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Display device and method for driving the same

專利號
US10867559B2
公開日期
2020-12-15
申請人
Samsung Display Co., Ltd.（KR Yongin-si）
發(fā)明人
Jun Hyun Park; Cheol-Gon Lee; Yang-Hwa Choi
IPC分類
G09G3/3266; G09G3/3225; G09G3/3275; G09G3/3233
技術(shù)領域
voltage,transistor,elvdd,elvdd_l,first,node,scan,level,emission,light
地域： Yongin-si

摘要

A display device including: a scan driver that transmits scan signals to scan lines; a data driver that data signals to data lines; and a display portion that includes pixels, respectively connected to the corresponding scan lines and corresponding data lines, and displays an image by the pixels that simultaneously emit light according to the corresponding data signals, wherein each of pixels includes: an organic light emitting diode; a first transistor that includes a gate connected to a first node, and is connected between first power and an anode of the organic light emitting diode; a second transistor that includes a gate connected to a corresponding scan line and transmits the corresponding data signal to the first node; and a first capacitor that is connected to the first node, and stores a data voltage according to the data signal.

說明書

The controller 50 of FIG. 8 transmits a light emission driving control signal ECS that controls operation of a light emission control driver to the light emission control driver 60. The light emission control driver 60 receives the light emission driving control signal ECS from the controller 50 and generates the plurality of light emission control signals.

FIG. 9 is a circuit diagram of an example of a pixel included in the display device of FIG. 8.

A pixel PX-3 shown in FIG. 8 includes an organic light emitting diode OLED, a first capacitor Cst, and first to fourth transistors T21, T22, T23, and T24.

The first transistor T21 may include a gate connected to a first node N21, a first end connected to a second node N22, and a second end connected to an anode of the organic light emitting diode OLED. A driving current flows through the first transistor T21 according to a corresponding data signal D[i].

The driving current is a current that corresponds to the voltage difference between the gate and the first end of the transistor T21, and the driving current is changed corresponding to a data voltage based on an applied data signal D[j].

權(quán)利要求

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