Samsung Display Co., Ltd.

Sang-Ho Seo

Ji-Eun Lee

Jae-Yong Lee

Sun-Ja Kwon

So-Young Kang

Jeong-Hwan Kim

An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a substrate and an active pattern formed over the substrate and including first to fourth regions. A gate insulation layer is formed over the active pattern and the substrate, and a first gate electrode is formed over the gate insulation layer and partially overlapping the active pattern. The first gate electrode, the first region and the second region define a first transistor. A second gate electrode is formed on the same layer as the first gate electrode. The second gate electrode, the third region and the fourth region define a second transistor, and the second gate electrode, the second region and the fourth region define a third transistor. A first insulating interlayer is formed over the first gate electrode, the second gate electrode, and the gate insulation layer.

Device including first and second capacitors and a storage capacitor

Organic light-emitting diode display

An organic light emitting display includes: pixels respectively positioned in areas defined by scan lines and data lines; and a data driver configured to supply a data signal to the data lines, the data signal includes a first data signal corresponding to an emission of the pixels and a second data signal corresponding to a non-emission of the pixels, wherein each pixel includes: an organic light emitting diode; a first transistor coupled to the organic light emitting diode, the first transistor configured to be a current source driven in a saturation region; a second transistor coupled as a current mirror to the first transistor, the second transistor configured to control an amount of a current flowing in the first transistor; and a third transistor coupled to the second transistor, the third transistor configured to be a switch driven in a linear region, according to the data signal.

Pixel and organic light emitting display device including current mirror

Growing community of inventors

Cheonan-si, South Korea

Sang-Ho Seo