公开(公告)号：US11081062B2

公开(公告)日：2021-08-03

申请号：US16573675

申请日：2019-09-17

Applicant: LG Display Co., Ltd.

Inventor： Hyuckjun Kim ,  Bumsik Kim ,  Seungtae Kim ,  Kyoungdon Woo ,  Myunggi Lim ,  Byungjae Lee ,  Minkyu Song

IPC: G09G3/3283 ,  G09G3/3233 ,  G09G3/3258 ,  G01R17/02 ,  H04N5/357

Abstract: The current sensing device in the present disclosure comprises a plurality of sensing units each of which is connected to a sensing channel. The sensing unit may comprise a reference current generator generating a reference current; a current comparator outputting a comparator output signal based on a pixel current input through the sensing channel and the reference current, and removing an offset deviation component included in the pixel current and the reference current by using a reset current externally applied; and an edge triggered data flip-flop outputting a digital sensing value corresponding to the pixel current based on the comparator output signal.

公开(公告)号：US20180151121A1

公开(公告)日：2018-05-31

申请号：US15816553

申请日：2017-11-17

Applicant: LG DISPLAY CO., LTD.

Inventor： Myunggi Lim ,  Kyoungdon Woo ,  Jaeyoon Bae

IPC: G09G3/3258

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/0247 ,  G09G2320/0295

Abstract: An organic light-emitting display includes a driving transistor that drives an organic light-emitting diode, a first transistor connected between a data line supplying a data voltage and a gate electrode of the driving transistor, a second transistor connected between a reference voltage input line and a source electrode of the driving transistor, and a third transistor that directly charges the gate electrode of the driving transistor with a reference voltage supplied from the reference voltage input line, in response to a black data control signal, wherein the third transistor directly receives the reference voltage by being turned on for a certain period of time after the gate electrode of the driving transistor is programmed with the data voltage in one frame before receiving a data voltage in the next frame.

公开(公告)号：US09905160B2

公开(公告)日：2018-02-27

申请号：US14851154

申请日：2015-09-11

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyoungdon Woo ,  Myunggi Lim

IPC: G09G3/3233 ,  G09G3/3225

CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

Abstract: An organic light emitting diode display is disclosed. The organic light emitting diode display includes a display panel including a plurality of pixels, a plurality of sensing units configured to integrate current information of the pixels through a plurality of sensing channels connected to sensing lines of the display panel and output a first sensing value, a reference sensing unit configured to integrate previously set reference current information and output a reference sensing value, a calculation block configured to calculate the first sensing value and the reference sensing value, remove a common noise component from the first sensing value, and output a second sensing value, and an analog-to-digital converter configured to convert the second sensing value into a digital sensing value.