公开(公告)号：US20200051496A1

公开(公告)日：2020-02-13

申请号：US16538597

申请日：2019-08-12

Applicant: Samsung Display Co., Ltd.

Inventor： Hyungryul KANG ,  Oh Jo KWON ,  Yoshimura HIDEO ,  Bong-Hyun YOU ,  Jaekeun LIM

IPC: G09G3/3225 ,  G09G3/3275 ,  G09G3/3266

Abstract: A display device includes: a display panel including a plurality of pixels; a scan driver connected to the plurality of pixels through a plurality of scan lines; a data driver connected to the plurality of pixels through a plurality of data lines; an emission driver connected to the plurality of pixels through a plurality of emission control lines; a sensing circuit connected to the plurality of pixels through a plurality of sensing lines; and a controller configured to control the scan driver, the data driver, the emission driver and the sensing circuit, wherein, in an active period of each frame period, the scan driver sequentially applies a sensing pulse and a scan pulse to at least one scan line of the plurality of scan lines, and applies the scan pulse to remaining scan lines of the plurality of scan lines.

公开(公告)号：US20150077314A1

公开(公告)日：2015-03-19

申请号：US14253725

申请日：2014-04-15

Applicant: Samsung Display Co., Ltd.

Inventor： Bo Yeon KIM ,  Oh Jo KWON ,  Choong Sun SHIN

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/045

Abstract: A display device is disclosed. In one aspect, the display device includes a plurality of pixels, a plurality of data lines respectively connected to the pixels, and a compensation unit connected to at least one the data lines. The compensation unit includes a first capacitor storing a leakage current of a pixel connected to the data line, a second capacitor storing a difference current, where the difference current is the difference between a reference current and a pixel current measured when a data signal of a reference gray signal is applied to the pixel. The compensation unit also includes a comparator outputting a difference value between the voltages stored in the first and second capacitors. According to embodiments, is possible to measure an accurate pixel current regardless of a leakage current and accurately detect deterioration of a pixel.

Abstract translation: 公开了一种显示装置。 一方面，显示装置包括多个像素，分别连接到像素的多条数据线以及连接到至少一条数据线的补偿单元。 补偿单元包括存储连接到数据线的像素的漏电流的第一电容器，存储差电流的第二电容器，其中差电流是参考电流与当a的数据信号之间测量的像素电流之间的差 将参考灰度信号应用于像素。 补偿单元还包括输出存储在第一和第二电容器中的电压之间的差值的比较器。 根据实施例，可以测量精确的像素电流，而不管漏电流如何，并准确地检测像素的劣化。