公开(公告)号：US20180144689A1

公开(公告)日：2018-05-24

申请号：US15814174

申请日：2017-11-15

Applicant: LG Display Co., Ltd.

Inventor： Seokhyun HONG ,  Jaeyoon BAE ,  OSung DO ,  Taeyoung LEE

IPC: G09G3/3291 ,  G09G3/3233 ,  G09G3/3258

CPC classification number: G09G3/3291 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G3/3659 ,  G09G2300/043 ,  G09G2310/0294 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/0693

Abstract: The display device according to the present disclosure may comprise a display panel equipped with a plurality of pixels connected to data lines and sensing lines; a source drive IC configured to provide a data voltage to a pixel through the sensing line and equipped with a sensing block obtaining sensing data related to driving characteristics of the pixel using a signal input through the sensing line; a switch configured to control a connection via the sensing line between the pixel and the sensing block; and a power source configured to provide a test voltage or a test current to the sensing block, and the source drive IC may obtain calibration data for the sensing block by using the test voltage or the test current in a state that the switch disconnects the pixel and the sensing block.

公开(公告)号：US20180114815A1

公开(公告)日：2018-04-26

申请号：US15792285

申请日：2017-10-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Taeyoung LEE ,  Changwoo LEE ,  Osung DO

IPC: H01L27/32 ,  H01L51/50 ,  G09F9/30 ,  H05B33/22 ,  H05B33/28 ,  H05B33/02 ,  G06K9/00 ,  H01L51/52 ,  H01L51/56

CPC classification number: H01L27/32 ,  G06K9/00013 ,  G06K9/0004 ,  G09F9/30 ,  H01L27/3244 ,  H01L51/0031 ,  H01L51/50 ,  H01L51/5203 ,  H01L51/56 ,  H05B33/02 ,  H05B33/22 ,  H05B33/28

Abstract: An organic light emitting display device in an embodiment of the present invention comprises a display panel equipped with a plurality of pixels each including an OLED and a driving TFT for driving the OLED and a sensing circuit connected to pixels through a sensing line and detecting driving characteristics of a corresponding pixel. The sensing circuit may comprise a plural sensing units including an integrator for integrating currents respectively flowing two adjacent sensing lines connected to inverting and non-inverting input terminals of a fully differential amplifier, a sampling unit for respectively sampling two integral outputs of the integrator and a scaler for regulating an operating range of outputs of the sampling unit, a differential amplifier for differentially amplifying one or more outputs of the scaler, and an ADC for converting an output of the differential amplifier into a digital sensing value.