公开(公告)号：US11568826B2

公开(公告)日：2023-01-31

申请号：US17825969

申请日：2022-05-26

Applicant: LG Display Co., Ltd.

Inventor： Ji Su Choi ,  Myung Gi Lim ,  Kyung Hyun Lim

IPC: G09G3/3291

Abstract: An electroluminescence display apparatus includes a pixel including a driving element generating a driving current, a data line connected to the pixel to transfer a data voltage needed for generating the driving current, a reference voltage line connected to the pixel to transfer a first reference voltage and/or a second reference voltage needed for generating the driving current, and a driving & sensing circuit configured to perform an integral on the driving current input through the reference voltage line, output an integral result to the data line, decrease a voltage of the data line from the data voltage to an off voltage for turning off the driving element, and detect an off voltage of the driving element from the data line.

公开(公告)号：US11580896B2

公开(公告)日：2023-02-14

申请号：US17469649

申请日：2021-09-08

Applicant: LG Display Co., Ltd.

Inventor： Myung Gi Lim ,  Tae Young Lee ,  Ji Su Choi

IPC: G09G3/32

Abstract: An electroluminescence display apparatus includes a display panel including a first pixel and a second pixel, a first current integrator connected to the first pixel through a first sensing channel to sense a first current from the first pixel to generate a first output voltage, a second current integrator connected to the second pixel through a second sensing channel to sense a second current from the second pixel to generate a second output voltage, and a sampling capacitor connected to an output terminal of the first current integrator at one electrode thereof and connected to an output terminal of the second current integrator at the other electrode thereof, thereby sampling the first output voltage and the second output voltage.

公开(公告)号：US10013935B2

公开(公告)日：2018-07-03

申请号：US14971387

申请日：2015-12-16

Applicant: LG DISPLAY CO., LTD.

Inventor： Seok Hyun Hong ,  Myung Gi Lim ,  O Sung Do

IPC: G09G3/36 ,  G09G3/20

CPC classification number: G09G3/3611 ,  G09G3/20 ,  G09G2300/0426 ,  G09G2310/0224 ,  G09G2310/0286 ,  G09G2310/08

Abstract: A display device according to an embodiment includes a display panel in which a plurality of gate and date lines are formed, and a gate driver configured to include first and second shift registers and a control portion. The first shift register is disposed opposite to odd-numbered gate lines of the display panel. The second shift register is disposed opposite to even-numbered gate lines of the display panel. The control portion transfers a first control signal to the first shift register, derives a second control signal from the first control signal, and applies the second control signal to the second shift register.

公开(公告)号：US09953568B2

公开(公告)日：2018-04-24

申请号：US14710327

申请日：2015-05-12

Applicant: LG Display Co., Ltd.

Inventor： Sang Ho Yu ,  Tae Gung Kim ,  Jong Min Lee ,  Myung Gi Lim ,  Hye Mi Oh ,  Hun Ki Shin ,  Jin han Yoon

IPC: G09G3/3233 ,  G09G3/3241 ,  H01L27/32

CPC classification number: G09G3/3233 ,  G09G3/3241 ,  G09G2300/0852 ,  G09G2320/0233 ,  G09G2320/045 ,  H01L27/32

Abstract: An organic light emitting diode display device is disclosed which includes: a scan switch controlled by a scan pulse on a gate line and connected between a data line and a first node; a driving switch which includes a gate electrode connected to the first node, a source electrode connected to a second node, and a drain electrode connected to a first driving voltage line; a sensing switch controlled by a sensing control signal and connected between the second node and a third node on a sensing line; and an organic light emitting diode connected between the second node and a second driving voltage line.

公开(公告)号：US11817059B2

公开(公告)日：2023-11-14

申请号：US17954290

申请日：2022-09-27

Applicant: LG Display Co., Ltd.

Inventor： Kyung Hyun Lim ,  Myung Gi Lim ,  Sang Goo Jeong

IPC: G09G3/3291 ,  G09G3/3233

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/043 ,  G09G2330/021 ,  G09G2330/026 ,  G09G2330/027 ,  G09G2330/08 ,  G09G2360/10

Abstract: The present disclosure relates to an electroluminescent display device and a method for sensing electrical characteristics thereof, and the electroluminescent display device includes a display panel including a plurality of pixels including a sensing pixel and a non-sensing pixel connected to each data line, the plurality of pixels sharing one sensing line, a sensing circuit configured to sense an electrical characteristic value of the sensing pixel based on a sensing voltage applied to the shared sensing line, and a feedback unit configured to apply a feedback voltage according to the sensing voltage applied to the shared sensing line to the data line of the non-sensing pixel.

