公开(公告)号：US20210104681A1

公开(公告)日：2021-04-08

申请号：US16859894

申请日：2020-04-27

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojeong KIM ,  Minje KIM ,  Eungdo KIM ,  Hyunyoung KIM ,  Hyosup SHIN ,  Seokgyu YOON ,  Youngki LEE ,  Jungsub LEE ,  Jiyoung LEE ,  Hyejin JUNG ,  Kunwook CHO ,  Hyeongu CHO ,  Minsoo CHOI ,  Youngeun CHOI ,  Jaejin LYU

IPC: H01L51/00 ,  C09K11/06

Abstract: An organic light-emitting device having improved efficiency and lifespan includes: a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer includes a first compound, a second compound, a third compound, and a fourth compound, the first compound, the second compound, the third compound, and the fourth compound are different from each other, the third compound includes a metal element having an atomic number of 40 or more, the fourth compound includes boron (B), the third compound and the fourth compound each satisfy Conditions 1-1 and 1-2 below, and the fourth compound satisfies Condition 2 or 3: T1(C3)onset≥S1(C4)onset  Condition 1-1 T1(C3)max≥S1(C4)max  Condition 1-2 KRISC(C4)≥103S−1  Condition 2 f(C4)≥0.1.  Condition 3

公开(公告)号：US20180196301A1

公开(公告)日：2018-07-12

申请号：US15866067

申请日：2018-01-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Minsoo CHOI ,  Seunghwan MOON ,  Okkwon SHIN ,  Junpyo LEE

IPC: G02F1/1333 ,  G09G3/36

CPC classification number: G02F1/133382 ,  G09G3/006 ,  G09G3/3648 ,  G09G2310/0221 ,  G09G2320/0209 ,  G09G2320/0223 ,  G09G2320/0252 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2340/16 ,  G09G2360/16

Abstract: A liquid crystal display device includes an upper substrate, a lower substrate including a data line and a gate line insulated from the data line, a liquid crystal layer between the lower substrate and the upper substrate, a current sensing unit which detects a data current based on a data signal applied to the data line so as to detect a change in a liquid crystal capacitance of the liquid crystal layer, a rectifying amplifier which rectifies or amplifies the detected data current so as to generate and output a rectified signal, a pulse generator which generates a sensing pulse by comparing the rectified signal with a reference voltage, and a duty width detector which detects a duty width of the sensing pulse generated by the pulse generator where the reference voltage is set based on a voltage difference between data signals successively applied to the data line.