公开(公告)号：US20180174522A1

公开(公告)日：2018-06-21

申请号：US15823406

申请日：2017-11-27

Applicant: LG Display Co., Ltd.

Inventor： Changwoo LEE ,  Jeongtae HWANG ,  Byungjae LEE

IPC: G09G3/3275 ,  G09G3/3233 ,  G09G3/3258

CPC classification number: G09G3/3275 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3291 ,  G09G2300/043 ,  G09G2310/0259 ,  G09G2320/0233 ,  G09G2320/0693 ,  G09G2330/12

Abstract: The present disclosure provides a display device. The display device may comprise a display panel including a plurality of pixels, a reference current source providing a reference current, and a source drive IC including sensing units for sampling a signal input from the pixel through a sensing line and an ADC connected to the sensing units and obtaining sensing data related to a driving of the pixel. The source drive IC may further comprise a switch array connecting the sensing lines and the sensing units, and the switch array in each sensing unit may comprise a first switch for connecting a corresponding sensing unit to a first sensing line corresponding to the corresponding sensing unit and a second switch for connecting the corresponding sensing unit to a second sensing line adjacent and previous to the first sensing line or the reference current source.

公开(公告)号：US20200168163A1

公开(公告)日：2020-05-28

申请号：US16587843

申请日：2019-09-30

Applicant: LG Display Co., Ltd.

Inventor： Taewook KIM ,  Jungyoon YI ,  Byungjae LEE

IPC: G09G3/3291 ,  G09G3/3233

Abstract: Data drivers and organic light emitting display devices having data drivers are provided in which a number of amplifiers for driving a display panel is reduced. A data driver includes an analog-to-digital converter, first and second amplifier circuits, a first switch coupled to an output of the first amplifier circuit, and a second switch and a third switch coupled to an output of the second amplifier circuit. The first switch is configured to selectively couple the output of the first amplifier circuit to a first data line and to second data line of a display panel. The second switch is configured to selectively couple the output of the second amplifier circuit to the second data line and to the analog-to-digital converter. The third switch is configured to selectively couple the output of the second amplifier circuit to a sensing line of the display panel.

公开(公告)号：US20240221625A1

公开(公告)日：2024-07-04

申请号：US18534870

申请日：2023-12-11

Applicant: LG Display Co., Ltd

Inventor： SunYoon KIM ,  Jin-Hyun JUNG ,  Byungjae LEE

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/0275 ,  G09G2310/08

Abstract: A display device includes a driving transistor used for driving a light emitting element; a scanning transistor electrically connected between a first node that is a gate node of the driving transistor and a data line to which a data voltage is supplied; a storage capacitor electrically connected between a second node of the driving transistor and the first node; and a charging ratio sensing unit electrically connected to the data line through an input line, wherein the charging ratio sensing unit senses a voltage charged in the storage capacitor through the input line. Accordingly, it may efficiently improve a pixel charging ratio by a charging ratio sensing unit connected to a data line through an input line sensing a voltage charged in a storage capacitor through the input line.

公开(公告)号：US20240221559A1

公开(公告)日：2024-07-04

申请号：US18517052

申请日：2023-11-22

Applicant: LG Display Co., Ltd.

Inventor： Byungjae LEE ,  Jin-Hyun JUNG ,  Changwoo LEE ,  Yumin HONG

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/2096 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/12 ,  G09G2370/08

Abstract: Embodiments of the present disclosure relate to a display device and a driving method. A data driving circuit transmits feedback data generated on the basis of input data to a controller, and the controller generates corrected data by comparing the input data and the feedback data. It is possible to automatically detect noise, and it is possible to detect noise in real time.

公开(公告)号：US20240212574A1

公开(公告)日：2024-06-27

申请号：US18511490

申请日：2023-11-16

Applicant: LG Display Co., Ltd.

Inventor： SunYoon KIM ,  Jin-Hyun JUNG ,  Byungjae LEE ,  Changwoo LEE

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2096 ,  G09G3/32 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/041

Abstract: Discussed are a display panel and a display device having the same. The display panel includes a plurality of subpixels. A gate line, a data line, and a reference voltage line are further disposed on the display panel. A gate driving circuit supplies a scan signal to the gate line. A data driving circuit converts image data into a data voltage and supplies the data voltages to the data line. A timing controller controls the gate driving circuit and the data driving circuit and generates compensation data for the image data using a sensing voltage detected through the reference voltage line. The display panel includes a plurality of sensing transistors disposed around a corresponding subpixel among the plurality of subpixels to connect the data line and the reference voltage line.

公开(公告)号：US20180182278A1

公开(公告)日：2018-06-28

申请号：US15840135

申请日：2017-12-13

Applicant: LG Display Co., Ltd.

Inventor： Kyungrok KIM ,  Taegung KIM ,  Byungjae LEE

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/2018 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2310/0221 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/045 ,  G09G2360/04 ,  G09G2370/08

Abstract: An electroluminescent display and a driving device of the electroluminescent display are disclosed. The electroluminescent display includes first and second active areas divided from a screen, a first timing controller configured to transmit pixel data of the first active area to be displayed on the first active area to a first driving circuit writing pixel data to pixels of the first active area, a second timing controller configured to transmit pixel data of the second active area to be displayed on the second active area to a second driving circuit writing pixel data to pixels of the second active area, and a bridge circuit configured to distribute an input image to the first and second timing controllers and synchronize the first and second timing controllers when receiving a synchronization request signal from the first and second timing controllers.