公开(公告)号：US09601058B2

公开(公告)日：2017-03-21

申请号：US15169082

申请日：2016-05-31

Applicant: LG DISPLAY CO., LTD.

Inventor： Byung Jae Lee ,  Jun Hyeok Yang ,  Tae Gung Kim ,  Myung Gi Lim

IPC: G09G3/3291 ,  G09G3/32 ,  G09G3/20

CPC classification number: G09G3/3291 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2360/16

Abstract: An OLED display device is disclosed which includes: a display panel configured with pixels which each include an organic light emitting diode and a driving transistor applying a driving current to the organic light emitting diode; a gate driver connected to the pixels through gate lines; a data driver configured to apply a sensing voltage to the pixels through data lines in a sensing mode and enable a sensing current to flow through each of the driving transistors; a sensing driver configured to sense threshold voltages opposite the driving currents which flow through the driving transistors; and a brightness compensation circuit configured to derive negatively shifted degrees of threshold voltages of the driving transistors from the sensed threshold voltages, detect a bright-defected pixel on the basis of the negatively shifted degrees, and generate a compensation gray value for the bright-defected pixel.

公开(公告)号：US12237455B2

公开(公告)日：2025-02-25

申请号：US17548046

申请日：2021-12-10

Applicant: LG DISPLAY CO., LTD.

Inventor： Ji Su Choi ,  Myung Gi Lim ,  Byung Jae Lee ,  Jung Heo

IPC: G09G3/32 ,  H01L27/15 ,  H01L33/62

Abstract: An electroluminescence display apparatus includes a pixel and a sensing circuit supplying a pixel reference voltage to the pixel through a reference voltage line during display driving and sensing a pixel current, flowing in the pixel, through the reference voltage line during sensing driving succeeding the display driving operation. The sensing circuit includes a sensing channel terminal connected to the reference voltage line, a first switch between the sensing channel terminal and an input terminal for the pixel reference voltage, an integrator amplifier including a first input terminal, a second input terminal, and an output terminal, an input terminal for an integrator reference voltage connected to the second input terminal, a second switch between the first input terminal and the output terminal, a first capacitor between the sensing channel terminal and the first input terminal, and a second capacitor between the sensing channel terminal and the output terminal.

公开(公告)号：US09378678B1

公开(公告)日：2016-06-28

申请号：US14945866

申请日：2015-11-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Byung Jae Lee ,  Jun Hyeok Yang ,  Tae Gung Kim ,  Myung Gi Lim

IPC: G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2360/16

Abstract: An OLED display device is disclosed which includes: a display panel configured with pixels which each include an organic light emitting diode and a driving transistor applying a driving current to the organic light emitting diode; a gate driver connected to the pixels through gate lines; a data driver configured to apply a sensing voltage to the pixels through data lines in a sensing mode and enable a sensing current to flow through each of the driving transistors; a sensing driver configured to sense threshold voltages opposite the driving currents which flow through the driving transistors; and a brightness compensation circuit configured to derive negatively shifted degrees of threshold voltages of the driving transistors from the sensed threshold voltages, detect a bright-defected pixel on the basis of the negatively shifted degrees, and generate a compensation gray value for the bright-defected pixel.

Abstract translation: 公开了一种OLED显示装置，其包括：配置有各自包括有机发光二极管的像素的显示面板和向该有机发光二极管施加驱动电流的驱动晶体管; 栅极驱动器，通过栅极线连接到像素; 数据驱动器，被配置为以感测模式通过数据线将感测电压施加到像素，并使感测电流能够流过每个驱动晶体管; 感测驱动器，被配置为感测与流过所述驱动晶体管的驱动电流相反的阈值电压; 以及亮度补偿电路，被配置为从感测的阈值电压导出驱动晶体管的阈值电压的负偏移度，基于负偏移度检测亮缺陷像素，并且生成用于亮瑕疵的补偿灰度值 像素。