公开(公告)号：US10446621B2

公开(公告)日：2019-10-15

申请号：US15685887

申请日：2017-08-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Changhee Kim ,  Hyemin Park

IPC: H01L27/32 ,  G09G3/3225 ,  G09G3/3233

Abstract: A display and degradation sensing method, includes a display panel having a plurality of pixels that each comprise an Organic Light Emitting Diode (OLED) and Thin Film Transistor (TFT). The pixels are divided into multiple pixel groups of two or more pixels, each connected to different data lines but to the same gate and sensing lines. A gate driving circuit supplies a scan control signal to the gate line. A data driving circuit selectively supplies turn-on driving data voltage and turn-off data voltage to the data lines in sync with the scan control signal; a sensing circuit outputs (i) a first sensing value based upon an OLED threshold voltage of a sensing pixel, and (ii) a second sensing value based upon a kickback current. A sensing value correction circuit determines a final sensing value for the OLED threshold voltage based on the first sensing value and the second sensing value.

公开(公告)号：US10541286B2

公开(公告)日：2020-01-21

申请号：US15697024

申请日：2017-09-06

Applicant: LG Display Co., Ltd.

Inventor： Hyemin Park ,  Hunki Shin ,  Dongik Kim ,  Jinwoo Lee

IPC: H01L27/32 ,  H01L29/423 ,  H01L51/10

Abstract: The present disclosure relates to an organic light emitting display device which comprises a plurality of sub-pixels each of which comprises an OLED, a driving TFT, a first TFT for applying a data voltage to a gate electrode of the driving TFT, a second TFT for applying a reference voltage to a source electrode of the driving TFT, and a storage capacitor, a data driver for outputting the data voltage to a data line and the reference voltage to a reference line, and a gate driving unit for outputting signals to a first gate line connected to the gate electrode of the first TFT and a second gate line connected to the gate electrode of the second TFT, wherein two adjacent sub-pixels emitting a same color is supplied with the data voltages through different data lines and share the first gate line and the second gate line.

公开(公告)号：US20240215405A1

公开(公告)日：2024-06-27

申请号：US18397456

申请日：2023-12-27

Applicant: LG Display Co., Ltd.

Inventor： Sejong Seong ,  KyungMin Kim ,  Hyemin Park ,  SeHong Park ,  Wonrae Kim ,  Inae Choi ,  SeoHyun Nam

IPC: H10K59/80 ,  H10K59/131

CPC classification number: H10K59/878 ,  H10K59/131 ,  H10K59/351

Abstract: A display apparatus is discussed, which can improve light extraction efficiency of light emitted from a light emitting element layer. In one example, the display apparatus includes a substrate having a plurality of pixels with a plurality of subpixels, a pattern portion disposed on the substrate and formed to be concave between the plurality of subpixels, a reflective portion on the pattern portion, and a plurality of lines for driving the plurality of subpixels. The plurality of subpixels include a light emission area and a non-light emission area adjacent to the light emission area, and the plurality of lines are disposed in the non-light emission area. Further, the pattern portion is provided to surround the light emission area, and at least one of the plurality of lines partially overlaps the pattern portion.