Pixel circuit
AssigneeAu Optronics Corporation
InventorMao-Hsun Cheng
Life of this patent
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Abstract
A pixel circuit includes a light emitting component, a storage capacitor, a driving transistor, a first switch, a second switch, a third switch, and a fourth switch. A first end of the driving transistor is configured to receive a supply voltage, and a second end of the driving transistor is electrically connected to an anode end of the light emitting component. The first switch is configured to provide a first reference voltage to a second end of the storage capacitor. The second switch is configured to provide the supply voltage to the first end of the storage capacitor. The third switch and the fourth switch are configured to provide an operating voltage corresponding to a data voltage and a threshold voltage of the third switch to the second end of the storage capacitor.
Claims20
A pixel circuit comprising:
- a light emitting component;
- a storage capacitor;
- a driving transistor, wherein a first end of the driving transistor is configured to receive a supply voltage, a second end of the driving transistor is electrically connected to an anode end of the light emitting component, and a control end of the driving transistor is electrically connected to a first end of the storage capacitor;
- a first switch configured to provide a first reference voltage to a second end of the storage capacitor;
- a second switch configured to provide the supply voltage to the first end of the storage capacitor;
- a third switch electrically connected to the second end of the storage capacitor;
- and
- a fourth switch electrically connected to the third switch and configured to receive a data voltage;
- wherein the third switch and the fourth switch are configured to provide an operating voltage corresponding to the data voltage and a threshold voltage of the third switch to the second end of the storage capacitor.
A pixel circuit, comprising:
- a light-emitting component;
- a storage capacitor;
- a driving transistor, wherein a first end of the driving transistor receives a supply voltage, a second end of the driving transistor is electrically connected to an anode end of the light emitting device, and a control end of the driving transistor is electrically connected to a first end of the storage capacitor;
- a first switch, wherein a first end of the first switch is electrically connected to a second end of the storage capacitor, and a second end of the first switch is configured to receive a first reference voltage;
- a second switch, wherein a first end of the second switch is electrically connected to the first end of the storage capacitor, and a second end of the second switch is configured to receive the supply voltage;
- a third switch, wherein a first end of the third switch is electrically connected to the second end of the storage capacitor, and a second end of the third switch is electrically connected to a control end of the third switch;
- and
- a fourth switch, wherein a first end of the fourth switch is electrically connected to the second end of the third switch, and a second end of the fourth switch is configured to receive a data voltage.
Dependencies are inferred from the claim text.