Display device and electronic device provided with the same
First Claim
1. A display device comprising:
- an n-channel transistor including a first terminal and a second terminal, wherein the first terminal of the n-channel transistor is electrically connected to a power supply line and the second terminal of the n-channel transistor is electrically connected to a light-emitting element;
a p-channel transistor including a first terminal and a second terminal, wherein the first terminal of the p-channel transistor is electrically connected to the power supply line and the second terminal of the p-channel transistor is electrically connected to the light-emitting element; and
a switching element including a first terminal and a second terminal, wherein the first terminal of the switching element is electrically connected to a data line and the second terminal of the switching element is electrically connected to a gate electrode of the n-channel transistor and a gate electrode of the p-channel transistor.
1 Assignment
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Accused Products
Abstract
An object is to suppress decrease in luminance and appearance of flicker of a still image and to control a threshold voltage of a transistor for driving an EL element even in a state where the EL element continues to emit light for a certain period. An n-channel transistor and a p-channel transistor are provided as driving transistors for driving a light-emitting element, and a polarity of a potential which is supplied from a data line is reversed every given period and supplied to gates of the driving transistors in each pixel, whereby the threshold voltages of the driving transistors are controlled and change of luminance of the light-emitting element due to the threshold voltage shifts of the driving transistors can be reduced.
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Citations
11 Claims
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1. A display device comprising:
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an n-channel transistor including a first terminal and a second terminal, wherein the first terminal of the n-channel transistor is electrically connected to a power supply line and the second terminal of the n-channel transistor is electrically connected to a light-emitting element; a p-channel transistor including a first terminal and a second terminal, wherein the first terminal of the p-channel transistor is electrically connected to the power supply line and the second terminal of the p-channel transistor is electrically connected to the light-emitting element; and a switching element including a first terminal and a second terminal, wherein the first terminal of the switching element is electrically connected to a data line and the second terminal of the switching element is electrically connected to a gate electrode of the n-channel transistor and a gate electrode of the p-channel transistor. - View Dependent Claims (5, 7, 8, 9, 10, 11)
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2. A display device comprising:
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an n-channel transistor including a first terminal and a second terminal, wherein the first terminal of the n-channel transistor is electrically connected to a power supply line and the second terminal of the n-channel transistor is electrically connected to a light-emitting element; a p-channel transistor including a first terminal and a second terminal, wherein the first terminal of the p-channel transistor is electrically connected to the power supply line and the second terminal of the p-channel transistor is electrically connected to the light-emitting element; a capacitor element including a first terminal and a second terminal, wherein the first terminal of the capacitor element is electrically connected to a gate electrode of the n-channel transistor and a gate electrode of the p-channel transistor and the second terminal of the capacitor element is electrically connected to the power supply line; and a switching element including a first terminal and a second terminal, wherein the first terminal of the switching element is electrically connected to a data line and the second terminal of the switching element is electrically connected to the gate electrode of the n-channel transistor and the gate electrode of the p-channel transistor.
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3. A display device comprising:
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an n-channel transistor including a first terminal and a second terminal, wherein the first terminal of the n-channel transistor is electrically connected to a first power supply line and the second terminal of the n-channel transistor is electrically connected to a light-emitting element; a p-channel transistor including a first terminal and a second terminal, wherein the first terminal of the p-channel transistor is electrically connected to the first power supply line and the second terminal of the p-channel transistor is electrically connected to the light-emitting element; a first switching element including a first terminal and a second terminal, wherein the first terminal of the first switching element is electrically connected to a data line and the second terminal of the first switching element is electrically connected to a gate electrode of the n-channel transistor and a gate electrode of the p-channel transistor; and a second switching element including a first terminal and a second terminal, wherein the first terminal of the second switching element is electrically connected to a second power supply line and the second terminal of the second switching element is electrically connected to the gate electrode of the n-channel transistor and the gate electrode of the p-channel transistor. - View Dependent Claims (6)
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4. A display device comprising:
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an n-channel transistor including a first terminal and a second terminal, wherein the first terminal of the n-channel transistor is electrically connected to a first power supply line and the second terminal of the n-channel transistor is electrically connected to a light-emitting element; a p-channel transistor including a first terminal and a second terminal, wherein the first terminal of the p-channel transistor is electrically connected to the first power supply line and the second terminal of the p-channel transistor is electrically connected to the light-emitting element; a capacitor element including a first terminal and a second terminal, wherein the first terminal of the capacitor element is electrically connected to a gate electrode of the n-channel transistor and a gate electrode of the p-channel transistor and the second terminal of the capacitor element is electrically connected to the first power supply line; a first switching element including a first terminal and a second terminal, wherein the first terminal of the first switching element is electrically connected to a data line and the second terminal of the first switching element is electrically connected to the gate electrode of the n-channel transistor and the gate electrode of the p-channel transistor; and a second switching element including a first terminal and a second terminal, wherein the first terminal of the second switching element is electrically connected to a second power supply line and the second terminal of the second switching element is electrically connected to the gate electrode of the n-channel transistor and the gate electrode of the p-channel transistor.
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Specification