Light-emitting device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorMakoto Kaneyasu
Life of this patent
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Abstract
To provide a light-emitting device capable of suppressing the display of an afterimage. A plurality of pixels arranged in n rows and m columns (n and m are each an integer of 2 or more) is supplied with a first signal containing image data and a second signal for initializing the pixels. Each pixel includes a first transistor for controlling the input of the first signal and a second transistor for controlling the input of the second signal. The first transistor in a k-th row (k is an integer of 1 to n) and the second transistor in a k+1-th row are turned on at the same time, so that the pixels are initialized and display images effectively.
Claims11
A light-emitting device comprising:
- a first pixel comprising:
- a first transistor;
- a second transistor;
- a third transistor, a gate of the third transistor directly connected to one of a source and a drain of the first transistor and one of a source and a drain of the second transistor;
- and
- a first light-emitting element, a first terminal of the first light-emitting element directly connected to one of a source and a drain of the third transistor;
- a second pixel comprising:
- a fourth transistor;
- a fifth transistor;
- a sixth transistor, a gate of the sixth transistor directly connected to one of a source and a drain of the fourth transistor and one of a source and a drain of the fifth transistor;
- and
- a second light-emitting element, a first terminal of the second light-emitting element directly connected to one of a source and a drain of the sixth transistor;
- a first wiring electrically connected to a gate of the second transistor;
- a second wiring directly connected to a gate of the first transistor and a gate of the fifth transistor;
- a third wiring electrically connected to a gate of the fourth transistor;
- a fourth wiring electrically connected to the other of the source and the drain of the first transistor and the other of the source and the drain of the fourth transistor;
- and
- a fifth wiring electrically connected to the other of the source and the drain of the second transistor and the other of the source and the drain of the fifth transistor.
A light-emitting device comprising:
- a first pixel comprising:
- a first transistor;
- a second transistor;
- a third transistor, a gate of the third transistor directly connected to one of a source and a drain of the first transistor and one of a source and a drain of the second transistor;
- and
- a first light-emitting element, a first terminal of the first light-emitting element directly connected to one of a source and a drain of the third transistor;
- a second pixel comprising:
- a fourth transistor;
- a fifth transistor;
- a sixth transistor, a gate of the sixth transistor directly connected to one of a source and a drain of the fourth transistor and one of a source and a drain of the fifth transistor;
- and
- a second light-emitting element, a first terminal of the second light-emitting element directly connected to one of a source and a drain of the sixth transistor;
- a first wiring electrically connected to a gate of the second transistor;
- a second wiring directly connected to a gate of the first transistor and a gate of the fifth transistor;
- a third wiring electrically connected to a gate of the fourth transistor;
- a fourth wiring electrically connected to the other of the source and the drain of the first transistor and the other of the source and the drain of the fourth transistor;
- and
- a fifth wiring electrically connected to the other of the source and the drain of the second transistor and the other of the source and the drain of the fifth transistor,
- wherein the fourth wiring is supplied with a signal containing image data, and
- wherein the fifth wiring is supplied with the signal before supplying the signal to the fourth wiring.
Dependencies are inferred from the claim text.