Light-Emitting Device
First Claim
1. A light-emitting device comprising:
- a light-emitting element;
a first power supply line having a first potential;
a second power supply line having a second potential;
a first transistor for controlling conduction between the first power supply line and the light-emitting element;
a second transistor for controlling whether the second potential applied from the second power supply line is outputted depending on a video signal inputted to a gate of the second transistor;
a switch for selecting either the first potential applied from the first power supply line or an output of the second transistor; and
a third transistor for selecting whether either the first potential or the output of the second transistor selected by the switch is applied to a gate of the first transistor.
1 Assignment
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Accused Products
Abstract
The amplitude of a potential of a signal line is decreased and a scan line driver circuit is prevented from being excessively loaded. A light-emitting device includes a light-emitting element; a first power supply line having a first potential; a second power supply line having a second potential; a first transistor for controlling a connection between the first power supply line and the light-emitting element; a second transistor, which is controlled in accordance with a video signal, whether outputting the second potential applied from the second power supply line or not; a switching element for selecting either the first potential applied from the first power supply line or the output of the second transistor; and a third transistor for selecting whether the first potential or the output of the second transistor which is selected by the switch is applied to a gate of the first transistor.
31 Citations
19 Claims
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1. A light-emitting device comprising:
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a light-emitting element; a first power supply line having a first potential; a second power supply line having a second potential; a first transistor for controlling conduction between the first power supply line and the light-emitting element; a second transistor for controlling whether the second potential applied from the second power supply line is outputted depending on a video signal inputted to a gate of the second transistor; a switch for selecting either the first potential applied from the first power supply line or an output of the second transistor; and a third transistor for selecting whether either the first potential or the output of the second transistor selected by the switch is applied to a gate of the first transistor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A light-emitting device comprising a plurality of pixels sharing a first scan line and a second scan line,
wherein each of the plurality of pixels includes a light-emitting element, a first power supply line having a first potential, a second power supply line having a second potential, a first transistor for controlling conduction between the first power supply line and the light-emitting element, a second transistor for controlling whether the second potential applied form the second power supply line is outputted depending on a video signal inputted to a gate of the second transistor, a switch for selecting either the first potential applied from the first power supply line or an output of the second transistor in accordance with a potential of the first scan line, and a third transistor for selecting whether either the first potential or the output of the second transistor selected by the switch is applied to a gate of the first transistor.
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13. A light-emitting device comprising:
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a light-emitting element; a first transistor; a second transistor; a third transistor; a fourth transistor; and a fifth transistor, wherein one of a source and a drain of the first transistor is electrically connected to the light-emitting element, wherein the other of the source and the drain of the first transistor is electrically connected to a first wiring; wherein a gate of the first transistor is electrically connected to one of a source and a drain of the second transistor, wherein the other of the source and the drain of the second transistor is electrically connected to one of a source and a drain of the third transistor and one of a source and a drain of the fourth transistor, wherein the other of the source and the drain of the third transistor is electrically connected to the first wiring, wherein the other of the source and the drain of the fourth transistor is electrically connected to one of a source and a drain of the fifth transistor, wherein the other of the source and the drain of the fifth transistor is electrically connected to a second wiring, and wherein a gate of the fifth transistor is electrically connected to the fifth wiring. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification