Organic electro-luminescence device and method for driving the same
AssigneeLG.Philips LCD Co., Ltd.
InventorJuhnSuk Yoo
Life of this patent
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Abstract
An organic electro-luminescence device according to an embodiment includes a light-emitting device in a pixel for emitting light; a data line for providing a data voltage; and a driving transistor connected to the light emitting device, wherein when the driving transistor is turned on to drive the light-emitting device, a driving voltage applied to the light emitting device reaches a value of a difference between a supply voltage and the data voltage.
Claims27
An organic electro-luminescence device, comprising:
- a light-emitting device in a pixel for emitting light;
- a data line for providing a data voltage;
- and
- a driving transistor connected to the light emitting device, wherein when the driving transistor is turned on to drive the light-emitting device, a driving voltage applied to the light emitting device reaches a value of a difference between a supply voltage and the data voltage.
An organic electro-luminescence device, comprising:
- a light-emitting device in a pixel for emitting light;
- a driving transistor connected to the light emitting device for driving the light-emitting device;
- a data line for providing a data voltage;
- a first switching device connected to the data line;
- a capacitor connected to and between the first switching device and a gate terminal of the driving transistor;
- a second switching device between the gate of the driving transistor and a drain of the driving transistor;
- a third switching device between one of an anode and a cathode of the light-emitting device and a node between the first switching device and the capacitor;
- and
- a scan line connected to the first switching device, the second switching device and the third switching device for providing a scan signal to selectively turn on the first switching device, the second switching device and the third switching device.
A method for driving an organic electro-luminescent display device, comprising:
- supplying a data voltage via a data line in a first period to charge a capacitor between the data line and a driving transistor to a value of a difference between the data voltage and a threshold voltage of the driving transistor;
- and
- applying a driving voltage via the driving transistor and the capacitor to a light emitting device with a value of a difference between a supply voltage and the data voltage in a second period.
Dependencies are inferred from the claim text.