27

申请号：US16583011

申请日：2019-09-25

Applicant: LG Display Co., Ltd.

Inventor： Eunji Song ,  Kimin Son

IPC: G09G3/3241 ,  G09G3/3291

Abstract: A current sensing device and an organic light emitting display device including the same are disclosed. The current sensing device includes a sensing unit selectively connected to a pixel and a reference current source through a sensing line. The sensing unit includes a plurality of resistors connected to a first node and setting a divided voltage according to a pixel current input from the pixel and a reference current input from the reference current source, a first MOS transistor connected between the first node and a second node, a second MOS transistor diode-connected to the second node, and a comparator having an inverting input terminal connected to a third node, a non-inverting input terminal connected to a fourth node, comparing a reference voltage charged at the third node when the reference current is input and a pixel voltage charged at the fourth node when the pixel current is input, and outputting a comparison result.