Display Device and Electronic Device Using the Same
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsMitsuaki Osame, Taichi Kato
Life of this patent
Estimating the term…
Abstract
A display device with a compensation circuit that applies a fixed potential constantly to a gate electrode of a driving transistor for a certain period is provided. Specifically, each difference voltage value between an anode and a cathode of the light emitting element is utilized in the case where the light emitting element emits light and emits no light. In a case where the light emitting element emits light, a potential of the gate electrode of the driving transistor is to be held; and in a case where the light emitting element emits no light, a potential that certainly turns off the gate electrode of the driving transistor is kept on applying to the gate electrode of the driving transistor.
Claims16
A display device comprising:
- a first transistor;
- a second transistor;
- a third transistor;
- a fourth transistor,
- a fifth transistor;
- and
- a pixel electrode,
- wherein one of a source and a drain of the first transistor is electrically connected a first line,
- wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor and one of a source and a drain of the third transistor,
- wherein one of a source and a drain of the second transistor is electrically connected to a gate of the third transistor and the pixel electrode,
- 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 fifth transistor,
- wherein the other of the source and the drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor,
- wherein the other of the source and the drain of the fourth transistor is electrically connected to a second line, and
- wherein the other of the source and the drain of the fifth transistor is electrically connected to the second line.
A display device comprising:
- a first transistor;
- a second transistor;
- a third transistor;
- a fourth transistor,
- a fifth transistor;
- and
- a pixel electrode,
- wherein one of a source and a drain of the first transistor is electrically connected a first line,
- wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor and one of a source and a drain of the third transistor,
- wherein one of a source and a drain of the second transistor is electrically connected to a gate of the third transistor and the pixel electrode,
- 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 fifth transistor,
- wherein the other of the source and the drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor,
- wherein the other of the source and the drain of the fourth transistor is electrically connected to a second line, and
- wherein the other of the source and the drain of the fifth transistor is electrically connected to the second line.
- wherein a polarity of the first transistor is different from a polarity of the fourth transistor.
A display device comprising:
- a first transistor;
- a second transistor;
- a third transistor;
- a fourth transistor,
- a fifth transistor;
- and
- a light-emitting element,
- wherein one of a source and a drain of the first transistor is electrically connected a first line,
- wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor and one of a source and a drain of the third transistor,
- wherein one of a source and a drain of the second transistor is electrically connected to a gate of the third transistor and a pixel electrode of the light-emitting element,
- 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 fifth transistor,
- wherein the other of the source and the drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor,
- wherein the other of the source and the drain of the fourth transistor is electrically connected to a second line, and
- wherein the other of the source and the drain of the fifth transistor is electrically connected to the second line.
Dependencies are inferred from the claim text.