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US 10,540,928 B2Granted
Electroluminescent display device
AssigneeLG Display Co., Ltd.
InventorsDonghyun Kim, JuhnSuk Yoo, JungChul Kim, Haeyoon Jeong, Hoonju Chung
Life of this patent
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Abstract
Disclosed is an electroluminescent display device. The electroluminescent display device includes a display area and a non-display area. And the electroluminescent display device includes a display panel including a plurality of pixel lines each including a plurality of pixel circuits.
Claims18
An electroluminescent display device comprising:
- a display panel including a plurality of pixel lines each including a plurality of pixel circuits,
- wherein each of the plurality of pixel circuits included in an nth (where n is a natural number) pixel line of the plurality of pixel lines comprises:
- a driving transistor connected between a first node and a third node, the driving transistor including a gate connected to a second node;
- a first transistor allowing a current to flow between the second node and the third node in response to an n−1st scan signal;
- a second transistor applying a reference voltage to the first node in response to an nth scan signal;
- a third transistor applying a high-level power voltage to the first node in response to an nth emission signal;
- a fourth transistor allowing a current to flow between the third node and a fourth node in response to the n+1st emission signal;
- a fifth transistor applying an initialization voltage to the fourth node in response to the n−1st scan signal;
- a sixth transistor applying the high-level power voltage to a fifth node in response to the nth emission signal;
- a seventh transistor applying a data voltage to the fifth node in response to the n−1st scan signal;
- a capacitor connected between the second node and the fifth node;
- and
- a light emitting device including an node connected to the fourth node and a cathode connected to a line to which a low-level power voltage is applied.
10 more elements
An electroluminescent display device comprising:
- a display panel including a plurality of pixel lines each including a plurality of pixel circuits,
- wherein each of the plurality of pixel circuits included in an nth (where n is a natural number) pixel line of the plurality of pixel lines comprises:
- a driving transistor connected between a first node and a third node, the driving transistor including a gate connected to a second node;
- a first transistor allowing a current to flow between the second node and the third node in response to an n+1st scan signal;
- a second transistor applying a reference voltage to the first node in response to an nth scan signal;
- a third transistor applying a high-level power voltage to the first node in response to an nth emission signal;
- a fifth transistor applying an initialization voltage to a fourth node in response to an n−1st scan signal;
- a sixth transistor applying the high-level power voltage to a fifth node in response to the nth emission signal;
- a ninth transistor applying the high-level power voltage to the fifth node in response to the n−1st scan signal;
- a seventh transistor applying a data voltage to the fifth node in response to the n+1st scan signal;
- a capacitor connected between the second node and the fifth node;
- and
- a light emitting device including an node connected to the fourth node and a cathode connected to a line to which a low-level power voltage is applied.
10 more elements
Dependencies are inferred from the claim text.