Abstract:
A unit pixel includes a circuit structure, first and second wiring patterns, an interlayer insulating layer, a planarization layer, and a light emission structure. The first wiring pattern disposed on the circuit structure has a first bump structure. The interlayer insulating layer covers the circuit structure and the first wiring pattern. The second wiring pattern disposed on the interlayer insulating layer overlaps the first wiring pattern and has a second bump structure. The planarization layer covers the interlayer insulating layer and the second wiring pattern and includes a via-hole exposing at least a portion of the second wiring pattern. The light emission structure contacts the second wiring pattern through the via-hole. The first and second wiring patterns and the interlayer insulating layer form a capacitor, the light emission structure includes an OLED, and the capacitor is directly connected to an anode of the OLED.
Abstract:
An organic light emitting display device includes a pixel unit and a driving unit. The pixel unit includes at least one pixel and the driving unit is configured to drive the pixel unit. The at least one pixel includes a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a first capacitor, a second capacitor, an organic light emitting diode, a third capacitor, and a driving transistor.
Abstract:
A degradation compensating pixel circuit includes: an organic light emitting diode (OLED); a driving circuit including a first capacitor and a first transistor, the first capacitor being configured to be charged in response to a data signal and a scan signal, the first transistor being configured to drive the OLED according to a first voltage between first and second terminals of the first capacitor, the first terminal of the first capacitor being configured to receive a supply voltage, the second terminal of the first capacitor being coupled to a gate terminal of the first transistor; and a degradation compensating circuit coupled to a source terminal of the first transistor and the gate terminal of the first transistor, the degradation compensating circuit being configured to change the first voltage according to a first current of the first transistor.
Abstract:
A method of forming a polycrystalline silicon layer includes forming a first amorphous silicon layer and forming a second amorphous silicon layer such that the first amorphous silicon layer and the second amorphous silicon layer have different film qualities from each other, and crystallizing the first amorphous silicon layer and the second amorphous silicon layer using a metal catalyst to form a first polycrystalline silicon layer and a second polycrystalline silicon layer. A thin film transistor includes the polycrystalline silicon layer formed by the method and an organic light emitting device includes the thin film transistor.
Abstract:
An organic light emitting diode display including: a substrate; a plurality of first signal lines on the substrate extending in a first direction; a first insulating layer covering the substrate and the first signal lines; a plurality of auxiliary signal lines formed on the first insulating layer and overlapping the first signal lines; a second insulating layer covering the auxiliary signal lines; a plurality of first signal line connecting members formed on the second insulating layer while overlapping parts of the auxiliary signal lines; a plurality of second signal lines crossing the first signal lines; a plurality of switching transistors and a plurality of driving transistors connected with the first signal lines and the second signal lines; and a plurality of organic light emitting diodes electrically connected to the driving transistors, where the first signal line connecting members connect the first signal lines to the auxiliary signal lines.
Abstract:
There is provided a pixel having an improved display quality. The pixel includes an OLED, a first transistor including a first electrode coupled to a data line and a second electrode coupled to an anode electrode of the OLED, and configured to control a current supplied to the OLED based on a voltage applied to a first node; a second transistor coupled between the data line and a second node; a third transistor coupled between the second node and a first power line for supplying reference power; and a first capacitor coupled between the first node and the second node.
Abstract:
A display device including: a substrate; a first semiconductor layer disposed on the substrate; a second semiconductor layer disposed on the substrate and adjacent to the first semiconductor layer; a first insulation layer disposed on both the first semiconductor layer and the second semiconductor layer, the first insulation layer including a first opening forming a space between the first semiconductor layer and the second semiconductor layer; and a second insulation layer disposed on the first insulation layer and that fills the first opening.
Abstract:
A pixel includes an organic light emitting diode, a first driver and a second driver. The second driver controls an amount of current supplied from a first power source to the organic light emitting diode, corresponding to a previous data signal. The first driver stores a current data signal supplied from a data line and supplies the previous data signal to the second driver. In the pixel, the second driver includes a sixth transistor coupled between an initialization power source and a first node coupled to a gate electrode of a first transistor, the sixth transistor being configured to turn on when a first control signal is supplied; and a seventh transistor coupled between the first power source and a second node commonly coupled to the first and second drivers, the seventh transistor being configured to turn on when the first control signal is supplied.