Circuit for driving pixels of an organic light emitting display

Details Circuit for driving pixels of an organic light emitting display Circuit for driving pixels of an organic light emitting display

2007-07-03

2007-07-03

Vo, Tuyet Thi (Department: 2821)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S092000, C345S091000, C345S076000

Reexamination Certificate

active

11161130

ABSTRACT:
A circuit and a method for driving pixels of an organic light-emitting display are provided. The circuit comprises a thin-film transistor having a source terminal connected to a voltage source, a storage capacitor having a first terminal connected to a gate terminal of the thin-film transistor, and an organic light-emitting diode having a cathode connected to a ground. The gate terminal and a drain terminal of the thin-film transistor are connected in a clamping phase and a reverse phase. A second terminal of the storage capacitor is connected to the ground in the clamping phase, and is connected to a data line in a light-emitting phase and in the reverse phase. An anode of the organic light-emitting diode is connected to the drain terminal of the thin-film transistor in the light-emitting phase and in the reverse phase.

REFERENCES:
patent: 7129524 (2006-10-01), Lee
patent: 2003/0016196 (2003-01-01), Lueder et al.
patent: 2006/0145960 (2006-07-01), Koga et al.
Article titled “A Simple and Effective ac Pixel Driving Circuit for Active Matrix OLED” offered by Yujuan et al. InIEEE Transactions On Electron Devices, vol. 50, No. 4, pp. 1137-1140, Apr. 2003.
Article titled “Improvement of Current-Voltage Characteristics in Organic Light Emitting Diodes by Application of Reversed-Bias Voltage” published by Zou et al. inJapanese Journal of Applied Physics, vol. 37, pp. 1406-1408, Nov. 1998.
Article titled “A 2.5-Inch OLED Display with a Three-TFT Pixel Circuit for Clamped Inverter Driving” published by Kageyama et al. inSID 04 Digest, pp. 1394-1397, 2004.

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