Organic Light Emitting Diode Display Device and Method for Driving the Same
AssigneeLG Display Co., Ltd.
InventorsSanghun Yoon, ChangHeon Kang
Life of this patent
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Abstract
An organic light emitting diode display device and a method for driving the same are provided. The organic light emitting diode display device includes an organic light emitting diode disposed on each of a plurality of pixels, and a pixel driving circuit configured to drive the organic light emitting diode.
Claims10
An organic light emitting diode display device comprising:
- an organic light emitting diode disposed on each of a plurality of pixels;
- and
- a pixel driving circuit configured to drive the organic light emitting diode,
- wherein the pixel driving circuit includes:
- a driving switching element connected to the organic light emitting diode and electrically connected between a high-potential voltage supply line and a low-potential voltage supply line;
- a first switching element connected to a gate of the driving switching element and a first scan signal line;
- a second switching element connected to a drain of the driving switching element and a first emission control signal line;
- a first capacitor connected between the gate of the driving switching element and a first node;
- a third switching element connected to a source of the driving switching element, a second scan signal line and an initialization voltage line;
- a fourth switching element connected to the first node and a second emission control signal line;
- a fifth switching element connected to the first node, a third scan signal line and a data voltage line and
- a second capacitor connected between the gate of the driving switching element and the source of the driving switching element.
A method for driving an organic light emitting diode display device, the method including an organic light emitting diode disposed on each of a plurality of pixels and a pixel driving circuit configured to drive the organic light emitting diode and including a driving switching element connected to the organic light emitting diode and electrically connected between a high-potential voltage supply line and a low-potential voltage supply line, a first switching element connected to a gate of the driving switching element and a first scan signal line, a second switching element connected to a drain of the driving switching element and a first emission control signal line, a first capacitor connected between the gate of the driving switching element and a first node, a third switching element connected to a source of the driving switching element, a second scan signal line, and an initialization voltage line, a fourth switching element connected to the first node and a second emission control signal line, a fifth switching element connected to the first node, a third scan signal line, and a data voltage line, and a second capacitor connected between the gate of the driving switching element and the source of the driving switching element,
- wherein the method for driving the organic light emitting diode display device comprises:
- initializing a voltage in the source of the driving switching element by turning on the third switching element;
- sampling the voltage in the source of the driving switching element by turning on the second switching element;
- writing and programming a data voltage on the first node by turning on the fifth switching element;
- writing and coupling a reference voltage on the first node by turning on the fourth switching element;
- and
- making the organic light emitting diode emit light by turning on all the second switching element and the driving switching element.
Dependencies are inferred from the claim text.